Mitsubishi Electric HP120TNU-A Service Handbook page 165

[7-1 Error Code and Preliminary Error Code Lists ]
Error
Prelimi-
(prelim-
Error nary
inary)
Code error
detail
code
code
4240
4245 4340 -
4246
[0]
[101]
[104]
4250 4350
[105]
4255 4355
[106]
4256 4356
(Note) (Note)
[107]
[121]
[122]
4250 4350 [128]
4255 4355
[137]
4256 4356
4260 - -
5101 1202 -
5102 1217 -
5103 1205 00
5104 1202 -
5105 1204 -
5107 1221 -
5115 1203 -
2
- chapter 7
Error code definition
Overload protection
Backup operation
IPM error
Short-circuited IPM/Ground fault
Overcurrent error due to short-circuited motor
Instantaneous overcurrent (S/W detection)
Overcurrent (effective value)(S/W detection)
DCL overcurrent breaker error (hardware detec-
tion)
DCL overcurrent breaker error (software detection)
DCL overcurrent breaker error (hardware detec-
tion)
Step-out fault
Heatsink overheat protection at startup
Return air temperature
(TH21)
Temperature sensor
fault
OA processing unit inlet
temperature (TH4)
Indoor unit pipe tempera-
ture (TH22)
Temperature sensor
fault
OA processing unit pipe
temperature (TH2)
Indoor unit gas-side pipe
temperature (TH23)
OA processing unit gas-
Temperature sensor
side pipe temperature
fault
(TH3)
Pipe temperature at heat
exchanger outlet (TH3)
OA processing unit intake
air temperature (TH1)
Temperature sensor Outside temperature
fault (TH24)
Outdoor unit discharge
temperature (TH4)
Temperature sensor Accumulator inlet tempera-
fault ture (TH5)
Temperature sensor
Outside temperature (TH7)
fault
Temperature sensor Compressor shell bottom
fault (Outdoor unit) temperature (TH15)
Searched unit
Notes
O (page 31)
O
O (page 32)
O (page 33)
O (page 34)
O (page 35)
O (page 35)
O (page 36)
O (page 36)
O (page 36)
O (page 36)
O (page 37)
O (page 38)
O (page 38)
O (page 38)
O (page 38)
O (page 38)
O (page 38)
O (page 39)
O (page 38)
(page 38)
Detectable
O only by the All-
Fresh type in-
door units
O (page 39)
O (page 39)
O (page 39)
O (page 39)
HWE18220_GB