Troubleshooting
ERROR
CODE
3F
Compressor drive PFC hardware
protection
41
Outdoor DC fan 1PM far-drive protec-
tion PCB
99
Communication error between con-
troller PCB and indoor unit main PCB
9A
Indoor DC fan module temperature
protection
9H
Power failure at indoor unit start up
9C
Indoor unit motor over current pro-
tection
9J
Indoor unit motor over voltage and
under voltage protection
9E
Indoor unit fan 1PM far-drive protec-
tion board
9F
Indoor DC fan EE protection far-drive
plate
DESCRIPTION
POSSIBLE CAUSE
•
Damage to PFC circuit components
•
Damage to reactors
•
Damage to components 1PM of DC fan
•
Abnormal power supply of fan drive board
•
Bad contact of the communication line of the fan drive plate
•
Damage to fan drive plate
•
Damage to the fan plate
•
Damage to the fan motor
•
High DC motor speed
•
Excessive fan motor operating current
•
Excessive input voltage
•
Lower input voltage
•
Damage to the sensor in the 1PM module of the indoor unit motor
•
Damage to the motherboard
137
English
infiniton.es