I have a new Lennox G61Mp-48C furnace. It is a 2-spped unit. If it has been running at high speed and the thermostat has reached it's setpoint, aand the motor is switching form high to low speed we hear a bang much like ductwork flexing but it seems to be coming from the furnace cabinet and not the ductwork. Ideas?
yup... call the installer
hell yes I got ideas.
Some of them are even good ones!
Well it's pretty simple, find the duct thats banging and support it.
-Canadian Heat
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Did you not read his original post?
He stated "seems to be coming from the furnace cabinet and not the ductwork."
You're forgetting. The simple minded Canuck fucker cant read nor understand English. Bubba
my neighbors duck is banging my other neighbors goose
you wanna support it?
LMAO
There's the first mistake.....it's Lennox
Well hell. They only have one letter in their alphabet, EH?
Uh-oh, looks like I'll have to give up my name to a much more deserving guy- danger the canuck. I'm still the dim wit, but danger really takes the cake.
Bob
we already do; its called welfare.
I am not sure who posted message anyway from what I can see I would check mounting of the motor for that particular application motor should be mounted on springs to absorb shock on start and when costing down to a lower speed don't forget when motor switches to a lower speed it is like you would be applying breaks on you car so the motor should be on springs and springs should be able to take stress (shock) equally in both direction note I am using word "should" because I have no idea what you have or your furnace look like Good luck from Dido
(sorry gofish)
posted for all of us...
Got pix? BWAAAAAA I loved it!
"AKS" wrote
Note to self....next time changing motor in furnace, stop at auto supply store and get shock absorbers for it.....
It's pretty obvious that you have no idea....
I'll second that!
I'd have to guess that a piece of metal has been flexed by the energy application of the fan blower. When the energy application is reduced, the metal flexes (suddenly) to a more relaxed state.
Bob_Loblaw posted for all of us...
I go to NAPA and I've never seen a chart for Carrier, Trane, Lummox, I guess one must ask the counter person. I prefer Gabrials over Monroes as they have tougher welds.
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