Update 9/15/2011: Almost exactly one month after the TXV was replaced, the problem started again, and is consistently happening each morning and evening (after the unit has been off for awhile). And we had such high hopes...
See update above. It appears to have been fixed by replacing a faulty TXV in the indoor blower unit. This is not a heat pump system. The crankcase heater was one of the first things checked, and appears to have been functioning correctly.
@videoplasm Ahh OK. I knew it had to be liquid in that compressor. Liquid is usually the only thing that would make a scroll compressor sound like that on start up. Thanks for the update.
The noise seems to quiet down once the fan gets up to speed. It could be the compressor working against the head pressure, since the fan isn't running, but it wouldn't have been running anywhere near long enough to build hear pressure.
On the other hand, the compressor could be full of liquid on start up. This can be solved by adding a crankcase heater to the compressor.
i am not a ac person but this could very well be a open start or run cap across the compressor. This was a feb. post but your bill should go down significantly once this
check the compressor
amysel100 5 months ago
Update 9/15/2011: Almost exactly one month after the TXV was replaced, the problem started again, and is consistently happening each morning and evening (after the unit has been off for awhile). And we had such high hopes...
videoplasm 5 months ago
I just dont know, why I gave a like on this video. :D
NsmB1PrO 6 months ago
See update above. It appears to have been fixed by replacing a faulty TXV in the indoor blower unit. This is not a heat pump system. The crankcase heater was one of the first things checked, and appears to have been functioning correctly.
videoplasm 6 months ago
@videoplasm Ahh OK. I knew it had to be liquid in that compressor. Liquid is usually the only thing that would make a scroll compressor sound like that on start up. Thanks for the update.
84randomdude 6 months ago
@84ramdomdude if it's a heat pump it guid just be a RE problem,
Hv1245 6 months ago
The noise seems to quiet down once the fan gets up to speed. It could be the compressor working against the head pressure, since the fan isn't running, but it wouldn't have been running anywhere near long enough to build hear pressure.
On the other hand, the compressor could be full of liquid on start up. This can be solved by adding a crankcase heater to the compressor.
84randomdude 6 months ago
i am not a ac person but this could very well be a open start or run cap across the compressor. This was a feb. post but your bill should go down significantly once this
problem is fixed.
troubleshooter321 7 months ago