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Furance blower works, ignitor come on for a short time we hear a click ignitor goes out blower runs for a short time ignitor come again but gas not coming on. What is wrong.

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The ignitor needs to get up to a predetermined temperature prior to opening up the gas valve, you could have a weak ignitor. You need to see if the PC board is sending 24 volts to gas valve. If it is but no gas, bad gas valve. If not, bad ignitor or bad PC board. I would change out the ignitor first since it is a wear item as well as the cheapest component.

Posted on Mar 14, 2011

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Furance starts, runs short time, blower stops short time, then blower comes on, burner still runniing.


Sounds like you fan limit control is not set properly. Or the blower speed is set to high.

Jan 03, 2014 | Intertherm 56000 Btu Gas Furnace

1 Answer

I have a Kenmore gas dryer Model 74812200. It is no longer heating up. When I turn it on, I hear a clicking sound for about 30 seconds then it goes off. Then about a minute later I hear the clicking sound...


You would not hear the click if the ignitor was bad. It won't click until the flame sensor get heated up by the ignitor. So that tells me the thermal fuse ain't melted. I would say them coils on the gas valve are the problem. themobilian_2943.jpg

Aug 30, 2011 | Kenmore 74812 Gas Dryer

1 Answer

I recently came to home to find my furance (natural gas) running but it was blowing cold air. I pulled the filter, it was dirty, cleaned it and replaced it. I turned the furance back on and it worked...


You are resetting it every time you take the panel off the front of the unit. It is locking out the circuit board. No. 1 reason for this is a dirty sensor. The flame sensor is the small rod-like part that senses the flame of the burner. It is usually pretty close to the hot surface ignitor (the part that glows bright when the furnace is igniting) Watch your furnace burner light. You will see the ignitor come on. The sensor is a little bigger than a pencil lead and it will be just a couple inches away from the ignitor.

Take the sensor loose and clean it only with fine sand paper or emery cloth. Chances are this will solve your problem. Hope this helps

Apr 21, 2011 | Heating & Cooling

1 Answer

I have a newer tappan heater and get 4 blinks on led for error code the unit starts up fine and has flame but flame goes off when blower kicks on


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

Nov 26, 2010 | Heating & Cooling

1 Answer

Rheem 3204-80D furance. Turns on and fan starts. Then in about a minute the fan shuts off.


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad ignitor what I see most of the time is the following sequence of operation:


1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.

Nov 26, 2010 | Heating & Cooling

1 Answer

Whirlpool gas dryer Model #WGD5530SQ0 not heating properly


If your dryer heats when you first turn it on and after a few minutes it does'nt. check the ignitor to see if it is glowing. It should glow bright then you will hear a click and the burner will light. If the ignitor glows bright but you hear a click but no flame and if you watch this for several minutes and this process continues of glow then glow goes out no flame, then you have a bad burner coil. There are 2 black solenoids sitting on top of gas valve. One of them is shorting out after it warms up. Replace both solenoids. You can usually get them as a kit from parts store.

Feb 04, 2010 | Dryers

2 Answers

Furance won't lite


The first thing i would do is turn thermostat down and turn power off wait for a few minutes then turn power back on and then thermostat back up. If it has a ignition module then there should be a blower motor. It should come on then a pressure switch that should click then the ignitor should glow or spark. there should be a round glass circle that you can look through to see the ignitor

Apr 04, 2008 | Goodman GMS90703BXA Heater

1 Answer

Goodman furnace


Check the roll out switch(s) and the lock out switches. They are a small disc looking about the size of a nickle, with with 2 wires attached on them. There will be a re-set button in the middle that resembles a small peg. Push this in to re-set. As the glow coil shorted out, the fuse on the control board may have blown. On the newer furnaces find the main board and look for a car type fuse. If blown, replace. You also have the symptoms of a bad limit switch, by the clicking noise (the heat fan relay) and the blower fan running instantlly.

Jan 05, 2008 | Heating & Cooling

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