Indoor Unit Error Display - COMFORT-AIRE A-DVC24SF-1 Service Manual

Service Manual - DVC 09/12/18/24 SF Series

8.1 Indoor Unit Error Display

Operation
Timer lamp
lamp
☆ 1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 7 times
☆ 1 times
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 1 times
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 7 times
*P3
1) In heating mode, when the outdoor temperature is lower than -13°F for 1 hour, the indoor unit
display error code P3.
2) If the outdoor temperature is higher than -7°F for 10 minutes and compressor stop for 1 hour or
outdoor temperature is higher than 23°F for 10 minutes, then the unit will return to work.
* Fault Symptom: The display board shows a garbled code or a code that is not an error code found
in the service manual nor a temperature reading.
Display LED STATUS
X E0 Indoor unit EEPROM parameter error
X E1 Indoor / outdoor units communication error
X E2 Zero-crossing signal detection error
X E3 Indoor fan speed has been out of control
Indoor room temperature sensor T1 open circuit or short
X E4
circuit
Evaporator coil temperature sensor T2 open circuit or
X E5
short circuit
X EC Refrigerant leakage detection
O F0 Overload current protection
Outdoor ambient temperature sensor T4 open circuit or
O F1
short circuit
Condenser coil temperature sensor T3 open circuit or
O F2
short circuit
Compressor discharge temperature sensor TP open
O F3
circuit or short circuit
O F4 Outdoor unit EEPROM parameter error
O F5 Outdoor fan speed has been out of control
P0 IPM malfunction or IGBT over-strong current protection
☆
P1 Over voltage or over low voltage protection
☆
High temperature protection of IPM module or
P2
☆
compressor top diagnosis and solution
P3* Outdoor ambient temperature too low.
☆
P4 Inverter compressor drive error
☆
P5 Indoor units mode conflict (multi-zone ONLY)
☆
P6 Low pressure protection(Only for 36K models)
☆
O（light） X（off）
☆（flash）
29
34