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-   -   Unitary Products Group A/C fan does not come on always, nor shut off (https://www.askmehelpdesk.com/showthread.php?t=217663)

  • May 19, 2008, 05:03 PM
    gminar
    Unitary Products Group A/C fan does not come on always, nor shut off
    I have a Unitary Products HVAC home unit and the A/C fan does not always come on when thermo kicks on, even though the condenser is running.
    Sometimes the fan does not shut off when unit is shut off.
    I suspect the control board is TU (bad). It is a 031-01267-001 per the PL.
    Where can these be purchased? Is this the probable cause of this irregular operation? (i.e maybe a sticking relay on the circuit board/control board)?
    Thanks
  • May 20, 2008, 03:23 AM
    hvac1000
    Check all thermostat wiring especially the G wire for the fan blower circuit.
    It could be a relay on the board but good luck finding that relay.
    Boards are expensive so I would make sure all wiring on the board/thermostat wires are good before replacing. I have no idea if you will need a different harness with the new style board. Best to ask them when ordering.

    York, Coleman, Winchester Upgraded Ignition Control Circuit Board (Without Wiring Harness): Best Buy Heating and Air Conditioning

    PartsGuy.com -- 031-01267-001 Control Module

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