Celiera DUCTLESS MINI SPLIT AIR CONDITIONING SYSTEMS Service Manual download pdf (Page 57)

9. Troubleshooting

9.1 Indoor Unit Error Display

Display LED STATUS

EEPROM parameter error

E1 Indoor / outdoor units communication protection

E2 Zero-crossing signal error

E3 Indoor fan speed out of control

E5 Open or short circuit of outdoor temperature sensor or outdoor unit

EEPROM parameter error

E6 Open or short circuit of room or evaporator temperature sensor

E7 Outdoor fan speed out of control

P0 IBM malfunction or IGBT over-strong current protection

P1 Over voltage or too low voltage protection

P2 Temperature protection of compressor top.

P4 Inverter compressor drive error

Note: E4 & P3: Reserved function.

Outdoor unit error display:

On the outdoor PCB, there are two LED lights. One is green, the other is red. You can judge what the

error is through the status of the two lights.

Error

LED6

Green

LED5

Red

Indoor unit display

Over voltage or too low voltage protection

O O P1

Stand by O X

Over voltage or too low voltage protection

O  P1

Normal operation X O

Inverter compressor drive error X  P4

Inverter compressor drive error  O P4

IBM malfunction or IGBT over-strong

current protection

 X P0

Inverter compressor drive error   P4

O light X off flash

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Celiera DUCTLESS MINI SPLIT AIR CONDITIONING SYSTEMS Service Manual Page 57