Quote:
Originally Posted by billybek
Scroll compressor have far fewer moving parts inside to fail compared to a reciprocating compressor. Wonder what it is about the scroll Honda is using for that application that makes it so unreliable?
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IMHO, it's a lot of things, but I don't think you can pin the blame totally on Sanden. In his case it's a TRSE09 compressor. His system is 18oz of refrigerant and 4.5-5oz oil. If you have much more oil, it won't cool. However, I don't there's enough oil to lubricate the compressor, specifically the crankshaft needle bearings. I think they wear first, affecting the rotation of crankshaft driving the oscillating scroll. Once the crank shaft no longer has a fixed rotation, the oscillating scroll will also change its pattern and will begin whacking the fixed scroll. All that metal causes a restriction, the desiccate bag and header on the condenser trap some of the oil, but still will allow some oil and refrigerant by, and with every cycle, the compressor receives less and less oil. Then she blows.
Failures can be very violent, I've seen some pretty large holes in the cases on CRV's.