Halcyon MINI-SPLITS Error Codes

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FUJITSU Halcyon 410A MINI-SPLITS TROUBLESHOOTING GUIDE and ERROR COdes

 

Error Indication Wired Remote

Controller

 

Error

Diagnosis Method
Operation Timer Economy
 

1 Time

 

1 Time

 

Continuous

 

11

 

Serial communication error

Communication Error – At Start up, evaporator and condenser are not communicating.

-Check wiring from panel to condenser, condenser to evaporator. Wire nuts and splices are not recommended.

Check for correct voltages at panel, condenser and evaporator. Refer to the Service Instruction manual – Serial

Signal Troubleshooting for further details.

 

1 Time

 

2 Times

 

Continuous

 

12

 

Wired remote controller communication error

Wired Remote Controller Communication Error – When the indoor unit cannot receive the signal from the Wired

Remote Control for more than 1 minute during normal operation.

-Check the connection of terminal between remote control and indoor unit and check if there is a disconnection

of the cable.

 

 

1 Time

 

 

8 Times

 

 

Continuous

 

 

18

 

External communication error

External Communication Error – After receiving a signal from the external I/O PCB, the same signal has not been received for 15 seconds.

-Check any loose or removed connections between the controller PCB to the external I/O PCB, open cable or mis-wiring.

-Replace controller PCB.

2 Times 3 Times Continuous 23 Combination error Combination Error – The outdoor unit received a signal that the applied indoor unit is that of a multi type.

-Replace indoor unit with correct matching indoor unit.

 

 

 

2 Times

 

 

 

6 Times

 

 

 

Continuous

 

 

 

26

 

 

Address setting error in wired remote controller system

Address Setting Error in Wired Remote Controller System – When the address number set by auto setting &

manual setting are mixed in on RC group. When the duplicated address number exists in one RC group.

-Check for wrong wiring connection in the RC group. (Refer to Installation Manual)

-Wrong RC group setting; the given address number by auto setting (00) and the manual set number (except

00) were not existing in one RC group, the remote controller address setting by U.I. was not an existing same

address, duplicated address number is not existing in one RC group.

-Check indoor unit controller PCB; check if the controller PCB is damaged.

 

2 Times

 

9 Times

 

Continuous

 

29

 

Connection unit number error

Combination Unit Number Error – When the number of connecting indoor units are out of a specified rule.

-Check wire installation; wrong number of connecting indoor unit.

-Check indoor unit controller PCB; check if controller PCB is damaged, check for error after setting remote

controller address.

 

 

3 Times

 

 

2 Times

 

 

Continuous

 

 

32

 

Indoor unit model informa- tion error

EEPROM access abnormal

EEPROM Error – Electronically erasable and programmable read only memory. It is a non-volatile memory which keeps memorized information even if power is turned off. It can change the contents electronically. To change the contents, it uses higher voltage than normal, and cannot change partial contents. Rewriting shall be done upon erasing all the contents. There is a limit in several rewritings.

-Check if the ground connection is proper.

-Check if there is any equipment that causes harmonic wave near the power cables, i.e. neon light bulb.

3 Times 5 Times Continuous 35 Manual auto switch error Manual Auto Switch Error – When the manual auto switch becomes on for 60 or more consecutive seconds.

-Check if Manual/Auto switch is kept pressed. Check On/Off switching operation by using a meter.

 

Wall Mounted: 30RLXEH, 36RLXB, 9RL2, 9RLS3, 9RLS3H, 9RLS3Y, 12RL2, 12RLS3, 12RLS3H, 12RLS3Y, 15RLS3, 15RLS3H, 15RLS3Y, 18RLB, 24RLB, 30RLXB, 

 

 

 

 

3 Times

 

 

10

Times

 

 

 

Continuous

 

 

 

3A

 

 

Indoor unit communication circuit (WRC) error

Indoor Unit Communication Circuit (WRC) Error – When the indoor unit detects the configuration of the remote

controller group is abnormal or the indoor unit detects lack of primary remote controller.

-Check the connection of the terminal; check the connection of the terminal between the remote controller and

indoor unit, or check between indoor unit if there is a disconnect or short of the cable.

-Check indoor unit controller PCB; check terminal voltage of the controller PCB connector on CNC01 (power

supply for remote) If 12vDC, remote controller failure, replace remote controller. If 0vDC, controller PCB failure,

replace controller PCB.

 

4 Times

 

1 Time

 

Continuous

 

41

 

Indoor room thermistor error

Indoor Room Thermistor Error – Room temperature thermistor detected an abnormal temperature.

-Check thermistor for open or short. Check thermistor resistance value. (Refer to “Thermistor characteristics

table”).

-Controller PCB defective.

 

4 Times

 

2 Times

 

Continuous

 

42

 

Indoor heat ex. (Pipe)

thermistor error

Indoor Heat Ex. (Pipe) Thermistor Error – Evaporator pipe thermistor detected an abnormal temperature.

-Check thermistor for open for open or short. Check thermistor resistance value (Refer to “Thermistor character-

istics table”).

-Controller PCB defective.

 

 

5 Times

 

 

1 Time

 

 

Continuous

 

 

51

 

 

Indoor unit fan motor error

Indoor Unit Fan Motor Error – When the condition that actual frequency of indoor fan is below 1/3 of target frequency is continued more than 56 seconds.

-Check rotation of fan.

-Check ambient temperature around motor.

-Check indoor unit fan motor resistance values.

-Replace controller PCB.

 

5 Times

 

8 Times

 

Continuous

 

58

 

Intake grille error

Intake Grille Error – When the micro switch is detected open while running the compressor.

-Check limit switch.

-Check connector (CN11) / wire.

-Replace controller PCB.

 

6 Times

 

2 Times

 

Continuous

 

62

 

Outdoor unit main PCB error

Outdoor Unit Main PCB Error – Access to EEPROM failed due to some cause after outdoor unit started.

-Reset power supply and operate.

-Check external cause; voltage drop, poor ground connection.

-Replace Main PCB.

 

 

6 Times

 

 

3 Times

 

 

Continuous

 

 

63

 

 

Inverter error

Inverter Error – Error information received from the transistor PCB.

-Check wiring (Power supply to filter PCB to transistor PCB); connector and wiring connection, cable open.

-Replace transistor PCB

-Replace main PCB

-Replace filter PCB

 

 

 

 

 

6 Times

 

 

 

 

4 Times

 

 

 

 

Continuous

 

 

 

 

64

 

 

 

PFC circuit error (9/12RLS3)

Active filter error (15RLS3

15RLS3H, 30RLXEH)

PFC Circuit Error (9/12RLS3) – When inverter output DC voltage is higher than 415V for over 3 seconds, the compressor stops. If the same operation is repeated 5 times, the compressor stops permanently.

-Check external cause at the indoor and outdoor (voltage drop or noise).

-Check connection of connector, loose, erroneous connection.

-Replace Main PCB.

Active Filter Error (15RLS3, 30RLXEH) – When inverter input DC voltage is higher than 425v or lower than 80V.

When a momentary power cut off occurred on low voltage.

-Check external cause at the indoor and outdoor (voltage drop or noise).

-Check connection of connector, loose, erroneous connection.

-Check Active Filter Module resistance values.

-Replace Main PCB.

 

6 Times

 

5 Times

 

Continuous

 

65

 

IPM error

IPM Error – Abnormal current value at the IPM is detected. Heat radiation is blocked (inlet/outlet).

-Check connections of outdoor unit electrical components.

-Check outdoor fan, heat exchanger.

-Check compressor resistance values.

 

 

7 Times

 

 

1 Time

 

 

Continuous

 

 

71

 

 

Discharge thermistor error

Discharge Thermistor Error – When discharge pipe temperature thermistor open or short-circuit is detected at power on or while running the compressor.

