Overload Protection - Mitsubishi Electric PURY-(E)P200 Service Handbook

[ IX Troubleshooting ]
1. Error Code
4240

Overload protection

2. Error definition and error detection method
If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL " is continuously detected for 10 minutes or more during inverter
operation.
Imax(Arms)
Model
P200, P250 19
P300 - P400 27
3. Cause, check method and remedy
(1) Air passage blockage
(2) Power supply environment
(3) Inverter failure
(4) Current sensor (ACCT) failure
(5) Compressor failure
Refer to section - 7 - "Inverter" under part [4] "Trouble shooting principal parts" for error codes related to the
inverter.(page 271)
HWE07130
Cause Check method and remedy
Check that the heat sink cooling air passage is not blocked
Power supply voltage is 188 V or above.
Refer to 9 [4] - 7 -.
Refer to 9 [4] - 7 -(4).
Check that the compressor has not overheated during operation.
-> Check the refrigerant circuit (oil return section).
Refer to 9 [4] - 7 - (2)[2].
- 197 -
GB