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My furnace gasvalve get stuk and pilot and ignitor are ok the fan kicks in .i hit the valve then it works its lennox g 2003

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About the only option I see is to replace the gas valve as the are no servicable parts in the valve. The only other thing I can suggest you try is to remove valve and very carefully try to blow thru inlet and outlet to try to free any debris such as small rust particles that may be causing valve to stick. Be sure to use low pressure air only. No more then 20 p.s.i.Hope this helps you and thanks

Posted on Mar 11, 2011

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1 Answer

I have a Lennox furnace Model G19 and the pilot will not light.e You get the normal clicking sound and the ignitor lights but it seems to be a very small flame and the pilot does not light. The ignit


probably need a new control board. so it sparks but gas not coming on? usually you will hear a click then hear gas coming out. if you have a voltage meter check voltave going to gas valve while ignighter is clicking if you have voltage bad gas valve. you should read about 24 volts at gas valve.

Mar 09, 2014 | Heating & Cooling

1 Answer

Gas furnace wont light


if pilot light is on, probably should be a knobs with settings for PL only, on, or off.

Nov 09, 2013 | Heating & Cooling

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Lennox furnace model G11Q3-110 v.2 burners light but go out before fan comes on


Troubleshoot an ignition problem on a Lennox gas furnace ...

? 2:44
https://www.youtube.com/watch?v=yXIxgzwMkPs
Nov 17, 2012 - Uploaded by grayfurnaceman
This furnace should light its pilot with a spark then the pilot proves its on ... Troubleshoot an ignition problem on a Lennox gasfurnace .... Pilot and no inducer but is the same model as that great video! ... You probably have dirty burners. ... How do you know spark module is not sending 24 volts to mv and pv ...

Lennox Furnace Model G11Q3-82-2 - RepairClinic.com



Nov 19, 2012 | Heating & Cooling

1 Answer

LOCATION OF 62-24164-01 IGNITOR ON WEATHER KING FURNACE


Who knows? You gotta post a video of your furnace so we can see what you got. Here is the sequence of operation of a late model furnace. they all basically work the same way. They have a draft inducer fan that causes a vacuum in a small hose leading to the pressure switch. If the board reads negative pressure it know the draft motor is working and pulling a draft it then cause the ignitor to kick in and after a minute opens the gas valve. It wait a sec to verify flame with the flame sensor and then if that flame is there it keeps burning and after 30 more seconds the fan kicks in.
Most of the time if the ignitor ain't workin it is either bad or a limit has tripped due to some sort of overheat problem like birdnest or cobwebs and such.
https://www.youtube.com/watch?feature=player_embedded&v=NjOsXv4Z-lg

Oct 05, 2012 | FACTORY AC PARTS Furnace Spark Ignitor...

1 Answer

For some reason the heater does not generate heat. the fan works but no heat. Any Ideas?


I've got an easy way for you to check, and then we can help you from there.
First pop open both lids to your furnace (this may require a screwdriver). Turn up your thermostat, push the safety interlock button in if it has one (it's a button that turns off the power when the doors are removed), and watch.

On most modern furnaces (past 20-25 years) you'll hear/see:
1. Inducer fan
2. orange glow (ignitor)
3. Gas valve opening and ignition (flames)
4. Main Fan.

that's normal heater operation.
The most common issue here is a burned out ignitor, in which case you wouldn't see the orange glow but the sequence would attempt to continue anyway (the gas valve will open and hiss gas, but it won't lite, then it'll give up and try again a few minutes later).

On older furnaces there's a pilot light to start with, the click of the gas valve and boom... ignition.

On new furnaces it's
Inducer fan
gas valve opening
spark - ignition
Main fan.

and there are some oddballs in between, particularly the Lennox Pulse. If that's your furnace just back away slowly and call a professional... some guys won't even touch those, so be sure to mention what it is... if you call a pro.

So go ahead and watch it run, then tell me/us what you see.

May 06, 2011 | Bionaire Heating & Cooling

2 Answers

Lennox G8Q3-90-4 will not ignite the pilot. The


While holding down the control knob for the pilot, you either have to use the pilot ignitor or match light the pilot. Then old the knob in for 60 seconds, before releasing it. If the pilot remains lit, turn the control knob to ON. If the pilot does not remain lit, the Thermocouple or Thermopile may need to be replaced.

Hope this helps you to solve the problem.

Mar 23, 2011 | Heating & Cooling

2 Answers

I have a gas valve on a lennox furnace that keeps chattering and causes the flame to go off and on constantly. I have replaced the circuit board and flame sensor and cleaned the pilot ignitor. This has...


If the gas valve is chattering it is probably the coil on the valve. You can obtain a ohm reading on the valve and see if you have high resistance with a multimeter. Also check to see if your getting at least 22 volts across the coil should be terminals mv and c on the valve or sometimes there is just a 2 wire plug going to the valve. I think the coil on the vavle is faulty from the info you have given. Feel the black or silver coil on the valve and see if its getting really hot to touch. I would replace the valve

Dec 23, 2010 | Dayton Gas Lonox Furnace Heater

1 Answer

I have a sv9500m 2674 tha has a sticker that says it has been converted to L P gas. The ignitor lights the pilot and the fan comes on. The pilot stays lit and the main furnace fan comes on but the burner...


Hello,If you cleaned the flame sensor and it is in the pilot flame,Try adding a ground wire from the pilot assembly to any close screw to boost the (pilot on) signal.Also if the valve has been sitting for a while give a tap once during (pilot on) to make sure the diaphram is just not hung up.I would hate to replace the valve and still have the same problem.

Oct 15, 2010 | Honeywell Heating & Cooling

1 Answer

Hear furnace start, ignitor glows but not kicking on. We did sandpaper trick on flame sensor.


the flame rod doesn't come into play until the pilot flame is established. check the pilot valve.

Oct 23, 2009 | Goodman Heating & Cooling

1 Answer

My lennox furnace kicks on, then it shuts off


It should have a diagnostic set of leds on the board, with the code list on the door and the control board itself. If it get to the pilot stage and the shuts down its most likely the gas valve. You can check for continuity from mv to c on valve, you should have it. Then with a valtage test from mv to a ground or common as you here the next click of a relay on the board after the pilot has had a few seconds.

Mar 12, 2009 | Washing Machines

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