Error Code And Preliminary Error Code Lists - Mitsubishi Electric HP120TNU-A Service Handbook

[7-1 Error Code and Preliminary Error Code Lists ]

7 Troubleshooting Using Error Codes
7-1

Error Code and Preliminary Error Code Lists

Error
Prelimi-
(prelim-
Error nary
inary)
Code error
detail
code
code
1
4300
5
0403 4305
6
4306
(Note)
0404 - -
1102 1202 -
1301 - -
1302 1402 -
1500 1600 -
- 1605 -
2500 - -
2502 - -
2503 - -
2600 - -
2601 - -
3121 - -
3511 3611 -
3512 3612 -
4102 4152 -
4106 - -
4109 - -
4114 - -
4116 - -
4121 4171
4124 -
[0]
[108]
[109]
[110]
4220 4320
4225 4325
[111]
4226 4326
(Note) (Note)
[112]
[123]
[129]
[131]
4230 4330
4235 4335 [125]
4236 4336
HWE18220_GB
Error code definition
Serial communication error/Panel communication
error
Indoor unit EEPROM abnormality
Discharge temperature fault
Low pressure fault
High pressure fault
Refrigerant overcharge
Preliminary suction pressure fault
Drain sensor submergence
Drain pump fault
Drain sensor (Thd) fault
Water leakage
Water supply cutoff
Out-of-range outside air temperature
Refrigerant overcooling
Locked cooling fan
Open phase
Transmission power supply fault
Indoor unit fan operation error
Indoor unit fan motor error
RPM error/Motor error
Function setting error
Electric system not operate due to damper abnor-
mality
Backup operation
Abnormal bus voltage drop
Abnormal bus voltage rise
BUS voltage error
Logic error
Logic error
Voltage boost control error
Control power-supply fault
Low bus voltage at startup
Heatsink overheat protection
Searched unit
Notes
O O (page 6)
O (page 7)
O (page 8)
O (page 9)
O (page 10)
O (page 11)
O
O (page 12)
O O (page 14)
O O (page 16)
O (page 17)
O (page 17)
O (page 18)
O (page 19)
O (page 20)
O (page 21)
O (page 22)
O (page 22)
O (page 23)
O O (page 23)
O (page 23)
O (page 24)
O
O (page 25)
O (page 27)
O (page 27)
O (page 28)
O (page 28)
O (page 28)
O (page 29)
O (page 29)
O (page 30)
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