Lennox Whisperheat that will run for a minute or two then shut off.


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Old 12-01-11, 01:33 PM
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Exclamation Lennox Whisperheat that will run for a minute or two then shut off.

We are brand new home owners and within the last few days (the coldest days so far) the furnace has started acting up. Would wake up in the middle of the night and it would be 50F in the house. Thermostat is set for 68. We would have to manually reset the furnace and it would run. Came home from work with the same problem. Took the door off of the furnace and noticed the damper does not open the whole way! If I lightly move it open (only needs to open a centimeter or two more) it will run for a few minutes, then shut back off! Its freezing here in Western PA! Any help is appreciated.

Lennox Whisperheat 62003/4-100-1 (gas furnace)

Thank you!
 
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Old 12-01-11, 03:00 PM
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before you try to do ANY repairs on that furnace the heat exchanger needs to be examined by a professional. It is known to develop large cracks at the first bend in the HE.
 
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Old 12-02-11, 05:02 AM
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Actually the furnace was inspected before they would hook up our gas service last month, and it passed.
 
 

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