ElectrIQ iQool9PLUS-V2 - Page 39

TROUBLESHOOTING AND SELF DIAGNOSIS
39
OUTDOOR UNIT FAULT CODES
The outdoor unit has an LED on the power board. This LED will be illuminated when
the compressor is running and blink 1s on and 1s off when the compressor is in
standby. If there is a fault on the outdoor unit, it will blink on and off for half a second at
a time, followed by a 3s gap. The number of consecutive blinks will show the fault as
per the table below:
No. of flashes
Fault
2
Indoor and outdoor communication fault
3
Main board and driver board communication fault
4
Compressor starting abnormal (phase failure, reverse)
5
Compressor out-of-step fault
6
IPM module fault
7
Compressor shell roof fault/protection
8
Exhaust temperature sensor fault
9
Suction temperature sensor fault
10
Outdoor coil temperature sensor fault
11
Outdoor ambient temperature sensor fault
12
Outdoor DC fan motor fault
13
Outdoor AC current protection
14
Compressor phase current protection
15
Outdoor unit over-high/over-low AC voltage protection
16
Outdoor unit over-high/over-low DC voltage protection
17
IPM over-high temperature protection
18
Exhaust temperature overheat protection
19
Cooling indoor coil anti-freezing protection
20
Cooling outdoor coil overheat protection shutdown
21
Heating indoor coil overheat protection
22
Cooling outdoor ambient temperature over-low protection
23
Heating outdoor ambient temperature over-high protection