Failure
code on
wired
controller
Power lamp
flash
times/LED on
PCB flash times
failure description Reasons
E0 10 Fault in drain system Float switch is open
E1 1
Indoor ambient temp. sensor
failure
Sensor broken down or short circuit for more than
2m continuously
E2 2
Indoor pipe temp. sensor failure Sensor broken down or short circuit for more than
2m continuously
E3 3
Outdoor ambient temp. sensor
failure
Sensor broken down or short circuit for more than
2m continuously
E4 4
Outdoor pipe or discharge
temp. sensor failure
Sensor broken down or short circuit for more than
2m continuously or outdoor discharge temp. over
120℃ for 3 times continuously in 30m
E5 5
overcurrent Indicate phase failure when been electrified for
the first time, indicate overcurrent protection
during working procedure
6 High pressure malfunction Outdoor high pressure switch acts
E6
16
Low pressure
malfunction
Outdoor low pressure switch acts or the
proctector on the top of compressor breaks for
protection
E8 8
Communication failure between
indoor PCB and panel or wired
controller
communication abnormal for more than 4m
continuously
E9 9
Communication failure between
indoor and outdoor unit
communication between indoor PCB and outdoor
PCB open for more than 4m
E7 13
Temperature cutoff protection System failure. System cooling or heating
function abnormal
1.3 For other m
odels
Failure code
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