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Carrier 24ACA448A0030010 Furnace Door Switch
The furnace door switch is a safety switch which prevents initial fan and gas ignition from starting so as to avoid injuries. It is extremely important that the device is swapped out swiftly if it is causing you problems.
Indications your furnace door switch is going to die
- The door switch appears as though it has been breaking off
- The whole system does not even thing about starting whether the door is off or on
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