I have a Nortron Model 21b20 electric furnace. It has started to run steady heat all the time. Tried changing thermostats -did not help. Had to shut it off at the fuse panel. What could be wrong?
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check out the heat limiters as each stage -
I agree, sounds like an issue typically caused by the heat relay. You should inspect it to make sure there's no damage.A fool-proof furnace repair manual...Comment
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Thank you, Makes sense. I will check that first.Comment
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs....
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