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  1. AHU model# FK4CNF003 Serial# 3398A31753...

    AHU model# FK4CNF003 Serial# 3398A31753
    Condenser model# 38YDA036300 Serial# 3698E03671
    Relay is on ahu control board.
  2. I have replaced the thermostat, the air handler...

    I have replaced the thermostat, the air handler curcuit board, the heat sequencer, the expansion valve, the flex return duct connecting the return. Obviously all these things were not because the...
  3. The thermostat satisfies. The outdoor unit still...

    The thermostat satisfies. The outdoor unit still runs with the indoor blower running. I had the thermostat set on 65. Let it run and cycle 3 times. Shut off and came on exactly like it was suppose...
  4. Carrier 38YDA036300 Heatpump continue to heat when satisfied

    I am working on a carrier heatpump that continues to heat when thermostat is satisfied. This does not happen all the time. It works perfect for a few days and then it will stick and continue to heat....
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