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    jspeer22's Avatar
    jspeer22 Posts: 2, Reputation: 1
    New Member
     
    #1

    Jul 12, 2008, 08:25 PM
    High suction line pressure
    Charging a 2ton unit and the suction line pressure is at 90psi and the liquid line is at 175 psi.new line set,no kines,instill filter on both lines.new air handler and coil.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
     
    #2

    Jul 12, 2008, 09:06 PM
    What is your question,,
    Let me ask one,, why did you install a filter on both lines?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #3

    Jul 12, 2008, 11:15 PM
    Possible incorrect metering device.
    jspeer22's Avatar
    jspeer22 Posts: 2, Reputation: 1
    New Member
     
    #4

    Jul 13, 2008, 06:49 AM
    Charging a 2ton unit and the suction line pressure is at 90psi and the liquid line is at 175 psi.new line set,no kines,instill filter on both lines.new air handler and coil.

    The unit had been move from the side of the house to back and the lines had been cut with a hack saw so I was told.I hook up a new line set and added both filters for ins.After install I used nitrogen to check for leaks and then vacuum for 1hour.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #5

    Jul 13, 2008, 07:49 AM
    The valves in the compressor could be weak. You will have to pump it down to check how it pulls down. Noturally we have no idea what the temp is.

    BTW what is your superheat or subcooling on the system running.
    irish_in_pa's Avatar
    irish_in_pa Posts: 3, Reputation: 1
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    #6

    Jul 27, 2010, 02:18 PM

    I have a 3 ton unit with a suction pressure of 110 an a head pressure of 190 it's a 10 yr old unit cap tube evap. What could be the problem bad compressor valves?

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