-Check connection of connector, loose, erroneous connection.

-Check thermistor for open or short. Check thermistor resistance value (Refer to “Thermistor characteristics

table”).

-Check voltage of Main PCB.

 

 

7 Times

 

 

2 Times

 

 

Continuous

 

 

72

 

 

Compressor thermistor error

Compressor Thermistor Error – When the compressor temperature thermistor is open or short-circuit is detected at power up or while running the compressor.

-Check connection of connector, loose, erroneous connection.

-Check thermistor for open or short. Check thermistor resistance value (Refer to “Thermistor characteristics

table”).

-Check voltage of Main PCB.

 

 

7 Times

 

 

3 Times

 

 

Continuous

 

 

73

Heat Ex. (Pipe) thermistor error

Heat Ex. middle temp. thermistor error /

Heat ex. liquid temp. thermistor error (30RLXEH)

Heat Exchanger (Pipe) Thermistor Error – When heat exchanger temperature thermistor open or short-circuit is detected at power up or while running the compressor.

-Check connection of connector, loose, erroneous connection.

-Check thermistor for open or short. Check thermistor resistance value (Refer to “Thermistor characteristics

table”).

-Check voltage of Main PCB.

 

7 Times

 

4 Times

 

Continuous

 

74

 

Outdoor thermistor error

Outdoor Thermistor Error – When outdoor temperature thermistor is open or a short-circuit is detected at power on or while running the compressor. – Check connection of connector, loose, erroneous connection.

-Check thermistor for open for open or short. Check thermistor resistance value (Refer to “Thermistor character- istics table”).

 

7 Times

 

7 Times

 

Continuous

 

77

 

Heat sink thermistor error

Heat Sink Thermistor Error – Heat sink temperature thermistor (built-in  IPM) is open or shorted.

-Inverter PCB failure

-Replace inverter PCB.

 

 

 

8 Times

 

 

4 Times

 

 

Continuous

 

 

84

 

 

Current sensor error

Current Sensor Error – When input current sensor has detected 0A, while the inverter compressor is operating at higher than 56rps, after 1 minute upon starting the compressor. (Except during defrost operation)

-Check if terminal connection is loose.

-Check if connector is removed.

-Check if erroneous connection.

 

 

8 Times

 

 

6 Times

 

 

Continuous

 

 

86

 

 

Pressure sensor error

Pressure Sensor Error – Detects after 30 seconds or more after power up when the pressure sensor detection value detects the condition below continuously for 30 seconds or more:

•   Ps≤ 37.71 psi (-0.26 Mpa) or Ps ≥ 816.56 psi (5.63 Mpa)

-Check connection of pressure sensor; check if terminal connection is loose, connector is removed, connector

has erroneous connection, cable is open.

-Check voltage of main PCB.

 

 

9 Times

 

 

4 Times

 

 

Continuous

 

 

94

 

 

Over current error

Over Current Error – Protection stop by overcurrent generation after inverter compressor start processing com- pleted generated consecutively 10 times. The number of generations is reset if the start-up of the compressor succeeds.

-Clogged heat exchanger.

-Condenser fan motor defective.

-Discharged air not sucked in.

 

 

9 Times

 

 

5 Times

 

 

Continuous

 

 

95

 

 

Compressor control error

Compressor Motor Control Error – If the detected rotor location is out of phase with actual rotor location more than 90 degrees, the compressor stops. After the compressor restarts, if the same operation is repeated within

40 seconds, the compressor stops again.

-Check if connector is removed.

-Check erroneous connection.

-Check if cable is open.

 

 

 

9 Times

 

 

 

7 Times

 

 

 

Continuous

 

 

 

97

 

 

Outdoor unit fan motor error

Outdoor Unit Fan Motor Error – When outdoor fan motor rotation speed is less than 100 RPMs in 20 seconds after fan motor starts, fan motor stops. After fan motor restarts, if the same operation within 60 seconds is repeated 3 times in a row, compressor and fan motor stops.

-Check rotation of fan, locked motor, or resistance for motor to rotate.

-Check ambient temperature around motor, excessive high temperature around motor or surrounding equip-

ment that causes heat.

-Ohm fan motor windings, check for DC voltage to motor.

 

 

 

9 Times

 

 

 

8 Times

 

 

 

Continuous

 

 

 

98

 

 

 

Outdoor unit fan motor 2 error

Outdoor Unit Fan Motor 2 Error – When the outdoor fan rotation speed is less than 100 RPMs in 20 seconds after the fan motor starts, the fan will stop. After motor restarts, if same operation within 60 seconds is repeated 3 times in a row, compressor and fan stop. If above repeats 5 times in a row, compressor and fan stop permanently.

-Check rotation of fan, locked motor, or resistance for motor to rotate.

-Check ambient temperature around motor, excessive high temperature around motor or surrounding equip-

ment that causes heat.

-Ohm fan motor windings, check for DC voltage to motor.

 

 

 

 

9 Times

 

 

 

9 Times

 

 

 

Continuous

 

 

 

99

 

 

 

4-Way valve error

4-Way Valve Error – When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops:

•   Cooling or Dry operation [Indoor heat exchanger temp.] – [Room temp.] > 20°F (10°C)

•   Heating operation [Indoor heat exchanger temp.] – [Room temp.] < -20°F (-10°C)

-Check connection of molex plug.

-Check each thermistor.

-Check the solenoid coil and 4-way valve.

-Check AC voltage of 4-way valve.

 

 

 

10 Times

 

 

 

1 Time

 

 

 

Continuous

 

 

 

A1

 

 

 

Discharge temperature error

Discharge Temperature Error – Protection stop by discharge temperature ≥230°F (110°C) during compressor

operation generated 2 times within 24 hours.

-Check if 3-way valve is open.

-Check EEV, strainer.

-Check outdoor unit fan, heat exchanger.

-Check discharge thermistor.

-Check refrigerant amount, leak check.

 

 

 

10 Times

 

 

 

3 Times

 

 

 

Continuous

 

 

 

A3

 

 

Compressor temperature error

Compressor Temperature Thermistor Error – Protection stop by compressor temperature ≥226°F (107.8°C) during

compressor operation generated 2 times within 24 hours.

-Check if 3-way valve is open.

-Check EEV, strainer.

-Check outdoor unit fan, heat exchanger.

-Check compressor thermistor, loose connection.

-Check refrigerant amount, leak check.

 

 

 

10 Times

 

 

 

5 Times

 

 

 

Continuous

 

 

 

A5

 

 

 

Low pressure error

Low Pressure Error – Protection stop by suction pressure < 0.02MPaG continued for 5 minutes, repeats 5 times within 2 hours.

-Check if 3-way valve is open.

-Check EEV, strainer.

-Check outdoor unit fan, heat exchanger.

-Check discharge thermistor.

-Check refrigerant amount, leak check.

 

Wall Mounted: 24RLQ, *24RLXS, 9CQ, 9RQ, 9R2, 9RLQ, 12R2, 12RLQ, *12RL, *12RLS, 15RLQ, 18CL, 18RL, *9RL, *9RLS, 12CQ, 12RQ, 18RLQ, 24CL, 24CL1, 18RLXQ, *18RLXS, 

Error Codes  

Error

 

Diagnosis Method

Operation Timer Wired Remote
 

 

 

 

 

 

Off

 

2 Times

 

1

Serial reverse transfer error at startup operation Communication error – At startup, evaporator and condenser are not communicating.

-Check wiring from panel to condenser, condenser to evaporator. Wire nuts and splices are not recommended. Check for correct

voltage at panel, condenser and evaporator. Refer to the Service Instructions manual- Serial Signal Troubleshooting for further details.

 

3 Times

 

1

Serial reverse transfer error during operation Communication error – During operation, evaporator and condenser did not communicate for 10 consecutive seconds.

