Haier AB18CS1ERA - Page 379

Electic Control and
Debugging
377
Super Match
Malfunction
code
Trouble description Analyze and diagnose Remark
19
Over current protection in course of
compressor xed speed operation
detected by software
If it occurs 3 times in 1 hour, conrm the
failure, the former twice will not alarm
Non-resumable
23
Module temp. too high or module temp.
sensor abnormal
If it occurs 3 times in 1 hour, conrm the
failure, the former twice will not alarm
Non-resumable
24
Over current protection in course of
compressor frequency going up down
detected by software
If it occurs 3 times in 1 hour, conrm the
failure, the former twice will not alarm
Non-resumable
27 Without connection to compressor
If it occurs 3 times in 1 hour, conrm the
failure, the former twice will not alarm
Non-resumable
28 High voltage protection for module From moudle board Resumable
29 Low voltage protection for module From moudle board Resumable
31 Module start mode switch failure Module start failure for 5 times Non-resumable
32 Module input over current software
Input over current been detected by
module software
Non-resumable
33 Input current detection circuit error
Input current detection circuit of the
power module harware abnormal
Non-resumable
34 Module input over current hardware
Input over current been detected by
module hardware
Non-resumable
38
Communication abnormal among
modules
It can not detect the input signal for 2
minutes
Resumable
39 Mid-condenser temp. sensor abnormal
Sensor is detected below 20 or over
1000 for 60 seconds, but in defrosting or
within 6 minutes after defrosting, it will
not alarm
Resumable
43 Low pressure switch abnormal
After compressor running for 3 minutes,
if switch is detected unconnected for
30seconds, it alarms, if it occurs 3 times
in 1 hour, conrm this failure, if it occurs
3 times in 1 hour, conrm the failure, but
in defrosting or within 6 minutes after
defrosting, it will not alarm
Non-resumable
44 High pressure switch abnormal
After compressor running for 3 minutes,
if switch is detected unconnected for
30seconds, it alarms, if it occurs 3 times
in 1 hour, conrm this failure, or if Tcm
is over 68 degree for 10 secionds for 3
times
Non-resumable
Note:
The ash times of outdoor mainboard(ECU) LED1 indicates the malfuction code. for example, LED1 ash 3 times,
the malfunction code is 3. The ash times or malfuction code of indoor unit can also indictes the malfuction code
too.the method to conrm please refer to indoor unit manul.