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  1. Residential HVAC Forum
    Have a Bryant HP unit that is pulling itself down to almost a 5 psig both on the Head side along with the suction side. At this time low pressure cut out shuts unit off. Not sure where to Go!!!!
    head low suction/
  2. General HVAC Discussion
    I installed a new 410a complete system with new Orfice coil and new lineset. 70 degrees on install date and initial start up. Suction pressure was 110 and high side of 280. It ran for about 15 minutes. I added a little freon and the high side shot up to 425. I immediately thought I had a...
    410a fluctuating head high pressure
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