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Discharge pressure reading 150 psi and suction reading 70 psi what could cause this problem on a heat pump? this is a r22 system

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  • Bill Long May 11, 2010

    Are you running the unit in heating or cooling and what is the approximate outdoor temperature.

  • jdthefixer May 11, 2010

    The pressures will depend on the outdoor ambient anf indoor load condtions. Is the heat pump operating in the heating or cooling mode? The pressures you list aren't that far off for an R-22 system. What is the specific issue?



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What is the Problem?,
Can you discribe, or give more details about the Problem ?

Posted on Jul 03, 2010

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Need to know the room temp and out side temp but the expansion valve could be sticking open or the compressor could have bad valves hook up hi side hose to true high side port and shut the liquid valve off in the line set in cooling mode make call for unit to come on and as it pumps down the hi side should go up if not the comp is week but if room temp is 85 or higher and out side about same still low on charge the suction will fall when room cools and the expansion valve quits flooding the coil

Posted on May 10, 2009

  • mike bare May 10, 2009

    check the temp on lines from rev valve switch it manually from heat to cool by pulling the wire most are energized in cooling make sure low side Gage is on direct read port not on suction lie because it becomes discharge in heat mode



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