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  1. Residential HVAC Forum
    Working on a Goodman heat- pump with gas furnace set up on dual fuel with board and outdoor t-stat.No heat call and find heat pump to be out on low pressure,find leak,fix leak,pull vacume,weigh in 5lb of 22 and go to turn on unit to put in the remaining 8lb of the total 13lb and can never get...
  2. General HVAC Discussion
    Hooking up a heat pump with aux backup, and also have a oil fired boiler. Have a pro 8000 with fossil fuel kit. Would like to lock out heat pump at 30F. Terminal connections??
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