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  1. #40
    Join Date
    Mar 2012
    Location
    Sandy Springs ,Ga
    Posts
    12
    i have seen pump down systems that utilize a relay that is energized by out side of compressor contactor , this is done to prevent heaters from coming on during defrost , which creates high current draw and can cause breaker to trip on single units . as far as pump down goes . low psi control should be set at approx 5psi . As
    others have mentioned use gauges to verify . the schematic supplied should help out ... if none available trace wires these systems are usually very simple .

  2. #41
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    How about billing the customer for extra time cause you have to pull out your cell to ask HVAC Talk How to fix it ?

  3. #42
    Join Date
    Jan 2010
    Posts
    6,315
    Quote Originally Posted by OldSchoolMech View Post
    How about billing the customer for extra time cause you have to pull out your cell to ask HVAC Talk How to fix it ?

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