Haier Unitary smart series Service Manual page 140

Ensure that alarm indicating time is over 2 minutes and 50 seconds.
(1): Resumable alarm, and will be sent to indoor unit.
(2): Resumable alarm, but if in 30 minutes it occurs 3 times, it can be resumed only when being
electrified after being powered off.
Failure Emission Outdoor
code code indicator display
00001
01 01
00010
02 02
00011
03 no
00100
04 04
00101
05 05
00110
06 06
00111
07 07
01000
08 08
01001
09 09
01010
10 10
11 No No
12 No No
13 No No
14 14 01110
15 1 01111
10000
16 1
10001
17 1
10010
18 18
10011
19 19
10100
20 1
10101
21 No
10110
22 No
Failure description Corresponding outdoor PCB failure
Power module IPM protection
DC fan motor failure DC fan motor failure
Communication Outodor alarms, not sends to indoor.
failure If no communication in 4 minutes, outdoor
shuts off and alarm, the failure can be
resumable.
Compressor Discharging temp. over 117
discharging 3 times in 30 minutes and then send signal to
temperature too high indoor.
Over current AC current overhigh protection or current
transducer broken down.
Outdoor ambient Resumable, if sensor is disconnected, alarm
temp. sensor failure will occur and keeps for 3 minutes, then
resumes due to signal.
Outdoor coil temp. Outdoor
sensor failure sensor abnormal
High pressure switch Acts 3 times in 30 minutes
failure
Discharging temp. Alarm 4 minutes later after starting up,
sensor failure
Power supply over Pre-set for 50Hz
high/low voltage
Overload in heating No send signal to indoor
No No send signal to indoor
No No send signal to indoor
Outdoor EEPROM Outdoor EEPROM failure
failure
Power module failure Compressor blocked
Power module failure Compressor heavy vibration
Power module failure Abnormal compressor startup
Power module failure Compressor running faulty
Power module failure Detecting circuit abnormal
Power module failure Compressor broken down
Compressor suction 10 minutes later after startup, measure TS
temp. too high—for over 40
the unit with EEV
Communication failure Not communicate for 4 minutes contineously,
between outdoor PCB it will alarm
and the module
-140-
a__ ^
defrosting sensor,
discharging temperature abnormal
for 5 minutes
a` a`
, it will confirm
discharging