The hot surface igniter could glow, but it can still be faulty. I've seen it happen.
What's more likely, however, is a problem with an open limit switch or pressure-switch. The electronic control board (brain center) is telling the gas valve not to release gas because there's something wrong.
Most modern furnaces have an LED light which will flash a varied amount of blinks. The flash code table will then give the heating tech a hint as to where the problem may be.
When you interrupt the power to your furnace the brain resets and is allowed to make five more tries for heat. Normally, this can also be done by turning your thermostat to off and then back to on.
Ignition failures normally require the attention of a trained HVAC man.
2007-01-15 01:39:21
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answer #1
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answered by Huero 5
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This Site Might Help You.
RE:
My Nordyne furnace will not fire. It has an electric ignitor, it tries for the set 5 times and then shuts down
I have to turn the main power off after each 5 tries, then eventually it will ignite. Is the ignitor faulty, because it does glow red.
2015-08-10 05:06:36
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answer #2
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answered by Neila 1
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Nordyne Electric Furnace
2016-10-28 14:16:34
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answer #3
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answered by wisniowski 4
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It sounds like the location of the flame sensor is off a bit. if it has a separate flame sensor it could be sooted up pull the burner and clean the flame sensor rod off with a peice of steel wool. DO NOT REMOVE THE FLAME ROD FROM THE ASSEMBLY. position is critical. Also be careful not to bump the ignitor it is very delicate. If you have lp fuel the flame rod will gather soot more easily and it might be worth changing over to a control that uses the igniter for flame presence proofing. the box is the same but there is no R/S terminal. The ignitor will tend to burn off eachtime it goes through an ignition cycle. the other possibility is that the primary air is set to rich this tends to lift the flame off of the burner end when this happens the current cannot find a path to ground through the flame and the unit registers a fault.
2007-01-14 06:52:59
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answer #4
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answered by oreos40 4
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This is how gas furnaces work 1st they have to purge and prove ventilation. 2nd The hot surface ignitor glows red or the electronic ignitor starts. 3rd Listen for the gas valve to open. If you are not getting any gas and the valve is opening you need to have the system checked by a licensed gas tech. If you don't hear the gas valve open then the over heat thermo resister could be bad either way have your system checked
2007-01-15 03:03:52
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answer #5
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answered by Anonymous
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being in the industry the problem with trying to ignite could be caused by lack of fuel;or as you said a faulty ignitor. if it cannot lite then a safety stop is put on your system.i would call a qualified tech to check your problem and if your unit is not old check to see if under warranty.doing this will not put you at risk of flooding the bulb and creating a fire.
2007-01-14 06:25:58
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answer #6
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answered by ManUnited 2
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Check to make sure the wire fot the thermostat on or near the furnace has a good connection. It might be loss or the switch in the heat pump might be bad.
2007-01-14 06:25:03
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answer #7
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answered by ruthie 6
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If the igniter glows hot, it's probably okay. Is there gas getting to the burners? It is common for the burners to need cleaning. To do that you remove the burner and clean with a wire brush.
2007-01-14 06:23:20
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answer #8
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answered by morris 5
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i would make sure u have a filter in it first then maybe look at the thermostat, my uncle had the same problem that's all i did to fix it .
2007-01-14 06:58:57
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answer #9
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answered by Anonymous
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