-Check wiring from panel to condenser, condenser to evaporator. Check for correct voltage at panel, condenser and evaporator. Refer

to the Service Instructions manual – Serial Signal Troubleshooting for further details.

 

4 Times

 

13

Serial forward transfer error at startup operation Communication error – At the startup, evaporator and condenser are not communicating.

-Reset power. If error code reappears check wiring from panel to condenser, condenser to evaporator. Check for correct voltage at

panel, condenser and evaporator. Refer to the Service Instructions manual – Serial Signal Troubleshooting for further details.

 

5 Times

 

13

Serial forward transfer error during operation Communication error – During operation, evaporator and condenser did not communicate for 10 consecutive seconds.

-Reset power. If error reappears check wiring from panel to condenser, condenser to evaporator. Check for correct voltage at panel,

condenser and evaporator. Refer to the Service Instructions manual – Serial Signal Troubleshooting for further details.

 

8 Times

 

0

Wire remote controller error Communication error- evaporator and wire remote controller are not communicating.

-Check wiring between evaporator and wire remote controller.

-Check for DC 12V at evaporator connector. If voltage present replace wire remote control.

 

2 Times

2 Times 2 Room temperature thermistor error  

 

 

 

Abnormal temperature detected

-Check thermistor for open or short.

-Controller PCB defective.

3 Times 4 Indoor heat exchanger thermistor error
 

 

 

3 Times

2 Times 0C Discharge thermistor error
3 Times 6 Outdoor heat exchanger thermistor error
4 Times 0A Outdoor temperature thermistor error
8 Times 15 Compressor temperature thermistor error
 

 

 

 

4 Times

2 Times No display Forced auto switch error Forced auto switch open (pushed in) for 30 consecutive seconds or more.

-Check if forced auto switch is stuck in pushed-in position. -Controller PCB defective.

3 Times No display Main relay error After 2 minutes 20 seconds of stopped operation, the signal from the outdoor unit is received even though the main relay is off.

-Check if Main Relay is defective. -Controller PCB defective.

4 Times No display Power supple frequency error The power supply frequency cannot be recognized after 4 seconds of power on. Permanent stop.

-Controller PCB defective.

7 Times No display VDD permanent STOP

protection (electric air cleaner)

Electric air cleaner error – When the air cleanness monitor trial protection operates 4 times.

-Check the front panel and ensure that it is closed. -Check IAQ micro switch for open/close operation.

8 Times 21 Reverse VDD (electric air clean power supply circuit abnormal) IAQ error code – The air clean operation signal was detected for 1 minute at the time of air clean mode was off.

-Electric air cleaner defective.  -Controller PCB defective

 

*30RLX, 30CLX, 30CLX1, 30RLXQ, 36CLX, 36CLX1          *Operation & Timer LEDs colors are reversed.

 

 

 

 

 

 

5 Times

 

2 Times

 

17

 

IPM protection

Abnormal current value at the IPM is detected. Heat radiation is blocked (inlet/outlet).

-Check If outdoor fan is defective (does not rotate).

-IPM/Controller PCB defective. Check refrigeration cycle for under/over charge conditions.

3 Times 18 CT error Current transfer error – The current value during the operation after 1 minute from starting up the compressor drops to zero (0) amps.

-Check if CT wire is open. See Service Manual for schematic on each model. -Controller PCB defective.

 

5 Times

 

1A

 

Compressor location error

Compressor detection – The compressor speed does not synchronize with the control signal. (Including  start up failure of the compressor.)

-Check if 2-way valve or 3-way valve are open. Check the compressor (Winding resistance value, loose leak wire).

-Check refrigeration cycle condition.

 

6 Times

 

1B

 

Outdoor fan error

(DC motor)

Condenser fan motor error – Abnormal current or fan motor lock error was detected.

-Check fan motor connector loose/defective contact. Rotate fan motor by hand to ensure it is not locked. Check DC 150-380V on fan

motor between red & black wire. Check DC 15V between black & white wire. Voltage not present.

-Controller PCB defective.

7 Times 1F Model match error connected indoor unit error Apparent model information error from EPROM (miss match). 3 continuous failure of lead test of EPROM at power on, voltage drop or noise, etc. -Controller PCB defective.
 

 

6 Times

 

2 Times

 

No display

 

Indoor fan lock error

Evaporator fan motor error – The indoor fan speed is 0 RPM after 56 seconds from starting operation.

-Check if fan motor connector is loose/defective contact. Rotate fan motor by hand to ensure it is not locked.

-Controller PCB defective.

 

3 Times

 

No display

 

Indoor fan speed error

Evaporator fan motor error – The indoor fan speed is 1/3 of the target frequency after 56 seconds from starting operation.

-Check if fan motor connector is loose/defective contact. Rotate fan motor by hand to ensure it is not locked.

-Controller PCB defective.

 

 

 

 

7 Times

 

2 Times

 

0F

Discharge temperature error The discharge temperature error is activated. Heat radiation is blocked.

-Check for closed 2-way valve or 3-way valves. Check for leaks at line set, condenser and/or evaporator.

-Refrigeration cycle defective. Check for restrictions at line set, low charge.

 

3 Times

 

24

Excessive high pressure protection on cooling Excessive high pressure protection on cooling mode has been activated. Heat radiation is blocked.

-Check for closed 3-way valves. Check for running compressor with outdoor fan off.

-Check outdoor fan is defective. Refrigeration cycle defective. Check for high pressure, over charged.

 

5 Times

 

16

 

Pressure switch error

If the pressure switch is open for 10 seconds when the power is turned on. – Error will reset when pressure becomes normal.

-Check interruption of heat radiation (air intake/outlet). Check outdoor fan operation (does not rotate).

-Check refrigerant cycle. Check for high pressure, over charged.

 

7 Times

 

6 Times

 

2b

Compressor temperature error When the compressor becomes hotter than 226.4°F (108°C), unit stops.

-Check for closed 2/3 way valves, EEV failure, low charge, compressor thermistor failure, outdoor fan failure or outdoor heat exchanger

clogged.

 

 

8 Times

2 Times 19 Active filter error

(permanent stop)

Outdoor voltage error of Active Filter is detected.

-Check the wiring connection (connector is loose/open. Choke coil) -Active Filter Module/Controller PCB defective.

3 Times 19 Active filter error Output voltage error of Active Filter is detected.

-Check the wiring connection (connector is loose/open. Choke coil) -Active Filter Module/Controller PCB defective.

4 Times 25 PFC circuit error Excessive voltage of DC V on PFC circuit in inverter PCB is detected. -Controller PCB is defective.
All LED’s blink Operation, Timer, Air Clean On/Off  

11

 

Model match error

Apparent model information error from EPROM (miss match). 3 continuous failure of lead test of EPROM at power on, voltage drop or noise, etc. -Controller PCB defective.

 

Error Indication Wired Remote Controller  

Error

 

Diagnosis Method

Operation Timer Economy
 

1 Time

 

1 Time

 

Continuous

 

11

 

Serial communication error

Communication Error – At Start Up, evaporator and condenser are not communicating.

-Check wiring from panel to condenser, condenser to evaporator. Wire nuts and splices are not recommended.

Check for correct voltages at panel, condenser and evaporator. Refer to the Service Instruction manual – Serial

Signal troubleshooting for further details.

 

1 Time

 

2 Times

 

Continuous

 

12

 

Wired remote controller communication error

Wired Remote Controller Communication Error – When the indoor unit cannot receive the signal from the

Wired Remote Control for more than 1 minute during normal operation.

-Check the connection of terminal between remote control and indoor unit and check if there is a

disconnection of the cable.

 

 

1 Time

 

 

5 Times

 

 

Continuous

 

 

15

 

 

Check run unfinished

Check-Run Unfinished – When the operation command is inputted by the remote controller without check

operation completion.

