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Where is the pilot light on my lennox elite 90 furnace?

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5 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

machtcl1
  • 61 Answers

SOURCE: Furnace will not heat.

Most of the Lennox G-16s that I have repaired were having problems with the gray Penn-Johnson Piggyback igniton control module.
This is best repaired by replacing the spark module. Sometimes it may be neccesary to replace the gas valve also. Lennox updated to a ROBERTSHAW ignition system. Honeywell can also be used.
Also check that there is no water in the pressure switch or tube.
Hope this helps.
Matt
machtcl1@verizon.net

Posted on Jan 15, 2009

ozark333
  • 396 Answers

SOURCE: pilot light will stay lit Lennox G8D2-82

You may need to replace the Thermocoupler. It screws into the gas regulator and the sensor end is set in the flame of the pilot light. You can get one at any appliance parts store. The Thermocoupler simply feels the heat of the pilot light and sends a very small amount of voltage to the gas switch that opens when your thermostat calls for heat. If the pilot light isnt lit, no voltage from the sensor and no gas can be released by the regulator.
Anyone can replace one. Just find the tip that sits in the the pilot flame when you try to ignite the pilot light. Follow it down to the regulator and unscrew it. There is no gas involved. It is Ultra Low Voltage. No danger.
Be sure to turn off the power to the unit before you begin removal. Take it to the parts store along with your furnace brand and model number. If you see any identifiers on the regulator, note them and take them with. When you replace it be sure to have the sensor end up in the flame of the pilot.

Posted on Sep 29, 2009

  • 215 Answers

SOURCE: lennox intermitent flame problem

Yes the flame sensor is not allowing the ignitor to start, you will need to remove the flame sensor, and clean the black carbon build up from the stem of the flame sensor, replace the flame sensor and turn the furnance back on, this will correct the problem.

Posted on Dec 14, 2009

  • 4736 Answers

SOURCE: 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.

Posted on Mar 23, 2011

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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.

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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 ...

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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.

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Hello,See if it is blowing out.Relite the pilot and run the fan(blower) with out the main burner running.A cracked heat extanger will be the cause if it blows out.

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1 Answer

Pilot light will stay lit Lennox G8D2-82


You may need to replace the Thermocoupler. It screws into the gas regulator and the sensor end is set in the flame of the pilot light. You can get one at any appliance parts store. The Thermocoupler simply feels the heat of the pilot light and sends a very small amount of voltage to the gas switch that opens when your thermostat calls for heat. If the pilot light isnt lit, no voltage from the sensor and no gas can be released by the regulator.
Anyone can replace one. Just find the tip that sits in the the pilot flame when you try to ignite the pilot light. Follow it down to the regulator and unscrew it. There is no gas involved. It is Ultra Low Voltage. No danger.
Be sure to turn off the power to the unit before you begin removal. Take it to the parts store along with your furnace brand and model number. If you see any identifiers on the regulator, note them and take them with. When you replace it be sure to have the sensor end up in the flame of the pilot.

Sep 29, 2009 | Heating & Cooling

1 Answer

Furnace will not heat.


Most of the Lennox G-16s that I have repaired were having problems with the gray Penn-Johnson Piggyback igniton control module.
This is best repaired by replacing the spark module. Sometimes it may be neccesary to replace the gas valve also. Lennox updated to a ROBERTSHAW ignition system. Honeywell can also be used.
Also check that there is no water in the pressure switch or tube.
Hope this helps.
Matt
machtcl1@verizon.net

Jan 13, 2009 | Honeywell Electronic Programmable...

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