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Classification
Code
Error Description
Error
C0
The CAN communication goes wrong in an all-round
way.
C1
Multiple main control panel errors
C2
The number of outdoor unit modules is abnormal
(Deficiency/increase)
C3
The communication between the main control panel and
the variable-frequency compressor drive goes wrong.
C4
The communication between the main control panel and
the variable-frequency fan drive goes wrong.
C5
The communication between the indoor unit and the wire
controller goes wrong.
Protection
P0
Module protection
P1
Over/Under-voltage protection
P2
Over-current protection (Variable-frequency compressor)
P3
Outdoor unit protection
P4
Exhaust high-temperature protection (Variable-frequency
compressor or Slave F3)
P5
Under-cooling protection in the cooling mode (Indoor unit
coil temperature protection)
P6
Over-heating protection in the
cooling mode (Condenser high-temperature
protection)
P7
Over-heating protection in the
heating mode (Indoor unit coil
temperature protection)
P8
Outdoor high/low-temperature protection
P9
Drive protection (load abnormal)
PA
The modes conflict and the top air-out board
communication goes wrong.
d1
Indoor fan protection
d2
Auxiliary electric heating protection
d3
Water full protection
d4
Anti-freezing protection
d5
The modes conflict.
d6
The IP address of the indoor unit is abnormal.
d7
The capacity dial is wrong.
d8
The engineering numbers conflict.
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