-Check indoor unit number connection.

-Power down all indoors units with remote controller, reset disconnect and branch box power for 5 minutes,

reinitiate check-run operation.

 

2 Times

 

1 Time

 

Continuous

 

21

 

Number of wires and pipes error

Number of Wires and Pipes Error – When the operation command is inputted by the remote controller without check operation completion.

-Check indoor unit connection. -Check for crossed wiring or piping.

 

2 Times

 

2 Times

 

Continuous

 

22

 

Indoor unit capacity error

Indoor Unit Capacity Error – The total capacity of the indoor units has been exceeded or is under the minimum acceptable range.

-Check total capacity of the connected indoor units. -Check all field wiring to ensure no breaks.

 

2 Times

 

3 Times

 

Continuous

 

23

 

Connected combination error

Connected Combination Error – When power is on and one of the below occurs:

•   When the wiring is incorrect.

•   When the connection of an unsupported multi-zone condenser is installed.

 

 

2 Times

 

 

4 Times

 

 

Continuous

 

 

24

 

Number of indoor units’ error / Number of branch boxes error

Number of Indoor Units Error / Number of Branch Boxes Error – When the total connection number of indoor units is outside of range between 2 and 8. / When the number of branch boxes 1 and 2 are different and the operation command is input to the outdoor unit.

-Check indoor unit number connection for overcapacity.

-Check power to the branch boxes.

 

 

3 Times

 

 

2 Times

 

 

Continuous

 

 

32

 

Indoor unit model information error

EEPROM access abnormal

EEPROM Error – Electronically Erasable and Programmable Read Only Memory. It is a non-volatile memory which keeps memorized information even if power is turned off. It can change the contents electronically. To change the contents, it uses higher voltage than normal and cannot change partial contents. Rewriting shall be done upon erasing all the contents. There is a limit in several rewritings.

-Check if the ground connection is proper. Check if there is any equipment that causes harmonic wave near the power cables, i.e. neon light bulb.

3 Times 5 Times Continuous 35 Manual auto switch error Manual Auto Switch Error – When the Manual Auto Switch becomes on for 60 or more consecutive seconds.

-Check if Manual Auto switch is kept pressed. Check On/Off switching operation by using a meter.

 

Multi-Zones: ASU7RLF1, ASU9RLF1, ASU12RLF1, ASU18RLF, ASU15RLS, ASU15RLS2, ASU15RLF1, ASU24RLF, ARU7RLF, ARU9RLF, ARU12RLF, ARU18RLF, ARU24RLF, AUU7RLF, AUU9RLF, AUU12RLF, AUU18RLF, AGU9RLF, AGU12RLF, AGU15RLF

 

 

4 Times

 

1 Time

 

Continuous

 

41

 

Indoor room thermistor error

Indoor Room Thermistor Error – Room temperature thermistor detected an abnormal temperature.

-Check thermistor for open or short. Check thermistor resistance value. (Refer to “Thermistor characteristics

table”).

-Controller PCB defective.

 

4 Times

 

2 Times

 

Continuous

 

42

 

Indoor heat ex. (Pipe) thermistor error

Indoor Heat Ex. (Pipe) Thermistor Error – Evaporator pipe thermistor detected an abnormal temperature.

-Check thermistor for open for open or short. Check thermistor resistance value (Refer to “Thermistor

characteristics table”).

-Controller PCB defective.

 

 

5 Times

 

 

1 Time

 

 

Continuous

 

 

51

 

 

Indoor unit fan motor error

Indoor Unit Fan Motor Error – When the condition that actual frequency of indoor fan is below 1/3 of target frequency is continued more than 56 seconds.

-Check rotation of fan.

-Check ambient temperature around motor.

-Check indoor unit fan motor resistance values.

-Replace controller PCB.

 

 

5 Times

 

 

3 Times

 

 

Continuous

 

 

53

 

 

Drain pump error

Drain Pump Error – When the float switch is on for more than 3 minutes, error will trigger.

-Check operation of float switch, blockages, dust, etc.

-Remove float and check on/off switching operation by using a meter.

-Check connector of (CN9) / wire.

-Check drain hose for blockages.

 

 

5 Times

 

 

7 Times

 

 

Continuous

 

 

57

 

 

Damper error

Damper Error – When limit switch was not able to detect the closing though the damper is closed. (Upper air

flow)

-Check operation of limit switch.

-Check for loose connection of CN18 / shorted or pinched wire.

-Check damper for obstructions of damper movement.

-Check damper movement.

 

5 Times

 

8 Times

 

Continuous

 

58

 

Intake grille error

Intake Grille Error – When the micro switch is detected open while running the compressor.

-Check limit switch.

-Check connector (CN11) / wire.

-Replace controller PCB.

 

6 Times

 

2 Times

 

Continuous

 

62

 

Outdoor unit main PCB error

Outdoor Unit Main PCB Error – Access to EEPROM failed due to some cause after outdoor unit started.

-Reset power supply and operate.

-Check external cause; voltage drop, poor ground connection.

-Replace Main PCB.

 

6 Times

 

3 Times

 

Continuous

 

63

 

Inverter error

Inverter Error – Error information received from the inverter PCB.

-Reset power to disconnect

-Check connection of molex plugs on inverter PCB for loose connections.

 

 

 

 

6 Times

 

 

 

4 Times

 

 

 

Continuous

 

 

 

64

 

 

 

PFC circuit error (9/12RLS3) /

Active filter error (15RLS3,

30RLXEH)

PFC Circuit Error (9/12RLS3) – When inverter output DC voltage is higher than 415V for over 3 seconds, the compressor stops. If the same operation is repeated 5 times, the compressor stops permanently.

-Check external cause at the indoor and outdoor (voltage drop or noise).

-Check connection of connector, loose, erroneous connection.

-Replace Main PCB.

Active Filter Error (15RLS3, 30RLXEH) – When inverter input DC voltage is higher than 425v or lower than 80V.

When a momentary power cut off occurred on low voltage.

-Check external cause at the indoor and outdoor (voltage drop or noise).

-Check connection of connector, loose, or erroneous connection. Check Active Filter Module resistance values.

 

6 Times

 

5 Times

 

Continuous

 

65

 

IPM error

IPM Error – Abnormal current value at the IPM is detected. Heat radiation is blocked (inlet/outlet).

-Check connections of outdoor unit electrical components.

-Check outdoor fan, heat exchanger. -Check compressor resistance values.

6 Times 10

Times

Continuous 6A Display PCB communication error Display P.C.B. Error – Communication not received from I/O PCB for more than 10 seconds.

-Check molex plug connection for loose or erroneous connection.

 

 

7 Times

 

 

1 Time

 

 

Continuous

 

 

71

 

 

Discharge thermistor error

Discharge Thermistor Error – When discharge pipe temperature thermistor open or short-circuit is detected at power up or while running the compressor.

-Check connection of connector, loose, erroneous connection.

-Check thermistor for open for open or short. Check thermistor resistance value (Refer to “Thermistor

characteristics table”). -Check voltage of Main PCB.

 

7 Times

 

2 Times

 

Continuous

 

72

 

Compressor thermistor error

Compressor Thermistor Error – Compressor temperature thermistor is open or short-circuited while power is on or running the compressor.

-Check for erroneous connection or removed connector.

-Check resistance on thermistor. -Check voltage to thermistor.

 

 

7 Times

 

 

3 Times

 

 

Continuous

 

 

73

 

 

Heat Ex. (Pipe) thermistor error

Heat Exchanger (Pipe) Thermistor Error – When heat exchanger temperature thermistor open or short-circuit is detected at power on or while running the compressor.

-Check connection of connector, loose, or erroneous connection.

