Heat Pumps and Electric Heating - Voltage sag/noise from Carrier Heat Pump
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BH Bio
02-08-09, 06:32 PM
I have a Carrier heat pump model #38YXA048300 that is going on 9 years old.
It seems to work fine except that it is louder than it was originally and it appears to be causing voltage sags or instanteous voltage drops occasionally during the day. Most of the time there are no flickering of the lites, but about twice a day the lites will flicker and my backup battery on my computer and tv will momentarily switch on and off.
My local repairperson said I should replace the compressor for $1500 to lower the noise level. As to the voltage sag the local utility has checked the lines and they are ok. So they say the likely source is the heat pump/compressor.
Will the replacement compressor for the model heat pump that I have be quieter than the current one? Will it reduce the voltage sags in the house? Is $1500 a reasonable price for a compressor?
It seems to work fine except that it is louder than it was originally and it appears to be causing voltage sags or instanteous voltage drops occasionally during the day. Most of the time there are no flickering of the lites, but about twice a day the lites will flicker and my backup battery on my computer and tv will momentarily switch on and off.
My local repairperson said I should replace the compressor for $1500 to lower the noise level. As to the voltage sag the local utility has checked the lines and they are ok. So they say the likely source is the heat pump/compressor.
Will the replacement compressor for the model heat pump that I have be quieter than the current one? Will it reduce the voltage sags in the house? Is $1500 a reasonable price for a compressor?
dac122
02-09-09, 07:07 AM
From my years of reliability testing for that company, abnormally high current draw (2x,3x,4x, etc.) on a compressor at steady-state was a dead giveaway of a bad compressor. I don't recall if the inductive load during startup of a bad compressor was far beyond the normal draw, but if so it could easily cause a voltage sag.
Instead of guessing get a tech over there with his amp meter clamp and have him monitor the current draw on the unit to find the real answer. He needs to check startup and also steady-state.
Instead of guessing get a tech over there with his amp meter clamp and have him monitor the current draw on the unit to find the real answer. He needs to check startup and also steady-state.