Question about Superior Lennox Blower Thermal Sensor - BTS
I have a 20 year old Lennox Pulse. It started to make an odd noise so I removed the panel over top of the induced draft motor while it was running. (I out it back on, tightly, of course) Now the motor growls at freakishly high volume. I had a repair guy in and he thinks its fine.
I just can't believe that it goes from not sounding like a lawn mower to sounding like a lawn mower and there's nothing I can do about it.
If it's a pulse furnace most were built with what's called a flapper valve and it is in need of replacement. If 20 years old it also needs to be checked for heat exchanger damage. This will need to be done by trained HVAC tech. There is no way to see inside exchanger on this system and needs to be done on table testing. This furnace at one time had a problem with heat exchangers and Lennox subcontracted this out to a company that did the liners wrong. Customers had no way of knowing there was a split in the heat exchanger until it was too late. And yes there was a warrning sent out to all people who owned one to have it checked. I CAN'T even remember the last time I saw a pulse furnace after that. I've been in the HVAC field for 30 years now. Hope this helped you.
Posted on Nov 27, 2012
When you tighted it it very well could have done damage to the motor or you could have it off kilter 1 of the 2
Posted on Feb 06, 2009
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Posted on Jan 02, 2017
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