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Furnace will not light it has an electronic ignition gas does start but igniter doesn't heat up how can I check to see if that's the problem or could there be another problem the furnace is a philco

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  • 180 Answers

Sounds like the ignition is not working, you should probably get a new unit, or get a new ignition module. Depending on price of new module and ability to change it. Or maybe your just out of fuel.

Posted on Apr 17, 2014

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Goodman GMS90904CXA Wont ignite, light blinks 3 times

Ok, you either have a inducer fan issue or a pressure switch issue or a plugged vent pipe. The inducer turns on to establish a draft for the exhaust. If it is not working you will get this error code. If the pressure switch does not sense pressure caused by the inducer, it will give this code. If either the intake pipe or exhaust pipe is blocked (even y just a little) it will give you the same error code. If the condensate hose or receptical is plugged, again it will give you this error code. Good Luck!

Posted on Oct 21, 2008

  • 56 Answers

SOURCE: furnace shut off after 3 time flame from pilot

Sounds like you may have a weak or bad flame sensor. If the circuit board does not sense a good flame it will not light the burners. Also if your furnace is 5 yrs or newer it should give you a fault on circuit board in the form of a blinking or a code itself.

Posted on Feb 16, 2009

  • 92 Answers

SOURCE: gas wont ignite

unless you are well trained in troubleshooting you need a pro .carrier furnastys are overly complex you should call carrier dealer if you want the shortest route to a workin system

Posted on Feb 26, 2009

  • 80 Answers

SOURCE: furnace will not light. Igniter glows but no gas

Make sure that the switch on the gas valve is in the on position. If it is and the gas valves coming into the furnace are open, you probably have a bad gas valve.

Posted on Oct 04, 2009

  • 2458 Answers

SOURCE: amana gas furnace,air command 80 sv. does not ignite blows cold

Hi check out the pressure switch jump it out and see if it lights also check the igntion coil is glowing

Posted on Feb 09, 2010

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I recently had a ducted gas heating unit undergo a routine service. At the same time, the technician identified an external gas leak. The gas leak was subsequently fixed by another technician who noted...


The tech that fixed the gas leak had to shut the main gas supply off so if he didn't bled the line to the furnace you may still have air in the line....... Go ahead and shut the furnace off and retry to start it again it takes a couple of trys to bled the air out through the pilot.... And if that doesn't work I would call the first tech and have him recheck it......that is assuming that you have an electronic ignition type furnace.

Apr 19, 2011 | Heating & Cooling

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Heater doesn't come on?


The electronic ignition system in a gas furnace is a modern development that allows more reliable performance than standing pilot furnaces, provides energy savings and contributes to better furnace efficiency (AFUE). With a standing pilot, found most commonly on older low efficiency furnaces (55% to 65% AFUE is not uncommon), a small gas flame is always burning and is known in the lexicon of American home repair as a "pilot light". The problem with this type of "analog" ignition is that it wastes energy by constantly burning gas and can sometimes be unreliable. These issues have led to the development of electronic ignition systems for mid to high efficiency furnaces that exceed the U.S. government's established minimum AFUE rating of 78%. The electronic ignition occurs typically in one of two ways:
  • Intermittent Pilot, or
  • Hot Surface Ignition The intermittent pilot system uses an electronically controlled high voltage electrical spark to ignite the gas pilot and then subsequently the main burners, when the thermostat calls for heat.
    The hot surface ignition system uses an electronically controlled resistance heating element not unlike a light bulb filament (and shown in the photo above), to ignite the gas burner.
    It is important to understand some of the other components of a modern furnace that you will encounter depending on the type of high efficiency furnace you have. Why? Because they can also come into play in repairing an electronic ignition furnace when it won't run properly. Let's take a quick review of the types of furnace designs and components found in high efficiency furnaces using electronic ignition.
  • Nov 14, 2010 | Goodman GMS90703BXA Heater

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    I have an Evcon hot surface ignition furnace and can not get the heat to come on .I set my thermostat on desired temp and starts running,but the blower wont come on,on auto I have to switch to the on...


    Troubleshooting and Repair
    Furnaces with electronic ignition systems may be much more efficient than their early counterparts, but they do it largely through electronics. However, there are still some troubleshooting you can do but fixing the problems can involve replacement of parts more so than repair or adjustment. PROBLEM: Furnace burner will not ignite
    Possible Solution
    • With a Hot Surface Ignition (HSI) system, if a gas hissing sound is heard for about 7-10 seconds and the burners do not ignite, the furnace will go into lockout mode.
    • To reset turn the furnace power switch off and back on and try again. The switch is probably located on the side of the furnace. A reset button may also be found on the solid state controller. If resetting fails again, proceed as follows.
    • Turn off power and gas to the furnace
    • Remove and check hot surface igniter being careful not to touch the heat element. If it is cracked or damaged, replace the igniter.
        PROBLEM: Furnace comes on for 7-10 seconds then turns off Possible Solution:
        • Turn off power and gas to the furnace
        • Remove flame sensor from its bracket. Lightly clean the surface with fine emery cloth and replace.
        • The problem may also lie in a bad ground or the the black and white wires being reversed (reversed polarity) at the junction box or outlet powering the furnace.
        • The electronic ignition control module must ensure current flow through the flame sensor to ground and if the polarity is reversed in the circuit there is no voltage potential and the flame sensor does not work and closes the gas valve.
        • If the black and white wires are connected correctly and the flame still drops out, then the issue may be a bad ground. Using a volt-ohm meter, measure between the white wire and the ground wire to be sure you have no voltage.