-Check thermistor for open or short. Check thermistor resistance value (Refer to “Thermistor characteristics

table”). -Check voltage of Main PCB.

 

 

7 Times

 

 

4 Times

 

 

Continuous

 

 

74

 

 

Outdoor thermistor error

Outdoor Thermistor Error – When outdoor temperature thermistor is open or a short-circuit is detected at power on or while running the compressor.

-Check connection of connector, loose, erroneous connection.

-Check thermistor for open or short. Check thermistor resistance value (Refer to “Thermistor characteristics

table”).

 

7 Times

 

5 Times

 

Continuous

 

75

 

Suction gas thermistor error

Suction Gas Thermistor Error – Suction gas temperature thermistor has shorted or open detected.

-Check the connection of the molex plug, loose or erroneous connection.

-Check ohm resistance readings of thermistor. -Check voltage of Main PCB.

 

7 Times

 

6 Times

 

Continuous

 

76

 

2-Way valve thermistor error

2-Way Valve Thermistor Error – When 2-way valve temperature thermistor is open or short-circuited while power is on or while running the compressor.

-Check for erroneous connection or removed connector.

-Check resistance of thermistor. -Check voltage to thermistor.

 

 

 

7 Times

 

 

6 Times

 

 

Continuous

 

 

76

 

 

3-Way valve thermistor error

3-Way Valve Thermistor Error – When 2-way valve temperature thermistor is open or short-circuited while power is on or while running the compressor.

-Check for erroneous connection or removed connector.

-Check resistance of thermistor.

-Check voltage to thermistor.

 

 

7 Times

 

 

7 Times

 

 

Continuous

 

 

77

 

 

Heat sink thermistor error

Heat Sink Thermistor Error – When heat-sink temperature thermistor is open or a short-circuit is detected at power up or while running the compressor.

-Check for erroneous connection or removed connector.

-Check resistance of thermistor.

-Check voltage to thermistor.

 

 

8 Times

 

 

2 Times

 

 

Continuous

 

 

82

 

Sub-cool heat ex. gas inlet thermistor error / Sub cool heat ex. gas outlet thermistor error

Sub-Cool Heat Ex. Gas Inlet Thermistor Error / Sub Cool Heat Ex. Gas Outlet Thermistor Error – Sub cooling heat exchanger gas inlet temperature thermistor short or open detected.

-Check for erroneous connection or removed connector.

-Check resistance of thermistor.

-Check voltage to thermistor.

 

8 Times

 

3 Times

 

Continuous

 

83

 

Liquid pipe thermistor

Liquid Pipe Thermistor Error – Heat exchanger liquid pipe thermistor short or open detected. Check for erroneous connection or removed connector.

-Check resistance of thermistor.

-Check voltage to thermistor.

 

 

8 Times

 

 

4 Times

 

 

Continuous

 

 

84

 

 

Current sensor error

Current Sensor Error – When input current sensor has detected 0A, while the inverter compressor is operating at higher than 56rps, after 1 minute upon starting the compressor. (Except during defrost operation)

-Check if terminal connection is loose.

-Check if connector is removed.

-Check if erroneous connection.

 

 

8 Times

 

 

6 Times

 

 

Continuous

 

 

86

 

 

High pressure switch error

High Pressure Switch Error – When the pressure switch is detected open for longer than 10 seconds after the power is turned on.

-Reset power to disconnect for 3-5 minutes.

-Check voltage to pressure switch.

-Check ohm resistance to high pressure switch.

 

 

9 Times

 

 

4 Times

 

 

Continuous

 

 

94

 

 

Over current error

Trip Detection – Protection stop by overcurrent generation after inverter compressor start processing completed generated consecutively 10 times. The number of generations is reset if the compressor is able to start up.

-Clogged heat exchanger.

-Condenser fan motor defective.

-Discharged air not sucked in.

 

 

9 Times

 

 

5 Times

 

 

Continuous

 

 

95

 

 

Compressor control error

Compressor Motor Control Error – If the detected rotor location is out of phase with actual rotor location more than 90 degrees, the compressor stops. After the compressor restarts, if the same operation is repeated within

40 seconds, the compressor stops again.

-Check if connector is removed.

-Check erroneous connection.

-Check if cable is open.

 

 

 

 

9 Times

 

 

 

7 Times

 

 

 

Continuous

 

 

 

97

 

 

 

Outdoor unit fan motor error

Outdoor Unit Fan Motor Error – When outdoor fan motor rotation speed is less than 100 RPMs in 20 seconds after fan motor starts, fan motor stops. After fan motor restarts, if the same operation within 60 seconds is repeated 3 times in a row, compressor and fan motor stops.

-Check rotation of fan, locked motor, or resistance for motor to rotate.

-Check ambient temperature around motor, excessive high temperature around motor or surrounding

equipment that causes heat.

-Ohm fan motor windings, check for DC voltage to motor.

 

 

 

9 Times

 

 

 

9 Times

 

 

 

Continuous

 

 

 

99

 

 

 

4-Way valve error

4-Way Valve Error – When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops:

•   Cooling or Dry operation [Indoor heat exchanger temp.] – [Room temp.] > 20°F (10°C)

•   Heating operation [Indoor heat exchanger temp.] – [Room temp.] < -20°F (-10°C)

-Check connection of molex plug.

-Check each thermistor.

-Check the solenoid coil and 4-way valve.

-Check AC voltage of 4-way valve.

 

 

 

10 Times

 

 

 

1 Time

 

 

 

Continuous

 

 

 

A1

 

 

 

Discharge temperature error

Discharge Temperature Error – Protection stop by discharge temperature ≥230°F (110°C) during compressor

operation generated 2 times within 24 hours.

-Check if 3-way valve is open.

-Check EEV, strainer.

-Check outdoor unit fan, heat exchanger.

-Check discharge thermistor.

-Check refrigerant amount, leak check.

 

 

10 Times

 

 

3 Times

 

 

Continuous

 

 

A3

 

 

Compressor temperature error

Compressor Temperature Thermistor Error – Protection stop by compressor temperature ≥226°F (107.8°C)

during compressor operation generated 2 times within 24 hours.

-Check if 3-way valve is open.

-Check EEV, strainer.

-Check outdoor unit fan, heat exchanger.

-Check compressor thermistor, loose connection.

 

 

 

10 Times

 

 

 

5 Times

 

 

 

Continuous

 

 

 

A5

 

 

 

Low pressure error

Low Pressure Error – Protection stop by suction pressure ≤7.35 PSI continued for 5 minutes, repeats 5 times

within 2 hours.

-Check if 3-way valve (gas side) is open.

-Clogged strainer.

-Check ohm resistance value of EEV coil.

-Check suction pressure sensor.

-Check refrigerant amount.

 

13 Times

 

2 Times

 

Continuous

 

J2

 

Branch box error

Branch Box Error – When the branch box stops communicating with connected indoor units.

-Reset power supply and operate.

-Check molex plugs for loose or erroneous connections.

-Check for defective or crossed field wiring.

 

Multi-Zones: ASU9RMLQ, ASU12RMLQ, ASU18RMLQ, ARU9RML*, ARU12RML*, ARU18RML*, AUU9RML, AUU12RML, AUU18RML                       *Refer to the wired remote controller

 

Error Contents Indoor Error Display
Operation Timer Air Clean Coil Dry Wired Remote Code No.
 

