The squirrel cage is tight on the motor shaft, but could be a bit off center of the flame tube. Would this cause the heater to rumble when it is ignited?
The squirrel cage is tight on the motor shaft, but could be a bit off center of the flame tube. Would this cause the heater to rumble when it is ignited?
Are you referring to the indoor air circulating blower, or the combustion draft inducer (if present/equipped)? Brand/model# of unit would be helpful. If the rumbling starts after the circulating blower starts, heat exchanger leakage/failure is likely.
Hello KC13, Thanks for responding. I believe the combustion draft inducer is the one. The heater is a York model #UFO85D10. Someone delivered some bad fuel and this started the whole thing. I cleaned the heater, removed the pump motor and cage and cleaned that. I had another cage in much better condition, so I replaced the one that was on the pump motor. It rumbles and sputters somewhat, at start-up, then seems to work itself out. I thought I may have that draft inducer(cage) too far left or right on the shaft and it may be causing the flame to sound strange. Hope this makes some sense. I am more a car mechanic than heater mechanic and only involved in this due to current economics. Thanks, Pat
If this is a fuel oil furnace, the "bad fuel" may have fouled the burner nozzle. If a barometric damper is present, peek inside the flue with the burner running - use a flashlight. If smoke is visible in the flue, the fuel may not be properly atomizing.
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