Okay, what is going on. is the system lighting or not. If it is just sparking then you need to just the gas value. But if the system lites and then only have a flame for about five sec. then shuts back off, then your flame sensor is dirty. Take a wire brush and clean the flame sensor. The flame sensor is right there with the burns because a flame has to hit it for the gas to stay running. Just take a wire bush and clean it..... let me know
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Repairman (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
This is possible, however it is possible they are missing something simple. I hope you can follow along. 1) Is this a Sealed Combustion Furnace, meaning you cannot get to the burners even after you remove the Door Panels?
2) If yes, is this furnace vented with pvc/plastic piping? 3) If yes, do both pipes go outside? 4) If yes then try this.
1) Turn the main power off to the furnace 2) Remove the Door Panel to the burner section. 3) Turn Furnace back and turn the thermostat all the way up. 4)Look into the burner compartment and tell me if the igniter glows red. If it does and the goes out with the burners not coming on.
5) If you feel comfortable or know of someone that is. 6) Turn the furnace off, remove the panel that conceals the burner compartment.
7) Turn the furnace on, if the igniter glows red and the burners ignite. Your problem is in the venting system. Most likely the intake pipe if it goes outside. It could be plugged or something is blocking it. If the burners do not ignite the next thing to make sure that is happening is that the Exhaust blower is operating and you can feel air outside where the pipe terminates. If you it is but no very strong, then your problem could be the inducer motor or to small of vent pipe.
If you could, send me some information about how it starts up 1) Main blower may come on and shut off, make sure the blower runs in on position 1st then back to Auto position. If it does not, you have another problem.
2) The Exhaust blower should come on next 3) About 17secs. later the igniter should glow red. 4) You will here the gas valve make a click 5) The Burners will ignite 6) The flame sensor rod on the far left hand side of the burner will keep the burner lit. If it is dirty the burners will shutdown. 7)About 90secs. later the main blower will come on.
Well, here is the deal: unless you rewired from two wire to multiple (usually 4 to 10 wires) wires, the fan cannot be controlled from the thermostat, even though the thermostat indicates that it can > it is a physical wiring and fan administration issue.
Unless you have a newer furnace, the fan is controlled by plenum temp. Works like this: burner turns on, no fan until the plenum temp reaches set temp,....then burner off, and fan keeps running until pelnum temp drops, and often the fan may kick on a few more times as this temp depletes.
It appears your furnace is a downflow furnace. The sensor will be located near the bottom of the furnace. When you first turn it on, you should see a red glow.....this is the hot surface ignitor. Normally, the Hot Surface Ignitor is located on one end of the burners and the Flame Sensor is located on the oppoosite end of the Burners.
For more detailed information, click HERE.
This sounds like a bad heat exchanger. It is possible that you do not see the crack because the crack is closed when the heat exchanger is cold (or room temp). Allow the furnace to heat up, this will allow the expansion of the crack. Turn the power off and examine the heat exchanger while it is still hot.
Sounds like the flame sensor. But it could be the thermostat. Is the furnace standing pilot or electronic spark or hot surface ignition. I would start by checking thermostat. Turn power off to furnace take thermostat off wall and take wires marked r & w and connect them together. Turn power back on if furnace works then change out thermostat.Most eclectronic ignition Furnaces have a flam sensor, You could take flame sensor out and clean it up with steel wool or wire brush. If you need anymore help just reply back .
Is this furnace standing pilot or electronic ignition. If standing pilot i would check furnace filter then the thermastat. To test themostat first turn power off to furnace. Take thermostat off wall and take wires labled R & W and connect them together. If you have electronic ignition I would start with cleaning the flame sensor with steel wool or wire brush.If you have and more questions i will be glad to help.