Haier 1U71S2SS5FA - Page 24

0150550135
Suction temperature sensor failure
Suction temperature sensor
short-circuit or open-circuit or
the compressor connection is poo
r
LED
flash
times
2
9
15
8
12
10
5
13
19
1
18
4
6
24
25
17
16
11
Contents of Malfunction
Diagnosis and Analysis
Eeprom
fault
IPM fault
Outdoor main board eeprom fault
IPM fault
Communication fail over 4min
Communication between main board
and spdu module
Compressor over current been detected
by control board
Compressor overcurrent detected
by control board
Send from module
Module over/lack-voltage protection
Compressor Td temp. protection
Compressor Td temp. over 110 centigrade
Abnormal of DC fan motor
Jam of DC motor or motor fault
Abnormal of piping sensor
Piping sensor short-circuit or open-circuit
Abnormal of ourdoor ambient sensor
Outdoor ambient sensor short-circuit or
open-circuit
Abnormal of compressor discharge
sensor
Compressor Td sensor short-circuit or
open-circuit
Communication fail over 4min
Communication between indoor
and outdoor unit
Lack of refrigerant
Check if there is leakage in the unit
4-way valve reverse failure
Alarm and stop if detect Td-Tci<=15 last for
1min after compressor has started for 10min
in heating mode,confirm the failure if it
appears 3 times in one hour.
Compressor jam(only for spdu) Inner compressor is abnormal jamed
Module PWM select circuit error Module PWM select wrong circuit
Compressor software instantaneous
overcurrent protection
Find the cause of press overcurrent
Find the cause of compressor over-current protection
Compressor phase over-current
AC current overcurrent protection
3
Outdoor panel AC current overcurrent
protection
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