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licencetochill
13-10-2010, 02:45 AM
Hi guys, I have a daikin rxd71jvea unit that is putting out a "main circut over voltage or low voltage" fault.. Input to unit is 230v and fine. any ideas? Cheers
Brian_UK
13-10-2010, 09:32 PM
Is the fault code that you have U2?

Have you followed the fault finding procedure from the service manual?
brunstar
17-10-2010, 02:15 AM
it sounds like you may have a board fault on that unit, check the compressor and fan motor, make sure there is no visual signs of burning on the outdoor boards.
james10
17-10-2010, 07:46 PM
it sounds like you may have a board fault on that unit, check the compressor and fan motor, make sure there is no visual signs of burning on the outdoor boards.
as brunstsar says the pcb's going faulty can cause this fault