4350 4250 ERROR CODES MITSUBISHI CITY MULTI

[@grandtrunk7087]

You always make great vids for us. 4250 is compressor over current error. It’s either an IPM or a Compressor issue. When you disconnect the compressor on City Multi you have to disable the current sensor using the dip switches…then put system into test run from either mtool or OC dip switches. This will allow the fans to run continuously without stopping.. if the Fans stop while testing then the board is faulty… if the fans run and VAC is balanced then the compressor is bad

[@D2DNYAC]

Thanks for watching my friend

[@RJMaker]

Thanks for the video.. I'll just add.. when checking compressor power output from the IPM/Power Board you want to look for balanced AC voltage across all 3 outputs within 10%. Depending on the OC, SW3-1 = ON may give you more time for testing output.

[@D2DNYAC]

😍😍💪👍 thank you

[@mannyfresh8504]

Whats a likely cause of a compressor being shorted to ground? Thanks for sharing your real world experiences.

[@D2DNYAC]

Acid inside the system and electrical power supply issues primarily that leads to the windings being over heated

[@Jobychayan4085]

This unit m net supporting that 12 v right

[@D2DNYAC]

What 12 volts?

[@Jobychayan4085]

@@D2DNYAC communication from outdoor to indoor 12v dc communication right or24v

[@RJMaker]

@@Jobychayan4085 ~30vdc

[@grandtrunk7087]

@@Jobychayan4085Mnet from Outdoor/Indoor com is 29vdc,
Mnet for Central Control is 24vdc