Haier 4U85S2SR5FA - Page 33

Trouble shooting
29
Faulty of outdoor unit EEPROM 1 15 2 1
IPM overcurrent or short circuit 2 16 2 2
41824
Module operated overload 5 19 2 5
61A26
81C28
Malfunction of the DC fan motor 9 1D 2 9
Malfunction of defrosting temp. sensor 10 1E 3 0
Malfunction of compressor suction temp. sensor 11 1F 3 1
Malfunction of ambient temp. sensor 12 20 3 2
Malfunction of compressor discharge temp. sensor 13 21 3 3
Communication failure between indoor&outdoor unit 15 23 3 5
Lack of refrigerant or discharging pipe blocked 16 36 3 6
4-way valve switching failure 17 25 3 7
Loss of synchronism detection 18 26 3 8
Indoor thermal overload 20 28 4 0
Indoor frosted 21 29 4 1
Module thermal overload 23 2B 4 3
Compressor start failure 24 2C 4 4
Module input overcurrent 25 2D 4 5
MCU reset 26 2E 4 6
Module input current detect circuit malfunction 27 2F 4 7
Malfunction of liquid pipe temp. sensor for indoor unit A 28 30 4 8
Malfunction of liquid pipe temp. sensor for indoor unit B 29 31 4 9
Malfunction of liquid pipe temp. sensor for indoor unit C 30 32 5 0
Malfunction of module temp.sensor
Momentary power failure detection
38 3A 5 8
Malfunction of condensing temp. sensor 39 3B 5 9
Malfunction of liquid pipe temp. sensor for indoor unit E 40 3C 6 0
System high pressure switch off 42 3E 6 2
System low pressure switch off 43 3F 6 3
44 40 6 4
45 41 6 5
Timer lamp
flash time
Running lamp
flash time
Communication failure between Module and ECU
Module low or high voltage
Discharging temperature overheating.Lack of refrigerant,
ambient temperature too high or PMVs blocked.
Malfunction of liquid pipe temp. sensor for indoor unit D 31 33 5 1
Malfunction of gas pipe temp. sensor for indoor unit A 32 34 5 2
Malfunction of gas pipe temp. sensor for indoor unit B 33 35 5 3
Malfunction of gas pipe temp. sensor for indoor unit C 34 36 5 4
Malfunction of gas pipe temp. sensor for indoor unit D 35 37 5 5
Malfunction of gas pipe temp. sensor for indoor unit E 36 38 5 6
System high pressure protection.Refrigerant
overabundance,High condensing temp. or
malfunction of fan motor.
System low pressure protection.Refrigerant shortage,
Low defrosting temp., or malfunction of fan motor.
Cassette and convertible
indoor display outdoor error
code use the timer and runing
lamp
Wired
controller
display
Outdoor LED
display
Possible reasons