COMPACT CASSETTE TECHNICAL OVERVIEW
ENGLISH
D-10
Error Codes
The error codes that are displayed on the indoor units may vary from the outdoor unit codes. The information communicated by
the error code will be the SAME for both indoor and outdoor units even though the numbers may differ.
Indoor
LED5
Indoor
LED1
Outdoor
LED
Diagnosis
2
1
1
Outdoor EEPROM failure
2
2
2
IPM overcurrent or short circuit
2
3
/
Outdoor alternating current, over current protection
2
4
4
Communication failure between the IPM and outdoor PCB
2
5
5
Module operated overload (compressor overload protection)
2
6
6
Module low or high voltage
2
7
/
Compressor current sampling circuit fault
2
8
8
Overheat protection for discharge temperature
2
9
9
Malfunction of the DC fan motor
3
0
10
Malfunction of defrost temperature sensor
3
1
11
Suction temperature sensor failure
3
2
12
Ambient temperature sensor failure
3
3
13
Discharge temperature sensor failure
3
4
/
High outdoor suction temperature
3
5
15
Communication failure between the indoor & outdoor unit
3
6
16
Lack of refrigerant or discharging
3
7
17
4-way valve switching failure
3
8
18
Loss of synchronism detection
3
9
/
Position detection circuit fault of compressor
4
0
/
Terminal block temp too high
4
0
20
Indoor thermal overload
4
1
21
Indoor unit overload protection, heating mode only.
4
1
21
Indoor coil frosted
4
2
/
Indoor anti-frosting protection
4
3
23
Module thermal overload
4
4
24
Compressor start failure, over-current
4
5
25
Phase current protection (IPM)
4
6
26
MCU reset
4
7
27
Module current detect circuit malfunction
4
8
28
Liquid pipe sensor failure: Circuit A
4
9
29
Liquid pipe sensor failure: Circuit B
5
0
30
Liquid pipe sensor failure: Circuit C
5
1
31
Liquid pipe sensor failure: Circuit D
5
2
32
Gas pipe sensor failure: Circuit A
5
3
33
Gas pipe sensor failure: Circuit B
5
4
34
Gas pipe sensor failure: Circuit C
5
5
35
Gas pipe sensor failure: Circuit D
5
6
36
Gas pipe sensor failure: Circuit E
5
7
/
Outdoor pipe temperature protection in cooling mode
5
8
38
Malfunction of module temperature sensor momentary power failure detection
5
9
39
Malfunction of condensing temperature sensor
6
0
40
Liquid pipe sensor failure: Circuit E
6
1
41
Toci temperature sensor failure
6
2
42
High Pressure switch open
6
3
43
Low Pressure switch open
6
4
44
System high pressure protection: Overcharged, high condensing temperature or malfunction of fan motor
6
5
45
System low pressure protection: Undercharged, low defrosting temperature, or malfunction of fan motor
6
6
/
Incorrect match between indoor & outdoor
0
1
/
Indoor ambient temperature sensor failure
0
2
/
Indoor coil temperature sensor failure
0
4
/
Indoor PCB EEPROM failure
0
7
/
Communication fault between the indoor and outdoor unit
0
8
/
Communication fault between the controller and Indoor unit
0
12
/
Drain system malfunction
0
13
/
Zero cross signal detected wrong
0
14
/
Indoor fan motor malfunction
Summary of Contents for ASH220NCDWA
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