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    dragonhead08's Avatar
    dragonhead08 Posts: 2, Reputation: 1
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    #1

    Dec 17, 2008, 08:04 PM
    Heat pump won't turn off
    So our heat pump (heater) wouldn't shut off last night. Even after resetting the thermostat. When we tried cycling the switch from hot to cold if refused to turn off still. I ended up having to cut the power to the furnace at the circuit breaker. I saw the sticky for checking if thermostat is broken but that was for if it refused to turn on. Our thermostat is a robert shaw 9620
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Dec 17, 2008, 08:21 PM

    When you turned the thermostat off, did the outdoor unit continue to run or just the indoor fan? You may have a heat relay with fused contacts, keeping the auxiliary heat powered.
    dragonhead08's Avatar
    dragonhead08 Posts: 2, Reputation: 1
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    #3

    Dec 17, 2008, 10:10 PM
    Yea, the outdoor unit turns off but the fan in the ceiling stays on.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #4

    Dec 18, 2008, 04:01 AM

    Does it blow warm or cool? If warm, sequencer or heat relay is stuck. If cool, fan relay is stuck.
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