Quote:
Originally Posted by NPDrifter
Thanks for the reply OB, the exhaust temp doesn't seem that hot but still more than you can hold your hand over. I will try and clean the orifice as I didn't do that yet and also check on the other suggestions you gave. How would you go about cleaning the heat exchanger? Does that require it be dismantled and cleaned that way?
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Orifice...no poking anything thru it or using high air pressure to
blow thru it---that will damage the orifice
Soak in alcohol then air dry
Exhaust should be too hot to hold hand over Right AT the port
2-3 inches away should be warm air
IF VERY Hot....heat is not transferring
Heat Exchanger cleaning'
YES furnace has to be disassembled exchanger pulled from cabinet and then can be washed out
New gaskets required also
**This is LAST Resort!!
Orifice...Low LP Pressure are more likely culprit for under firing