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have to know the model and serial of the furnace.
locate code list usually inside or on the back of a door.
Operation sequence= call for heat--inducer blower motor--makes pressure switch--signals board to bring on hsi--after a set time gas valve opens and you have ignition--main blower motor comes on after a set time
Try turning the circuit breaker off going to the furnace. I know that works on a geothermo furnace, it may be worth a try. Leave it off for about two minutes and then try a normal restart. Good Luck and please rate my answer so I get points.
As an Empire Comfort Systems dealer, I'm not quite sure what your mean by "snap switch"? It certainly isn't anything that's listed in the parts manual for your gravity vented furnace.
Your furnace is equipped with a manual "reset vent safety switch." The manual reset vent safety switch will cause gas flow to the main burner to "shut off" due to improper venting or a blocked flue.
Is this what your serviceman replaced? Since then have you or anyone checked to see is vent pipe is clogged or is improperly venting?
If the manual reset vent safety switch continues to "shut off" the gas flow to the main burner. A qualified service person must be contacted to inspect for improper venting, blockage in the vent pipe or the manual reset vent safety switch for being defective.
That means that the furnace is throwing a code to trouble shoot whats wrong. Most of the time, furnaces will have a code list on the inside of the door cover to explain what each code means, some of them don't. Its hard to say what it could be without knowing where to start. However, answering a few questions with someone knowledgeable over the phone if possible could help speed things up, but it would involve you being at the furnace and seeing what happens before it throws the code. If you do have a code list, this would help tremendously.
You can find what the error code is by looking on the inside of the bloewr panel. If it is still there after all these years there is a code list right around the wiring diagram. If my memory serves me correctly it is a limit problem. But be for sure and check the code sheet.
Error code 12 is blower on after power up. Meaning: after you turn on power to the furnace for aprox. 60-90 seconds the blower will run. The blower should then shut down and the furnace should go through the start up process, providing that the thermostat is set for and calling for heat. If the furnace fails to start after blower shut down there should be a new fault/error code. However if the blower continues to run longer then 90 seconds and continues with the same fault code more then likely the circuit board is bad. Please let me know if this was helpful and give me a rating. Good luck.
you probably have a cracked heat exchanger which is causing the rollout switches to trip.even the tiniest of cracks will cause the fan to blow the flame back into the unit and cause them to trip. check the heat exchanger for even the tiniest of cracks if so replace it. and be sure to have a carbon monoxide alarm in your home.
I NEED TO KNOW WHAT THE EE2 CODE MEANS.ON YOUR FURNACE THERE IS A LIST OF ERROR CODES,PROBABLY ON THE BACK OF THE DOOR ON THE HEATER.WE NEED TO START FROM THERE TO GET AN UNDERSTANDING OF WHAT THE UNIT IS TRYING TO TELL US. JEFF