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Old 01-25-2004, 01:44 PM   #1
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Angry furnace shut down

I have a 1974 Airstream with a suburban N22 furnace that wont shut down when it reaches the proper temp.After taking the cover off the thermostat I noticed the points were still closed.If I tap the thermostat it opens up and cycles properly then shuts down the way it's suppose to.Does it sound like I need to replace the thermostat or could it be some other problem.

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Old 01-25-2004, 02:24 PM   #2
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Try and clean the points with emery cloth first.

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Old 01-25-2004, 07:00 PM   #3
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Test the furnace by disconnecting the termostat wires and connecting them together. This should make the furnace run constantly until you disconnect the wires again.That will duplicate the job the themostat does. If it works properly (manuallly) and shuts off after cooldown then you 've got a bad thermostat.
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