I have a gas fired forced air furnace that is about 15 years old. Last winter it wouldn’t kick on. When the repairman showed up he told me it was the rollout switch,flipped it, and sure enough my furnace kicked on. Since that time it has happened many times and the furnace always kicks back on. I know this isn’t fixing the problem but an not sure what to do. I am loathe to call a serviceman again.
thanks
Replies
I have seen boilers that have a problem with the rollout switch from having heat build up under a sheet metal cover. Replacing the cover with a slotted one fixed the problem. Or the switch could be bad. But repeated incidences of the switch shutting off the furnace could indicate a problem with the furnace itself. I would have a professional look at it again. Also try checking with the manufacturer for information regarding this problem.
Thanks for the feedback. there is a metal cover over the switch that isn't slotted. I'll try that first and if it still trips try replacing the switch,hopefully I can manage both.
I was not suggesting that you replace anything on your furnace; I was just trying to illustrate that there can be problems with a piece of equipment other than a bad switch. In that case it was something that the manufacturer had problems with, and made a new slotted cover as a replacement. I would strongly suggest that you contact the manufacturer, and have a professional who has testing equipment come look at your situation.
Stossel (?)
I quote from a furnace repair manual....:
The furnaces flame rollout switch is designed to shut the furnace down immediately if flame/excessive heat is sensed in an area they don’t belong. ...
I do not think I would want to do anything to modify the performance of this safety device. if it was working properly before...then I would find out why it is not working now ! There may or may not be anything wrong with the furnace, but do you want to bet your life, or your family's on it ?????? I would spend the money to pay a professional to fix the problem.
Just my opinion,
Bill Koustenis
You have a problem with the furnace or its installation, period. Call a qualified tech to find the problem. Do not modify the safety.
Had the same problem with a 4 year old gas forced air. Was the heat exchanger. Had to do a co check on the flue gas to catch the problem. After removeing the exchanger from the furnace couldn't find a break untill filling it with water.
I'm with everyone else; call a pro, possibly save your family.
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"I may have said the same thing before... But my explanation, I am sure, will always be different." Oscar Wilde