Can you tell me how to clean or replace the flame sensor? How much is it to replace?

Flame sensors can be electronic or mechanical. Mine is electronic called a Fire Eye. It sees the flame so it allows the gas to continue to flow. Is this a furnace or boiler or what. Brand and model may help. Do you have a pilot light and know where to find it?

Ckeaning the flame sensor on a gas furnace usually consists of taking sand paper or steel wood and cleaning the sensor. Becareful not to touch the ignitor which is close to it since that part is is easily damaged.

Hello, I have a air-ease furnace, I turn on the heat the bowler come on and the flame but flame go out.is that the flame sensor that keeps the flames going.

How long do the flames stay on?

how long do the flames stay on?

5sec.