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Maintenance
4.2
Outdoor unit error messages
Led signaling on the board (only on 35M - 53M - M70 units)
Flashing= error displayed on the indoor unit
Slow flashing = stand-by
LED on = unit ON
Error code
EC 51
Outdoor EEPROM malfunction
EL 01
Indoor / outdoor units communication error
PC 40
Communication malfunction between IPM board and outdoor main board
PC 08
Outdoor overcurrent protection
PC 10
Outdoor unit low AC voltage protection
PC 11
Outdoor unit main control board DC bus high voltage protection
PC 12
Outdoor unit main control board DC bus high voltage protection / 341 MCE error
PC 00
IPM module protection
PC 0F
PFC module protection
EC 71
Overcurrent failure of outdoor DC fan motor
EC 72
Lack phase failure of outdoor DC fan motor
EC 07
Outdoor fan speed has been out of control
PC 43
Outdoor compressor lack phase protection
PC 44
Outdoor unit zero speed protection
PC 45
Outdoor unit IR chip drive failure
PC 46
Compressor speed has been out of control
PC 49
Compressor overcurrent failure
PC 30
High pressure protection
PC 31
Low pressure protection
PC 0A
High temperature protection of condenser
PC 06
Temperature protection of compressor discharge
PC 02
Top temperature protection of compressor
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short circuited
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short circuited
EC 54
Compressor discharge temperature sensor TP is in open circuit or has short circuited
EC 50
Open or short circuit of outdoor unit temperature sensor (T3,T4.TP)
PC 0L
Low ambient temperature protection
Description
19
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