Funace keeps shutting down

Is it possible the drain is plugged? The newer furnaces have a moisture drain and will shut down if they are blocked., shutting them down and restarting will reset fault, but will come right back if not fixed.

Usually when your flame sensor gets dirty, the igniter and burner come on for approx.15 seconds, then shuts down. After 3 tries it will lock the furnace out. You have to shut the power off to the furnace then turn it back on to reset it. You need to turn all the power off to the furnace and remove the flame sensor, clean it with some very fine steel wool and put it back in. Be careful not to handle the Sensor (metal) part with your fingers. Turn the power on and set your thermostat so that it will call for Heat. That should fix, it if not you may need a new flame sensor.

does it shut down and then just start right back up? If it does then press and hold the power button and make sure it shuts down all the way. Then take the battery out and press and hold the power button after the battery is out for about 5 seconds. Then let it sit like 10 - 15 seconds. After that put your battery back in and turn it back on and see if this solved your problem. I think its in a loop to make it keep restarting. Let me know if this helped. Thanks, Herb Stacey

It sounds like your flue work in your main problem get this fixed first then see how it runs , pipes should run all the way out of the chimney .

You should have the unit serviced. Each time you shut off power you are resetting
the logic board. The reason it is shutting off is related to a safety device which is
connected to the control board, whether it is a flame sensor or draft inducer sensor
or limit they will all cause the furnace to shut down for safety.

Make sure the flame sensor is clean near the burners, The flame sensor is a metal rod that is on the opposite side of the ignitor. To clean the flame sensor you will need some steel wool, turn off power to the furnace and remove the flame sensor and clean it with the steel wool. I will post a pic of a flame sensor.

check your limit switch

Do the following, let me know if it clears or not:

1. Press the On button to turn the printer off.
2. Unplug the power cord from the back of the printer.
3. Remove all the ink cartridges.
4. Wait two minutes.
5. Plug the power cord into the back of the printer.
6. Press the On button to turn the printer on.

Install the ink cartridges when prompted.



If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe



I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Sounds like a problem with the circuit board.

Need more info. Are you saying that when tstat calls for heat then it short cycles. But if you turn it off then back on it runs ok?