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Thread: 4210 error mitsu
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20-12-2008, 06:38 PM #1
4210 error mitsu
hi
tried starting up a vrf system today after fixing a leak.. compressor was giving off a hummming noise, with no sign of pressure change, displayed a 42 10 error after a period of time.....checked voltage to compressor terminalsd and found all evenish, apart from a differentail of 8volts on 1 phase...checked current off each phase..2 x phases had 16amps and 1 phase with the slight differential absorbing nothing....checked windings for ballance etc...all ok, any ideas whats happening????
rgrds phil (bit pissed writing this since were in a recession in all) thanks
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20-12-2008, 07:41 PM #2
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Re: 4210 error mitsu
Last edited by nike123; 20-12-2008 at 07:51 PM.
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20-12-2008, 09:09 PM #3
Re: 4210 error mitsu
Could have been compressor warm up function.
outside air on TH6 sensor is less than about 10 deg C when 3ph power up the outdoor control circuit board considers that the compressor must be cold & crankcase heater not had time to warm up compressor & boil off any liquid refrigerant in the compressor shell.
So it goes for comp warm up = lots of amps into the windings but no rotation just lots of humming noise.
4210 = overcurrent.
After warm up mode check power supply to comp with comp disconnected & confirm correct ballanced 3ph output from inverter.
If the system has been running SOG then comp could be damaged.
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21-12-2008, 11:11 AM #4
Re: 4210 error mitsu
thanks for replies, i will take a look in the morning..
rgrds phil
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