 

Communication Error

Serial reverse transfer error at Start Up Off 2 flashes Off Off 01
Serial reverse transfer error during operation Off 3 flashes Off Off 00
Forward transfer signal error at start up Off 4 flashes Off Off 13
Indoor Unit ←Remote Control ←Wired Remote Control Off 8 flashes Off Off 00
 

Indoor Unit Temperature Error

Room temperature thermistor error 2 flashes 2 flashes Off Off 02 or 03
Heat exchanger temperature thermistor error 2 flashes 3 flashes Off Off 04 or 05
Indoor Unit Water Drain Abnormal Float switch tripped / pump problem 2 flashes 6 flashes Off Off 09
 

 

 

Outdoor Unit Temperature Error

Discharge pipe temperature thermistor error 3 flashes 2 flashes Off Off 0C or 0d
Outdoor heat exchanger temp. thermistor error 3 flashes 3 flashes Off Off 06 or 07
Outdoor temperature thermistor error 3 flashes 4 flashes Off Off 0A or 0b
2-way valve temperature thermistor error 3 flashes Off 2 flashes Off 1d
3-way valve temperature thermistor error 3 flashes Off 3 flashes Off 1E
Heat sink temperature thermistor error 3 flashes 7 flashes Off Off 0E
Compressor temperature thermistor error 3 flashes 8 flashes Off Off 15
 

 

Indoor Unit Control System Error

Manual Auto button error 4 flashes 2 flashes Off Off 20
Power supply 50 HZ / 60 HZ detection error 4 flashes 4 flashes Off Off 08
Electronic air clean filter error 4 flashes 7 flashes Off Off 21
Electronic air cleaner power PCB circuit error 4 flashes 8 flashes Off Off 22
 

 

 

Outdoor Unit Control System Error

IPM error 5 flashes 2 flashes Off Off 17
CT error 5 flashes 3 flashes Off Off 18
Compressor position error 5 flashes 5 flashes Off Off 1A
Outdoor fan motor error 5 flashes 6 flashes Off Off 1b
Connected indoor unit error 5 flashes 7 flashes Off Off 1F
Main CPU-sub CPU communication error 5 flashes 8 flashes Off Off 1C
 

Indoor Unit Fan Motor Error

Indoor fan motor lock error 6 flashes 2 flashes Off Off 12
Indoor fan motor speed error 6 flashes 3 flashes Off Off 12
 

Refrigerant System Error

Discharge pipe thermistor error 7 flashes 2 flashes Off Off 0F
Cooling high pressure abnormal rise 7 flashes 3 flashes Off Off 14
High pressure switch error 7 flashes 6 flashes Off Off 16
 

Added Function Error

Active filter module (AFM) error (Second time) 8 flashes 2 flashes Off Off 19
Active filter module (AFM) error (First time) 8 flashes 3 flashes
PFC circuit error 8 flashes 4 flashes
Indoor Unit Connect Error Indoor unit error (indoor EEPROM abnormal) Blinking Blinking Blinking Blinking 11

 

Multi-Zone Outdoor Units

AOU18RLXFZ, AOU18RLXFZH, AOU24RLXFZ, AOU24RLXFZH, AOU36RLXFZ, AOU36RLXFZ1, AOU24RML, AOU24RML1, AOU36RML, AOU36RML1

 

Error Contents LED
1 2 3 4
 

 

Outdoor communication signal error (forward transfer)

1 flash Off Off Off
Off 1 flash Off Off
Off Off 1 flash Off
Off Off Off 1 flash
Outdoor discharge pipe thermistor error 2 flashes Off Off Off
Heat Ex. thermistor error 3 flashes Off Off Off
Outdoor temperature error 4 flashes Off Off Off
2-way valve thermistor error (for indoor unit A) 5 flashes Off Off Off
2-way valve thermistor error (for indoor unit B) Off 5 flashes Off Off
2-way valve thermistor error (for indoor unit C) Off Off 5 flashes Off
3-way valve thermistor error (for indoor unit A) 6 flashes Off Off Off
3-way valve thermistor error (for indoor unit B) Off 6 flashes Off Off
3-way valve thermistor error (for indoor unit C) Off Off 6 flashes Off
3-way valve thermistor error (for indoor unit D) Off Off Off 6 flashes
Compressor thermistor error 7 flashes Off Off Off
Heat sink thermistor error 8 flashes Off Off Off
High pressure switch 1 error 9 flashes Off Off Off
High pressure switch 2 error 10 flashes Off Off Off
Indoor unit capacity error 11 flashes Off Off Off
Over current error 12 flashes Off Off Off
Compressor control error 13 flashes Off Off Off
IPM error 14 flashes Off Off Off
Outdoor unit fan motor error 15 flashes Off Off Off
Heat Ex. MID thermistor error 16 flashes Off Off Off
Outdoor unit PCB microcomputer communication error 17 flashes Off Off Off
Discharge temp. error 18 flashes Off Off Off
Compressor temp. error 19 flashes Off Off Off
4-way valve error 20 flashes Off Off Off
Outdoor unit PCB model information error 21 flashes Off Off Off
Active filter error 22 flashes Off Off Off

 

 

Error Contents

Outdoor Unit LED Display
A B C D E F
Serial communication error 1 1
Serial communication error during operation 1 1
Communication error between controller and outdoor unit 1 6
Indoor unit capacity error 2 2
Indoor unit error 5 15
PCB model information error 6 2
EEPROM access error 6 2
EEPROM data corruption error 6 2
Inverter error 6 3
IPM error (trip terminal L error) 6 5
Discharge temp. sensor error 7 1
Compressor temp. sensor error 7 2
Heat Ex. liquid sensor error 7 3
Outdoor temp. sensor error 7 4
Valve sensor error 7 6
Valve sensor error 7 6
Current sensor 1 error (stoppage permanently) 8 4
Discharge pressure sensor error 8 6
Trip detection 9 4
Compressor motor control error 9 5
Fan motor 1 error (duty error) 9 7
4-way valve error 9 9
Coil 1 (expansion  valve 1) error 9 10
Discharge temperature 1 error (stoppage permanently) 10 1
Compressor 1 temperature error 10 3
: Flashing : No indication

 

Multi-Zone Outdoor Units : AOU36RLXFZH, AOU45RLXFZ

 

Single-Zone Outdoor Unit

 

Error Contents

LED Display
Power Mode Error Pump Down Low Noise Peak Cut
(L1) (L2) (L3) (L4) (L5) (L6)
◊2 ◊1 ◊1
Serial communication error ◊2 ◊1 ◊1
Indoor unit error ◊2 ◊5 ◊15
Outdoor unit main PCB model information error ◊2  

 

◊6 ◊2  

 

 

 

 

 

 

 

Inverter error ◊2 ◊6 ◊3
IPM error ◊2 ◊6 ◊5
Discharge thermistor error ◊2 ◊7 ◊1
Compressor thermistor error ◊2 ◊7 ◊2
Heat Ex. middle temp. sensor error ◊2 ◊7 ◊3
Heat Ex. liquid temp. sensor error ◊2 ◊7 ◊3
Outdoor thermistor error ◊2 ◊7 ◊4
Heat sink temp. sensor error ◊2 ◊7 ◊7
Current sensor error ◊2 ◊8 ◊4
Pressure sensor error ◊2 ◊8 ◊6
Trip detection error ◊2 ◊9 ◊4
Compressor control error ◊2 ◊9 ◊5
Outdoor unit fan motor 1 error ◊2 ◊9 ◊7
Outdoor unit fan motor 2 error ◊2 ◊9 ◊8
4-way valve error ◊2 ◊9 ◊9
Discharge temp. error ◊2 ◊10 ◊1
Compressor temp. error ◊2 ◊10 ◊3
Low pressure error ◊2 ◊10 ◊5
: Light OFF : Light ON ◊2: 2 Times Blinking  ◊1 ~ ◊15: 1 ~ 15 Times Blinking  : Light ON

 

AOU30RLXEH

 

 

When an error occurs, an error description displays in the LED (No. 401 – 405).
Lit
 (n) Flashing (number of flashing)
Unlit

Normal Status

 

Green Red Comment
LED 401 LED 402 LED 403 LED 404 LED 405
This box is functioning properly.

