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Thread: Msh-ga50vb trouble
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22-10-2014, 06:39 PM #1
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Msh-ga50vb trouble
Hi guys, i was working on the above unit today and found the coil freezing over. When the unit was switched from cooling to off the outdoor would continue to pump cold gas in resulting in the unit freezing up. And wouldn't switch to heating mode every time i changed setting. Also am i right in saying that if the indoor is off i should have no signal voltage to the outdoor???
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22-10-2014, 09:06 PM #2
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Re: Msh-ga50vb trouble
Don't know the unit but has the 'go' signal relay welded on?
Brian - Newton Abbot, Devon, UK
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22-10-2014, 09:12 PM #3
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Re: Msh-ga50vb trouble
Its a mitsubishi electric split type unit.
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22-11-2014, 10:23 PM #4
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Re: Msh-ga50vb trouble
http://www.aircon-nara.narod.ru/Mits...50_60_80VB.pdf
52c contactor in outdoor welded - as brian guessed, take the top lid off the condenser and look at the black thing next to the capacitor- its a non inverter unit with a 12v dc signal on 1,2 terminals, 1 an 3 for reversing valve signal (heating)
