pressure is too low and low pressure switch is running for 30 senconds, compressor and outdoor
fan motor will stop and will send failure
13. Trouble code
The remote receiver, wired controller and indoor PCB indicator all can indicate the failure code.
Remote
control
indoor
PCB flash
times
Wired
controll
er
display
Central
controll
er
display
Fault description
Possible cause
Remedy
10 08(08H)
21D
Fault in drain
system
Float switch is open 25m or
longer
due to the signal,
resumable
1 01(01H)
01D
Indoor ambient
temp. sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
2 02(02H)
02D
Indoor pipe temp.
sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
3 74(4AH)
11D
Outdoor ambient
temp. sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
4 73(49H)
12D
Outdoor pipe temp.
sensor failure
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
5 72(48H)
10D
Overcurrent
Detector CT current is above
the limit 3 times within 30m.
Need to be
checked, reset
6 83(53H)
14D
High pressure
malfunction
High pressure switch acts for
3 times in 30m
Need to be
checked, reset
7 71(47H)
22D
Power failure
Wrong phase, phase
failure or loss
Need to be
checked, reset
8 07(07H)
06D
Communication
failure between
wired controller and
indoor unit
communication abnormal for
more than 4m continuously
due to the signal,
resumable
9 06(06H)
05D
Communication
failure between
indoor and outdoor
units
communication abnormal for
more than 4m continuously
due to the signal,
resumable
11 11(0BH)
30D
External alarm
signal input
External alarm is cut out for
10s or longer
due to the signal,
resumable
12 03(03H)
20D
Fault in coil/suction
line temp. sensor
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
13 13(0DH
)
31D
Temperature
shut-off
Directional valve malfunction
repeats 3 times
Need to be
checked, reset
14 76(4CH
)
15D
Fault in discharging
temp. sensor
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
15 05(05H)
17D
EEPROM error
EEPROM data loss
Default
operation
16 84(54H)
26D
Low pressure
malfunction
low pressure switch is
activated
Need to be
checked, reset
17 80(50H)
15D
Compressor
overheat
Detected temperature of
discharge line is higher
than 120
℃
Resrorable
when lower
than 100
℃
18 12(0CH
)
23D
Fault in operation
mode
Indoor units operate in
different modes
Resrorable in
same o
peration
mode
19 75(4BH)
18D
Outdoor
coil
B(suction
sensor-multi)
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
20 77(4DH
)
15D Outdoor
discharge B (oil
temp
sensor broken down or short
circuit for more than 2m
continuously
due to the signal,
resumable
Model: AD182ALERA AD362AHERA
Commercial Air Conditioner
32