    Nov 01, 2010 | Heating & Cooling

    1 Answer

    We have a coleman electronic ignite propane furnace for a mobile home it is not even 3 winters old. Regulator just replaced, tenant ran out of gas. We turned off the power and reset the computer-the...


    This furnace should have a diagnostic light that will give you a starting point where to look. It is located on the control board and will blink a code. If you remove the panel with the door switch on it, you will erase the code. Look for a small viewing port that looks on to the circuit board. Once you get the code, look on the wiring diagram for a explaination of the codes.

    On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

    What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

    Jan 24, 2010 | Coleman Propane Forced Air Heater...

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    No ignition on dayton gas furnace. how hard is it to install new gas valve on a dayton furnace


    not hard but before replacing check pilot light and thermocouple for proper function and setting if pilot light not in right position thermocouple wont open gas valve if electronic ignition check for power and proper gap on igniter also check stat for proper function

    Oct 31, 2009 | Dayton Gas Furnace Heater

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    Amana furnace main burner intermitent


    Sounds like dirty flame sensor. You can either clean it orreplace it.

    Apr 21, 2009 | Honeywell Power Humidifier: Furnace...

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    Fault Code on Dayton Gas Furnace


    This happens when the furnaces tries to light to many times and doesnt succeed. If you stand in front of the furnace while it is coming on, you will be able to hear the problem. If its an electronic start, there will be a clicking sound, followed by the gas valve opening to start it. If it has a pilot light, make sure it is lit, then listen for the gas to come out, it will make a hissing sound. If no gas is coming out, first double check to see if the gas is turned on to the unit, if it is, then its possibly the gas valve. Oh, if it is electronic, and you hear gas, but dont see a glow inside the furnace, or no glow or gas, it could be the ignite. Hope this helps.

    Jan 07, 2009 | Dayton Gas Furnace Heater

    1 Answer

    Blower on colman gas furnace will not come on. (have no gas yet)


    I'm not a furnace technician. But I have worked on several Coleman trailer furnaces. So keep in mind that my terminology might not be exactly correct. But I think I can help you.

    I don't know what model you are running, but most of them run pretty much the same. You have a four basic components to check. Thermostat; Ignition Control Module; Pressure Switch; and which ever of the following that you have (Glow plug, Electronic ignition, Pilot Light).

    I'm assuming that you are referring to the blower as the "Rat wheel blower" (round wheel looking thing with fins on it). If my assumption is correct and if the power from the breaker box to the furnace junction box (Probably with a on and off switch on top or side), than when you give it power (from breaker box and turn thermostat up) the fan (not blower) comes on. If it doesn't there is a probably a problem with your Thermostat or Ignition Module. If it does come on and your glow plug or you igniter tries to work. Than yes, you are correct, you have to have gas pressure to let the pressure switch know that there is adequate gas supply pressure (gas- 5 to 7 W.C, propane 11 to 13 W.C). The reason for this is if the Pressure Switch doesn't feel the correct pressure. It thinks you have a leak and won't release gas for ignition. After you turn the gas on. If the furnace doesn't ignite. Make sure the Thermostat is definitely wired properly. Now we are down to one of three problems. If the Glow Plug, Electronic Ignition, or pilot light are working properly. Than we are down one of two problems. The Ignition Module or Pressure Switch. Check pressure on the Pressure Switch. If yuou don't smell gas it is probably OK. But it is best if you use a manometer. I have rarely found Pressure Switches bad. Normally if I get to that step. It is the Ignition Module. The Ignition Module kind of like the brain of the furnace. It is located behind one of your front panels. It will have approximately 10 wires going to it. Some will be going to the Thermostat, some to the Glow plug (Igniter), some to the Pressure Switch, and some going to the blower.

    I have probably said more than you need to know. If I did I apologize. But to wrap it up. You were probably correct. You definitely need gas for the blower to kick on. The furnace has to light and heat up before the blower will Start. Not to keep rattling, but to check to see if the blower motor will run. Is to switch the Thermostat from "auto" to "run".

    Good Luck

    Nov 17, 2008 | Coleman Propane Forced Air Heater...

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