Indoor Unit Error Display - Fisher FSAIF-Pro-95AE2 Service Manual

9.1 Indoor Unit Error Display

* 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.
Trouble shooting:
Use the remote controller. If the unit does not respond to the remote, the indoor PCB needs to be
replaced; if the unit does respond, then the display board needs to be replaced.
Display LED STATUS
E0 Indoor unit EEPROM parameter error
E1 Indoor / outdoor units communication error
E3 Indoor fan speed has been out of control
Indoor room temperature sensor T1 open circuit or short
E4
circuit
Evaporator coil temperature sensor T2 open circuit or
E5
short circuit
EC Refrigerant leakage detection
F0 Overload current protection
Outdoor ambient temperature sensor T4 open circuit or
F1
short circuit
Condenser coil temperature sensor T3 open circuit or
F2
short circuit
Compressor discharge temperature sensor T5 open
F3
circuit or short circuit
F4 Outdoor unit EEPROM parameter error
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
P4 Inverter compressor drive error
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