 

Error Status
Green Red Error Description
LED 401 LED 402 LED 403 LED 404 LED 405
Connected combination error
 

Power frequency error

 

Branch Box identifying display

 

 

Primary unit:

(1)

 

 

Secondary unit

1:  (2)

 

 

Secondary unit2:

(3)

 (1) EEPROM
 (2) Model information error
 (3)  

 

 

 

 

 

Serial communication error between outdoor unit and branch box

Serial communication error between branch boxes

 (4) Serial communication error between branch boxes
 

(5)

Serial communication error between indoor unit A and branch box
Serial communication error between indoor unit B and branch box
Serial communication error between indoor unit C and branch box
 

(6)

Indoor Unit A, liquid pipe thermistor error (CN309)
Indoor Unit B, liquid pipe thermistor error (CN309)
Indoor Unit C, liquid pipe thermistor error (CN310)
 

(7)

Indoor Unit A, gas pipe thermistor error (CN309)
Indoor Unit B, gas pipe thermistor error (CN309)
Indoor Unit C, gas pipe thermistor error (CN310)
 

(8)

Indoor Unit A, EEV control error (CN305)
Indoor Unit B, EEV control error (CN306)
Indoor Unit C, EEV control error (CN307)
 (9) Remote controller communication error

 

Halcyon HFI Flex Outdoor Unit

AOU48RLXFZ, AOU48RLXFZ1

 

 

  • When error occurs, “Err” and “Number of error occurred” are alternately displayed in 7 seg. Display.
  • The latest error code can be confirmed by pressing the ENTER button.
  • When error codes are displayed, all the error codes can be confirmed by pressing the SELECT button.

 

Example: When “Discharge thermistor error” and “Compressor thermistor error” have occurred.

 

 

 

SELECT      Press the “SELECT” button. ENTER           Press the “ENTER” button.

 

 

E r r
E 7 2 1

 

ENTER                                                                        SELECT

 

E 7 1 1

 

2

 

CODE DESCRIPTION CODE DESCRIPTION
E113  

Serial communication error

E751 Suction gas thermistor error
E114 E771 Heat sink thermistor error
E156 Check-run unfinished E821 Sub-cool heat EX. gas inlet thermistor error
E212 Number of wires and pipe error E882 Sub-cool heat EX. gas outlet thermistor error
E221 Indoor unit capacity error E831 Liquid pipe thermistor error
E242 Number of indoor units error E841 Current sensor error
E243 Number of Branch boxes error E861 Discharge pressure sensor error
E5U1 Indoor unit error E863 Suction pressure sensor error
E621 Outdoor unit model E864 High pressure switch error
E631 Inverter error E941 Over current error
E641 A.F. voltage error E951 Compressor control error
E653 IPM error E973 Outdoor unit fan motor error
E6A1 Display P.C.B. communication error E991 4-way valve error
E711 Discharge thermistor error EA11 Discharge temp. error
E721 Compressor thermistor error EA31 Compressor temp. error
E733 Heat Ex. Liquid outlet thermistor error EA51 Low pressure error
E741 Outdoor thermistor error EJ2U Branch boxes error

 

Operation Timer Swing Error Contents
Continuous blink Continuous blink OFF Indoor EEPROM abnormal
Continuous blink Continuous blink Continuous blink Outdoor EEPROM abnormal
2 flashes Continuous blink OFF Indoor room temperature sensor open
2 flashes Continuous blink Continuous blink Indoor room temperature sensor short circuited
3 flashes Continuous blink OFF Indoor heat exchanger temperature sensor open
3 flashes Continuous blink Continuous blink Indoor heat exchanger temperature sensor short circuited
4 flashes Continuous blink OFF Float switch operated
5 flashes Continuous blink OFF Communication error (serial reverse transfer error)
5 flashes Continuous blink Continuous blink Outdoor communication error (forward reverse transfer error)
6 flashes Continuous blink OFF Indoor fan abnormal
Continuous blink 2 flashes OFF Outdoor power source connection abnormal
Continuous blink 3 flashes OFF Outdoor heat exchanger temperature sensor open
Continuous blink 3 flashes Continuous blink Outdoor heat exchanger temperature sensor short circuited
Continuous blink 4 flashes OFF Outdoor temperature sensor open
Continuous blink 4 flashes Continuous blink Outdoor temperature sensor short circuited
Continuous blink 5 flashes OFF Outdoor discharge pipe temperature sensor or Compressor temperature sensor open
Continuous blink 5 flashes Continuous blink Outdoor discharge pipe temperature sensor or Compressor temperature sensor short circuited
Continuous blink 6 flashes OFF Outdoor high pressure abnormal
Continuous blink 7 flashes OFF Outdoor discharge pipe temperature or Compressor temperature sensor abnormal
Continuous blink 8 flashes OFF Compressor temperature thermistor error
Continuous blink 9 flashes OFF Pressure switch error
Continuous blink 10 flashes OFF IPM error
Continuous blink 11 flashes OFF CT error
Continuous blink 12 flashes OFF Active Filter Module error (AFM)
Continuous blink 13 flashes OFF Compressor rotor location cannot be detected (Permanent stop)
Continuous blink 14 flashes OFF Outdoor unit fan motor error

 

Outdoor Cassette & Ceiling Suspended : AOU18RLX, AOU24RLX, AOU36RLX, AOU42RLX

 

LED Error Contents 9 flashes Pressure switch abnormal
1 flash Communication error (indoor unit to Outdoor unit) 12 flashes IPM error
2 flashes Discharge pipe temperature sensor 13 flashes Compressor rotor position cannot detect
3 flashes Outdoor heat exchanger temperature sensor 14 flashes Compressor cannot operate/Start up error
4 flashes Outdoor temperature sensor 15 flashes Outdoor fan abnormal (upper fan)
7 flashes Compressor temperature sensor 16 flashes Outdoor fan abnormal (lower fan)
8 flashes Heat sink temperature sensor Lighting No error

 

Indoor Ceiling Cassettes

13 Outdoor unit doesn’t accept the signal from the indoor unit
14 Excessive outdoor pressure (permanent stop)
15 Compressor temperature sensor
16 Pressure switch error
17 IPM error
18 CT error
19 Active filter module (AFM) error
1A Compressor does not operate
1b Outdoor unit fan error
1c Communication error (inverter to multi controller)
1d 2-way valve sensor error
1E Expansion valve error
1F Connection indoor unit error

 

AUU18RCLX, AUU24RCLX, AUU36RCLX, AUU42RCLX

Error code Error Contents
01 Indoor unit doesn’t accept signal from outdoor unit
02 Room temperature sensor open
03 Room temperature sensor short circuited
04 Indoor heat exchanger temperature sensor open
05 Indoor heat exchanger temperature sensor short circuited
06 Outdoor heat exchanger temperature sensor
08 Power source connection error
09 Float switch operated
0A Outdoor temperature sensor error
0c Discharge pipe temperature sensor
11 Model abnormal/indoor EPROM abnormal
12 Indoor fan abnormal

 

FGLair Mobile App

Error Code Error Message
11.1  

 

Serial communication error between indoor/outdoor units

11.2
11.3
11.4
12.1 Remote controller communication error
18.1 External communication error
32.1 Indoor unit main PCB error
35.1 Indoor unit manual auto switch error
41.1 Indoor unit room temp. thermistor error
42.2 Indoor unit heat ex. temp. thermistor error
51.1  

Indoor unit fan motor 1 error

51.2
62.1  

Outdoor unit main PCB error

62.2
63.1  

Outdoor unit inverter PCB error

63.2
64.1

 

64.3  

Outdoor unit active filter / PFC circuit error

64.4
64.8
65.3 Outdoor unit IPM error
71.1 Outdoor unit discharge temp. thermistor error
73.3 Outdoor unit heat ex. temp. thermistor error
74.1 Outdoor air temp. thermistor error
84.1 Outdoor current sensor error
94.1 Outdoor unit trip detection
95.1  

