List Of Troubles - Mitsubishi Heavy Industries SRK20ZJX-S Service Manual

2.2.2 Troubleshooting flow
(1)

List of troubles

No. Remote controller display
1 None Operates but does not cool.
2 None Operates but does not heat.
3 None Earth leakage breaker activated
4 None Excessive noise/vibration (1/3)
5 None Excessive noise/vibration (2/3)
6 None Excessive noise/vibration (3/3)
7 None Louver motor failure
8 None Power supply system error (Power supply to indoor control PCB)
9 None Power supply system error (Power supply to remote controller)
10 INSPECT I/U INSPECT I/U (When 1 or 2 remote controllers are connected)
11 INSPECT I/U INSPECT I/U (Connection of 3 units or more remote controllers)
WAIT
12 Communication error at initial operation
13 E1 Remote controller communication circuit error
14 E5 Communication error during operation
15 E6 Indoor heat exchanger temperature thermistor anomaly
16 E7 Return air temperature thermistor anomaly
17 E8 Heating overload operation
18 E9 Drain trouble
19 E10 Excessive number of connected indoor units (more than 17 units) by controlling with one remote controller
20 E16 Indoor fan motor anomaly
21 E19 Indoor unit operation check, drain motor check setting error
22 E28 Remote controller temperature thermistor anomaly
23 E35 Cooling overload operation
24 E36 Discharge pipe temperature error
25 E37 Outdoor heat exchanger temperature sensor anomaly
26 E38 Outdoor air temperature sensor anomaly
27 E39 Discharge pipe temperature sensor anomaly
28 E42 Current cut
29 E45 Outdoor sub PCB communication error
30 E47 Active filter voltage error
31 E48 Outdoor fan motor anomaly
32 E51 Power transistor anomaly
33 E53 Suction pipe temperature error
34 E57 Insufficient refrigerant amount or detection of service valve closure
35 E58 Current safe stop
36 E59 Compressor startup failure
37 E60 Anomalous compressor rotor lock
Description of trouble
75
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'10 • SCM-SM-094
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