Mitsubishi Electric PUHY-HP72 Service Handbook page 123

[7-1 Error Code and Preliminary Error Code Lists ]
Error
Prelimi-
(prelim-
Error nary
inary)
Code error
detail
code
code
4230 4330
4235 4335 [125]
4236 4336
4240
4245 4340 -
4246
[0]
[101]
[104]
4250 4350
[105]
4255 4355
4256 4356
[106]
(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 -
2
- chapter 7
Error code definition
Heatsink overheat protection
Overload protection (YNU)
Overload protection (TNU)
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 error (hardware detection)
DCL overcurrent error (software detection)
DCL overcurrent error (hardware detection)
Motor synchronization loss
Heatsink overheat protection at startup
Return air temperature
(TH21)
Temperature sensor fault
OA processing unit inlet
temperature (TH4)
Indoor unit pipe tempera-
ture (TH22)
OA processing unit pipe
Temperature sensor fault
temperature (TH2)
HIC bypass circuit outlet
temperature (TH2)
Indoor unit gas-side pipe
temperature (TH23)
OA processing unit gas-side
Temperature sensor fault
pipe temperature (TH3)
Pipe temperature at heatex-
changer outlet (TH3)
OA processing unit intake
air temperature (TH1)
Outside temperature
Temperature sensor fault
(TH24)
Outdoor unit discharge tem-
perature (TH4)
Accumulator inlet tempera-
Temperature sensor fault
ture (TH5)
Searched unit
Notes
O (page 30)
O (page 31)
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 39)
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)
HWE18240_GB