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Posted by bc on November 16th, 2000 03:20 PM
In reply to Lennox Furnace by Jeff on November 15th, 2000 07:44 PM [Go to top of thread]

sounds like an intermittant switch or relay or a bad thermostat. There are two terminals in the typical 4 wire thermostat that if you short accross them and it goes on and off like it is supposed to then it is the thermostat. Otherwise sounds like a service call.

The november issue of family handyman has an excellent article on cleaning your own furnace. It could be a dirty ignitor of in that area but be careful cause one type can be broke by touch or jarring.

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