Sometimes it gives heat, Sometimes it won't
Posted 20 November 2006 - 05:18 PM
anyone have any ideas on what i can replace in there or what is happening.
Posted 21 November 2006 - 01:41 PM
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Posted 24 November 2006 - 06:12 PM
When you hear the sound of the first 'pulse' this is the only time there is a spark, after that combustion is self-sustaining. How soon after ignition does the 'pulse' sound stop? - before of after the main blower comes on. My own Pulse furnace had a plastic 90' fitting cracked where the differential pressure switch hose connects to the exhaust tubing. Make sure you are absolutley sure there are no restrictions or cracks in the tubing or hoses - this includes the condensate drain tubing. Lennox also prefers you to change the air flapper every four years regardless of condition, although my unit is 10 years old and I have never done it. Also check for any possible changes to where the intake/exhaust tubing terminates outside - exhaust could be recirculating with intake air stopping combustion.
you can hear the air chamber blower kick on, and the sound of a pulse heard, but when you hear the click for the spark to come on, nothing happens.
Posted 26 November 2006 - 05:03 PM
the flapps wear to fast
INFO COMES DIRECT FROM LENNOX , ALSO UNABLE TO REDUCE NOISE
PRODUCT // DEFECTIVE
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