Mitsubishi Electric PURY-P200 Service Handbook page 136

Checking code Meaning, detecting method
4240 Overload When the output current (lac)
4245 abnormality > Imax (Arms) or THHS > 90˚C
is detected for 10 minutes in a
row during the inverter operation.
Type P200
Type P250
Type P300
Type P350
Type P400
Type P450
Type P500
Type P550
Type P600
Type P650
IPM IPM error signal detected
4250
abnomality
4255
(Error details
No.101)
ACCT Overcurrent break
overcurrent (94Apeak or 35Arms) de-tected
abnormality by the current sensor.
(Error details
No.102)
DCCT
overcurrent
abnormality
(Error details
No.103)
ACCT
overcurrent
abnormality
(Error details
No.106, 107)
IPM IPM short damage or grounding
short/grounding at the load side detected just
fault before starting the inverter.
(Error details
No.104)
✻
For the check code on the inverter, refer to
Cause
(1) Air passage short cycle.
(2) Air passage blockage.
Imax
(3) Power supply.
27 Arms
27 Arms
(4) Wiring defect.
27 Arms
(5) THHS failure.
27 Arms
27 Arms
(6) INV board fan output failure.
27 Arms
27 Arms
27 Arms
27 Arms
27 Arms
(7) Cooling fan failure.
(8) Current sensor (ACCT)
failure.
(9) Inverter circuit failure.
(10) Compressor failure.
<In the case of 4250>
(1) Inverter output related.
(2) Same as 4230 error.
<In the case of 4255>
(1) Grounding fault of fan motor.
(2) FAN board failure.
(1) Inverter output related.
<In the case of 4250>
(1) Grounding fault of
compressor.
(2) Inverter output related.
<In the case of 4255>
(1) Grounding fault of fan motor.
(2) FAN board failure.
" "
7. Inverter and compressor
- 133 -
Checking method & Countermeasure
Ensure that a short cycle has not
occurred at the unit fan exhaust.
Check to make sure the air
passage of the heat sink cooling
is not blocked.
Check if the power supply
voltage
Check the cooling fan wiring.
Check the THHS sensor
resistance.
Ensure that the heat sink
temperature is 55˚C or more and
that 220~240V is applied to the
inverter PCB connector CNFAN
when the inverter is on.
Check the cooling fan operation
under the above operating
conditions.
Refer to 9.[4].7.(4)
"Current sensor ACCT"
Refer to 9.[4].7.(2).[4]
"Inverter damage check"
Check that the compressor has
not overheated during operation.
→ Check the refrigerant circuit
(oil return section). Replace
the compressor if there are no
problems with the refrigerant
circuit.
Same as 4230 error
Refer to 9.[4].7.(2).[6]
Refer to 9.[4].7.(2).[7]
9.[4].7.(2) inverter output
related trouble processing
Refer to [1] - [5].
Refer to 9.[4].7.(2)
Refer to 9.[4].7.(2).[6]
Refer to 9.[4].7.(2).[7]
"
in the section [4] Troubleshooting of principal parts
342V.
"