For
remote
type, flash
times
Failure
code on
wired
controller
For central
control,
failure code
Failure description Reason
10 08 21 Drainage system failure Float switch broken down for more than
25m continuously
1 01 01 Indoor ambient temp. sensor
failure
sensor broken down or short circuit for
more than 2m continuously
2 02 02 Indoor coil temp. sensor failure sensor broken down or short circuit for
more than 2m continuously
3 4A 11 Outdoor ambient temp. sensor
failure
sensor broken down or short circuit for
more than 2m continuously
4 49 12 Outdoor coil temp. sensor
failure (compressor
discharging temp. sensor)
Sensor broken down or short circuit for
more than 2m continuously
5 48 10 Over-current protection CT check abnormal 3 times in 30m
6 53 14 High pressure abnormal High pressure switch acts 3 times in 30m
8 07 06 Communication between wired
controller and indoor abnormal
Communication abnormal for more than
4m continuously
9 06 05 Communication between
indoor and outdoor abnormal
Communication abnormal for more than
4m continuously
11 0B 30 Outside alarm signal input Outside signal broken down for more than
10s
12 03 20 Gas pipe temp. sensor
abnormal
Sensor broken down or short circuit for
more than 2m continuously
13 0D 31 Solenoid valve abnormal Solenoid valve act incorrectly 3 times
continuously
15 05 17 EEPROM abnormal EEPROM data missing
16 54 26D Outdoor pressure switch or
discharging protector abnormal
Pressure switch or discharging protector
disconnected; or CN11 on indoor PCB
disconnected. The failure occurs only
when there is no outdoor PCB.
1.1 For convertible type units
1. Failure code
Failure code
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