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Table 9. Indoor Unit Fault Codes (09/24)

Running Light

Short Flashes

State of

Timer Light

Display Description

1 time OFF E0 IndoorunitEEPROMerror

2 times OFF E1 Communicationerrorbetweenindoorandoutdoorunits

4times OFF E3 Indoor fan speed error

5 times OFF E4 Indoor return air temperature sensor error

6 times OFF E5 Indoor coil temperature sensor error

7 times OFF EC Lowrefrigerant

8 times OFF EE Highwaterlevelalarm

1 time ON F0 Outdoorcurrentoverloadsensed

2 times ON F1 Outdoorambienttemperaturesensorerror

3 times ON F2 Outdoorcoiltemperaturesensorerror

4times ON F3 Compressordischargetemperaturesensorerror

5 times ON F4 OutdoorunitEEPROMerror

6 times ON F5 Outdoorunitfanspeederror

1 time Flash P0 Inverter module IPM error

2 times Flash P1 Highorlowvoltageprotection

4times Flash P3 Outdoorunitlowtemperaturelockout

5 times Flash P4 Compressor drive error

6 times Flash -- Modeconict

7 times Flash P6 Compressorhigh-orlow-pressureswitchopen.

Table 10. Indoor Unit Fault Codes (09/30-48)