Comfort-Aire Inverter Single Zone Ductless Mini-Split Error Codes for Air Conditioner DVS Series:
| A-DVH24SF-1 | A-DVH18SF-1 | A-DVH09SF-0 | A-DVH12SF-0 |
| B-DVH24SF-1 | B-DVH18SF-1 | B-DVH09SF-0 | B-DVH12SF-0 |
Troubleshooting error Fan speed has been out of control
| No | Error Code | Descryption | Malfunction conditions | Possible causes |
| 1 | E0/F4 | EEPROM parameter error | Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip |
• Installation error • PCB faulty |
| 2 | E1 | Indoor/outdoor unit’s communication | Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously. |
• Wiring error • Indoor or outdoor PCB faulty |
| 3 | E2 | Zero crossing detection error | When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal |
• Connection error • PCB faulty |
| 4 | E3/F5 | Fan speed has been out of control | When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure |
• Wiring error • Fan assembly faulty • Fan motor faulty • PCB faulty |
| 5 | E4/E5/F1/F2/F3 | Open circuit or short circuit of temperature sensor | If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure |
• Wiring error • Sensor faulty |
| 6 | EC | Refrigerant Leakage Detection | Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2°C(Tcool－35.6°F) does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC” and AC will turn off. |
• T2 sensor faulty • Indoor PCB faulty • System problems, such as leakage or blocking. |
| 7 | F0 | Overload current protection | An abnormal current rise is detected when checking the specified current detection circuit |
• Power supply problems. • System blockage • PCB faulty • Wiring error • Compressor malfunction |
| 8 | P0 | IPM malfunction or IGBT over-strong current protection | When the voltage signals that IPM sent to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off |
• Wiring error • IPM malfunction • Outdoor fan assembly faulty • Compressor malfunction • Outdoor PCB faulty |
| 9 | P1 | Over voltage or too low voltage protection | An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit |
• Power supply problems. • System leakage or blockage • PCB faulty |
| 10 | P2 | High temperature protection of IPM module or compressor top | If the sampling voltage is not 5V, the LED will display the failure | Installation error Power supply problems. System leakage or blockage PCB faulty |
| 11 | P4 | Inverter compressor drive error | An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on |
• Wiring error • IPM malfunction • Outdoor fan assembly faulty • Compressor malfunction • Outdoor PCB faulty |
| 12 | P6 | Low pressure protection | When the pressure of system reach a certain value, the low pressure protector will switch off. After the pressure returns to normal, the protection code will disappear |
• Wiring error • Pressure protector faulty • Fan motor faulty • PCB faulty • System problems. |
When the check engine light of your Ford car turns on, you need to get the Ford engine codes list…
Renault car owners can diagnose the problems signaled by its OBD2 system using a code reader and an app that…
An OBD fault code reader is a versatile tool that you can use for diagnostic purpose when performing a car…
For every car owner, having an engine light code reader is considered essential. With this code reader, you can essentially…
If you have a GMC truck, van, or SUV, you can scan your car’s GMC diagnostic trouble codes by using…
With an OBD-II code reader, you can retrieve the codes that your car’s OBD-II system generates and stores when it…