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Display on outdoor power source board:
blink time (n)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Air Conditioner Service Manual
IPM protection
Over voltage /lower voltage
Overcurrent
Exhaust over temperature protection
Outdoor coil over temperature protection
Drive fault and protection (V1，VP1)
Communication fault with indoor unit
Compressor overheat fault (compressor top switch)
Short-circuit / open-circuit fault of outdoor temperature sensor
Short circuit / open-circuit fault of outdoor heat exchanger temperature
sensor
Short-circuit / open-circuit fault of exhaust temperature sensor
Voltage sensor fault
Current sensor fault
IPM fault
Communication fault between power source board and IPM
No feedback from DC fan motor(outdoor unit)
Defrost state
Failure
10
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