Haier AU122AEERA Installation Instructions Manual page 26

Installation Procedure
Flash times of
Trouble description
LED 2
on mainborad
Spdu / ISPM module failure
1
Abnormal of DC moter
2
Communication error between indoor and
3
outdoor unit
Compressor discharging temprerture
4
protection
5 Spdu / IPM module over current protection
6
Abnormal of outdoor
7
Abnormal of piping sensor
8
High pressure protection
Abnormal of compressor discharge sensor
9
10 No zero cross signal input
14 Eeprom failure
15
Compressor JAM(only for spdu)
16 Compressor vibration abnormal (only for spdu)
17
Compressor start-up abnormal
Rotor of inner compressor is malposition
18
19 Position-inspect circuit failure
Compressor failure
20
Abnormal of Compressor suction sensor
21
Communication error between main board
22
and spdu / ISPM module
23
Spdu / ISPM module temperture protection
24 Low pressure protection
Condenser air inlet temp. sensor failure
25
Module over-voltage protection (only for ISPM)
26
27
Module lack-voltage protection(only for ISPM)
28
4-way valve reverse failure
Lack off refrigerant or discharge side dirty
29
NOTE:
1. shows 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
ambient sensor
shows it is not resumable fault.
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
Detect no zero cross signal last for 2min
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
Spdu / ISPM module temperture is too high
System low pressure under
Condenser air inlet temp. sensor
short-circuit or open-circuit last 60 sec
Send from ISPM module
Send from ISPM module
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.
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
Remarks
0.05Mpa