Haier AU122AEERA - Indoor Unit Hanging; Pipe and Insulation Material; Hose Details; Drain Confirmation

Installation Procedure
24
Trouble description
Abnormal of DC moter
Compressor discharging temprerture
protection
Spdu / IPM module over current protection
Abnormal of piping sensor
High pressure protection
Eeprom failure
Communication error between indoor and
outdoor unit
Abnormal of outdoor ambient sensor
Compressor JAM(only for spdu)
Abnormal of compressor discharge sensor
Compressor vibration abnormal (only for spdu)
No zero cross signal input
Spdu / ISPM module failure
Compressor start-up abnormal
Rotor of inner compressor is malposition
Position-inspect circuit failure
Compressor failure
Abnormal of Compressor suction sensor
Communication error between main board
and spdu / ISPM module
Low pressure protection
Spdu / ISPM module temperture protection
Flash times of
LED 2
on mainborad
1
2
3
4
5
6
7
8
9
14
15
16
17
18
19
20
21
22
24
10
23
Analyze and diagnose
Spdu / ISPM module failure
Jam of DC motor or motor failure
Communication fail over 4min
Compressor discharging tempreature
over 120 centigrade
Current of spdu / ISPM module over
limit
Outdoor ambient sensor short-circuit or
open-circuit last 60 sec
Piping sensor short-circuit or open-
circuit last 60 sec
System high pressure over 4.5Mpa
Compressor discharge sensor short-
circuit or open-circuit last 60 sec
Outdoor main board eeprom fail
Inner compressor is abnormal JAMED
Compressor vibration abnormal when
start-up
Compressor start-up abnormal
Rotor of inner compressor is malposition
when start-up
Position-inspect circuit failure of spdu
/ISPM module
Compressor failure
Compressor suction sensor short-circuit
or open-circuit last 60 sec
Communication error between main
board and spdu / ISPM module
System low pressure under 0.05Mpa
Spdu / ISPM module temperture is too high
1. shows resumable fault, shows it is not resumable fault.
Normally, the
failure is not resumable if it occurs three times in an hour.
2.The outdoor unit failure code is defferent from indoor unit
For model AU28/36/42/52
Remarks
NOTE:
25
Condenser air inlet temp. sensor
short-circuit or open-circuit last 60 sec
Condenser air inlet temp. sensor failure
Module over-voltage protection (only for ISPM)
Send from ISPM module
Module lack-voltage protection(only for ISPM)
Send from ISPM module
4-way valve reverse failure
Alarm and stop if detect Td-Tci< 25 last
for 1min after compressor has started for
10min in heating mode, confirm the failure
if it appears 3 times in one hour.
Lack off refrigerant or discharge side dirty
Alarm and stop if detect Td-Tci> 25 last
for 1min after compressor has started for
10min in cooling mode, confirm the failure
if it appears 3 times in one hour
26
27
28
29
Detect no zero cross signal last for 2min