Question about Ruud UAMB Air Conditioner
When unit goes into defrost the compressor sounds like liquid going back into compressor . Makes very loud knocking noise. Has scroll compressor with 410A freon.Does find except when defrosting.
Well you may want to have a tech come out and check the freon level, but mostly when going into defrost, some units make alot of noise, the freon is reversed in the unit by way of the reversing valve, it makes a whooshing sound like freon is draining off, as far as the knocking noise, could be as I said in the beginning, might be low on freon, but it could be that, this particular unit does this, I have had units make some really strange noises in the past but functioned perfectly, hope this helped, please let us know, thanks again,
Posted on Jan 24, 2009
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Posted on Jan 02, 2017
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