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    moncagua's Avatar
    moncagua Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Mar 22, 2007, 01:53 PM
    Heat pump
    Hello again
    I have a question
    I have a ducane 2 tons heat pump it work fine on cooling but when is switched to heat high discharge pressure goes to over 300 psig and suction pressure goes down to 0 psig and outdoor unit shut off, filter is clean, blower is fine unit runs for about 1 minute
    Thank for any help I can get on this
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Mar 22, 2007, 02:05 PM
    Sounds like a restriction in the outside piston (metering device) If the head pressure went to 300 and the suction stayed aroung 50 or so I would say it is poor indoor airflow.
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
    Uber Member
    		  
    #3

    Mar 22, 2007, 02:06 PM
    You might want to check out what you find by using the following link:

    www.ducanehvac.com/res/pdfs/ac/20407501.pdf
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