I have 2.5 Goodman heat pump, 3 yrs old, the sucsion pressure is 90 PSI, the discharge pressure is 180 psi. I am told the I have a bad compressor valve. Please, tell me how can I fix a bad compressor valve?
Re: I have 2.5 Goodman heat pump, 3 yrs old, the sucsion...
The piston is too large. Have a reputable heating and air technician install the proper size piston and this will correct the problem. Cost should be 150.00.
No, the piston is located in the air handler. The piston is a the metering device for the refrigerant that takes the refrigerant from a high pressure liquid to a low pressure saturated gas.No, the piston is located in the air handler. The piston is a the metering device for the refrigerant that takes the refrigerant from a high pressure liquid to a low pressure saturated gas.
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With such limited information, if everthing else is operating normally then the system has the wrong piston installed in the air handler. A smaller piston needs to be installed.
90 psi for 134a is to high, should be around 40 psi. the 140 that you are seeing is the test pressures for that side of the system and does not reflect operation pressures. sounds like it is over charged. hope this helps.
adjust your pressure switch on your compressor .remove the cap and turn the screw clockwise to increase and counterclockwise decrease.turn the screw counterclockwise a bit and release some air till the compressor start pumping.then just before to reach 120 psi turn counterclockwise to stop the compressor at 120.then release some air again till it cuts in again and look at what pressure it will stop.keep going that way till you get your 120 psi.cut in should be around 90 psi(30 psi differential)depending what kind of pump you have (if the pump can handle 150 psi )you can adjust it to cut in at 120 and cut off at 150 and install a pressure regulator adjusted to 115 to 120 and get a nice steady pressure going to your nail gun.(the best way to do it!!!)
Sounds like reversing valve is stuck or metering device or check valve is stuck open. If it is a scroll compressor on 3 phase you may need to reverse 2 motor leads. try tapping reversing valve with rubber mallet when running. This may have done in last compressor by sending discharge gas to suction side.
check the true psi with the line psi to see if same if psi is good in cooling 225 hi and 70 low on 80'day then compressor is fine and i would start checking for temp difference on the reversing valve sometimes this will cause high suction or high discharge psi shift it manually with by energising it be cooling or heating then pull wire and see how it shifts if shifts good then txv on out door unit could be bad what is the psi in heating on the discharge line going to the indoor unit? most prv's are set at about 350 psi r22 as for suction line size its only hot gas in hp mode os no problem their shows in cooling mode as low suction psi ..hope this helps some also make sure indoor coil is clean!....thanks & rate me
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