Outdoor unit compressor motor control error

95.3
97.3 Outdoor unit fan motor 1 error
99.1 Outdoor unit 4-way valve error
A1.1 Outdoor unit discharge temperature 1 error

 

9RLS3Y, 12RLS3Y, 15RLS3Y

 

System

Pre-charge Amount Pre-charge Length Max Length Additional Charge Minimum Length Locked Rotor Amps
9R2 1 lb. 10 oz. 25 ft. 49 ft. .21 oz./ft. 9 ft. 47A
9CQ 1 lb. 9 oz. 25 ft. 49 ft. .2 oz./ft. 9 ft. 47A
9RQ 1 lb. 10 oz. 25 ft. 49 ft. .2 oz./ft. 9 ft. 47A
9RLQ 2 lbs. 2 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
9RL 1 lb. 7 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
9RLS 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
9RLS2 / 9RLS2H 2 lbs. 10 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 26A / N/A
9RLS3 / 9RLS3H / 9RLS3Y 2 lbs. 14 oz. 49 ft. 66 ft. .22 oz./ft. 10 ft. N/A
9RL2 1 lb. 7 oz. 49 ft. 66 ft. .22 oz./ft. 9 ft. 18A
9RLFC 2 lbs. 10 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. N/A
9RLFW / 9RLFW1 1 lb. 14 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 26A / N/A
9RLFF / 9RLFFH 2 lbs. 10 oz. 49 ft. 66 ft. .22 oz./ft. 9 ft. N/A
12R2 2 lbs. 3 oz. 25 ft. 49 ft. .21 oz./ft. 9 ft. 47A
12CQ 2 lbs. 1 oz. 25 ft. 49 ft. .2 oz./ft. 9 ft. 53A
12RQ 2 lbs. 3 oz. 25 ft. 49 ft. .2 oz./ft. 9 ft. 53A
12RLQ 1 lb. 12 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
12RL 1 lb. 12 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
12RLS 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
12RLS2 / 12RLS2H 2 lbs. 10 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 26A
12RLS3 / 12RLS3H /

12RLS3Y

2 lbs. 14 oz. 49 ft. 66 ft. .22 oz./ft. 10 ft. N/A
12RLFC 2 lbs. 10 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. N/A
12RLFW / 12RLFW1 2 lbs. 5 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 26A / N/A
12RL2 1 lb. 12 oz. 49 ft. 66 ft. .22 oz./ft. 9 ft. 18A
12RLFF / 12RLFFH 2 lbs. 10 oz. 49 ft. 66 ft. .22 oz./ft. 9 ft. N/A
15RLQ 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
15RLS 2 lbs. 10 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 26A
15RLS2 / 15RLS2H 2 lbs. 12 oz. 49 ft. 66 ft. .21 oz./ft. 9 ft. 30A
15RLS3 / 15RLS3H /

15RLS3Y

3 lbs. 1 oz. 49 ft. 66 ft. .22 oz./ft. 10 ft. N/A
15RLFF / 15RLFFH 2 lbs. 12 oz. 49 ft. 66 ft. .22 oz./ft. 9 ft. N/A
18CL 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
18RL 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
18RLB 3 lbs. 1 oz. 49 ft. 66 ft. .22 oz./ft. 10 ft. N/A
18RLQ 2 lbs. 9 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. 26A
18RLX 4 lbs. 3 oz. 49 ft. 165 ft. .2 oz./ft. 16 ft. 34A

 

18RLXS 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 34A
18RLXFW / 18RLXFW1 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 34A
18RLXFWH 4 lbs. 10.1 oz. 66 ft. 164 ft. .43 oz./ft. 16 ft. N/A
18RLFC 2 lbs. 14 oz. 49 ft. 66 ft. .2 oz./ft. 9 ft. N/A
18RLXFZ 4 lbs. 13.5 oz. 98 ft. 164 ft. .21 oz./ft. 16 ft. (49 ft. combined) 24A
18RLXFZH 4 lbs. 3 oz. 98 ft. 164 ft. .21 oz./ft. 16 ft. (49 ft. combined) N/A
24CL 3 lbs. 8 oz. 49 ft. 99 ft. .21 oz./ft. 9 ft. 29A
24RL 3 lbs. 8 oz. 49 ft. 99 ft. .21 oz./ft. 9 ft. 29A
24RLB 3 lbs. 1 oz. 49 ft. 66 ft. .22 oz./ft. 10 ft. N/A
24RLQ 3 lbs. 8 oz. 49 ft. 99 ft. .21 oz./ft. 9 ft. 29A
24RLX 4 lbs. 3 oz. 49 ft. 165 ft. .43 oz./ft. 16 ft. 34A
24RLXQ 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 36A
24RLXS 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 34A
24RLXFW / 24RLXFW1 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 34A
24RLXFWH 4 lbs. 10.1 oz. 66 ft. 164 ft. .43 oz./ft. 16 ft. N/A
24CL1 2 lbs. 14 oz. 49 ft. 99 ft. .21 oz./ft. 9 ft. 24A
24RML / 24RML1 4 lbs. 10 oz. 98 ft. 98 ft. N/A 16 ft. 34A
24RLXFZ 4 lbs. 14 oz. 98 ft. 164 ft. .21 oz./ft. 16 ft. 24A
24RLXFZH 4 lbs. 14 oz. 98 ft. 229 ft. .21 oz./ft. 16 ft. (49 ft. combined) N/A
30CLX / 30CLX1 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 36A / 34A
30RLXB 4 lbs. 10 oz. 66 ft. 164 ft. .43 oz./ft. 16 ft. N/A
30RLXQ 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 36A
30RLX 4 lbs. 10 oz. 66 ft. 166 ft. .43 oz./ft. 16 ft. 34A
30RLXEH 6 lbs. 12 oz. 65 ft. 246 ft. .43 oz./ft. 16 ft. N/A
36CLX / 36CLX1 4 lbs. 10 oz. 66 ft. 165 ft. .43 oz./ft. 16 ft. 36A / 34A
36RLX 4 lbs. 14 oz. 49 ft. 165 ft. .43 oz./ft. 16 ft. 37A
36RLXB 4 lbs. 10 oz. 66 ft. 164 ft. .43 oz./ft. 16 ft. N/A
36RML / 36RML1 7 lbs. 1 oz. 98 ft. 164 ft. .27 oz./ft. 16 ft. 37A
36RLXFZ 7 lbs. 4.5 oz. 164 ft. 230 ft. .27 oz./ft. 16 ft. (49 ft. combined) 37A
36RLXFZ (18+18) 7 lbs. 4.5 oz. 66 ft. 131 ft. .27 oz./ft. 25 ft. (49 ft. combined) 37A
36RLXFZ1 7 lbs. 1 oz. 164 ft. 230 ft. .21 oz./ft. 16 ft. (49 ft. combined) N/A
36RLXFZ1 (18+18) 7 lbs. 1 oz. 66 ft. 131 ft. .21 oz./ft. 25 ft. (49 ft. combined) N/A
36RLXFZH 8 lbs. 13 oz. 164 ft. 230 ft. .21 oz./ft. 17 ft. N/A
42RLX 7 lbs. 8 oz. 66 ft. 230 ft. .43 oz./ft. 16 ft. 77A
45RLXFZ 7 lbs. 1oz. 164 ft. 262 ft. .21 oz./ft. 16 ft. N/A
48RLXFZ 7 lbs. 10 oz. N/A 377 ft. N/A 16 ft. with no tube 44A
48RLXFZ1 7 lbs. 10 oz. N/A 377 ft. N/A 17 ft. with tube 44A

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