Scheduling your routine furnace maintenance helps keep your heating system working up to thirty percent more efficient and helps extend the life of the equipment. But things could still go wrong, and when they do, you might feel like you’re always hearing about something else.
This time it’s your heat exchanger, next time it’s your control valve. Now your find out the flame sensor has to be replaced.
Also, what is a flame sensor?
A flame sensor is an important safety component on your gas heating equipment. During the ignition cycle, your gas furnace goes through a process where either a hot surface ignitor or a spark actually ignites the gas. When the gas is ignited, the flame sensor generates a current of electricity. The current is calculated in micro amps. If the furnace’s control board does not read the right level of micro amps, the furnace will quit giving the system fuel to stop an explosion.
Over time, if the flame sensor is not cleaned properly, oxidation or carbon buildup can restrict the flame sensor’s ability to function properly, which can end up causing the heating system to malfunction.
The way to establish if an unclean flame sensor is the reason for a furnace malfunction is to take a micro amp draw reading, which an expert heating technician can supply you. If a dirty flame sensor is the culprit, the furnace expert will clean the sensor with steel wool. If dirt was the single factor, we will see a significantly higher amp reading. If the reading doesn’t change, the technician will proceed with the heating system repair diagnostic process.
If you aren’t confident your heating equipment is going to outlast these last few weeks of winter, give Service Experts Heating & Air Conditioning a call and we’ll come out and perform a full furnace maintenance or a free in-home estimate on a new furnace.