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View Full Version : compressor amps mirsi pu-p4yga



andyc425
13-09-2011, 07:30 PM
recently fitted a new contactor on a mitsi mr slim pu-p4yga on r407c, faulted by another engineer.put unit in test mode and contactor erratically pull in and out showing uf fault code which is compressor current overload.I checked windings,3 phase balance.Compressor to earth all ok,compressor starting amps 15, running amps between 4-5 but does anyone no if they are the correct amps for that model ?

Many thanks

install monkey
13-09-2011, 08:11 PM
Is the white wire for the compressor going through the lil ct coil on the outdoor pcb?
The current appears ok so if all is well then the outdoor board will want changing too