I am not sure if it is the motor that circulates the air, but it is on 24/7. There is a plug for the air filter which when I unplug it, the fan still runs. The only way to shut off the fan is by a switch that is located on the outside, but that turns off the furnace as well. Isn't there supposed to be some sort of timer that turns the circulation on and off at regular intervals and also is on when the furnace is heating?An oil furnace with an electric air filter. The furnace works fine, but the motor constantly runs. Problem?
On most oil furnaces there is a fan control called a fan and limit switch which controls the fan and the oil burner if the fan does not work...should be on the top front of your furnace above the burner...some of these have a auto and on switch for the fan...this could be set to fan on...if not or if you have ac installed in unit then could be on thermostat fan auto or on switch....if not turn power off and mark wires from fan/limit and replace ...if you need help call a hvac expertAn oil furnace with an electric air filter. The furnace works fine, but the motor constantly runs. Problem?
Ordinarily the fan runs when the furnace is heating, plus a little before and after.
The obvious thing to check is the switch setting on the thermostat; make sure it is not set to FAN or it will run all the time. If that is not the issue - and I'm assuming it isn't, because you can write coherently, so you don't seem to be an idiot :) - then the fault is in the furnace electronic controls. Unless you are good at reading schematics, that is a job for a HVAC professional.
With an electronic air filter this is customary. The filter can only work when the air is circulating. So if you want filtered air the fan must run to accomplish this goal. It dosen't hurt the motor. In fact it is easier than starting and stopping, also in a commercial application this is now code for the fan to run as long as the building is occupied.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment