Learn ALOT more about "Superheat" and "Subcooling" in relation to air conditioning.
When you have a good understanding of these concepts, then you will be able to quickly diagnose TXV and many other refrigeration problems.
TECH NOTE : In regards to "SPORLAN" txv's.
The POWERHEAD's tend to rust out and loose their "sensing" charge(This does not mean that any r-22 or r-410a refrigerant has gotten out of the system, because these two parts are not connected so system pressure can't leak out with a powerhead leak.) What results is either a low or very low suction pressure (for no good reason) or a total pumpdown condition. The powerheads can be replaced very quickly at not much cost, but you need a special super skinny 'pipe wrench' used for sink repairs :> I ALWAYs insulate the new powerheads with corktape or rubbatex to prevent the next one from rusting out.Last edited on Sat Dec 26th, 2009 12:32 am by ACtechGUY
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Don't know much. But learned early on, once you let the smoke out of a something electrical, you can never put it back in!!
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