Pioneer WT009GLFI22HLD, Service Manual

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Air Conditioner Service Manual
11
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Outdoor failure display
There is a LED on outdoor power board, it blinks 1s ON and 1s OFF while compressor standby and
it always light (ON) while compressor running; If there is failure happened on ODU, The indicator (LED)
alerts the fault in a cycle
as such that it is bright for 0.5 seconds, dark for 0.5 seconds, blinks “n” times
and then dark for 3 seconds. For details as table below.
Display on outdoor power source board:
blink time (n) Failure
1 PM protection
2 Over voltage /lower voltage
3 Overcurrent
4 Exhaust over temperature protection
5 Outdoor coil over temperature protection
6 Drive fault and protection (V1
，
VP1)
7 Communication fault with indoor unit
8 Compressor overheat fault (compressor top switch)
9 Short-circuit / open-circuit fault of outdoor temperature sensor
10
Short circuit / open-circuit fault of outdoor heat exchanger temperature
11 Short-circuit / open-circuit fault of exhaust temperature sensor
12 Voltage sensor fault
13 Current sensor fault
14 PM fault
15 Communication fault between power source board and IPM
16 No feedback from DC fan motor(outdoor unit)
17 Defrost state