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  1. 06-24-2005, 01:29 PM #1
    georgesouthcarolina
    georgesouthcarolina is offline Regular Guest
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    HVAC guy still here and cannot get the air handler on zone system to shut off even when new board and the thermostats are disconnected. Any idea?
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  2. 06-24-2005, 02:46 PM #2
    trgams
    trgams is offline Regular Guest
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    Blower relay or blower board bad...? Is someone looking over my shoulder?!?!
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  3. 06-24-2005, 02:56 PM #3
    sean88
    sean88 is offline Professional Member
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    Give the guy a break. It's a short between R and G.

    Disconnect R and G from unit and ohm out until you find short.
    Sean Cantrell
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  4. 06-24-2005, 06:38 PM #4
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    beenthere
    beenthere is offline Global Moderator
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    If he disconnects the green wire from the G terminal, and the fan still runs.

    Then if its a heat pump, check to see if the limit is open.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?
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  5. 06-24-2005, 07:23 PM #5
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    Swampfox
    Swampfox is offline Professional Member*
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    Find a tech who knows how to troubleshoot a simple low voltage problem, or possibly a stuck contact on a relay
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  6. 06-24-2005, 07:43 PM #6
    georgesouthcarolina
    georgesouthcarolina is offline Regular Guest
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    Turns out there was a small black U shaped wire laying at the botton below the interior board in the unit. Some kind of relay that had fell out. He put both ends of that in and everything works works!
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  7. 06-24-2005, 08:01 PM #7
    tinknocker service tech's Avatar
    tinknocker service tech
    tinknocker service tech is offline Professional Member*
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    if it is electric airhandler wigth heaters i think the sequencer is stuck and not turning fan off
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