Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

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When my furnace calls for heat the gas turns on and then the igniter should clicks to ignite the gas but it does not click. Does that mean that the module is bad or the igniter itself bad? The igniter has zero ohms of resistance when I put a meter to it and I don't see the 24vdc when the igniter should be igniting. Plus wheres a good place to get a module.

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If the igniter is reading zero ohms that's telling you it's shorted or bad. They should range from approximately 100 to 400 ohms.
If you don't have any resistance (ohms) you won't get a voltage drop or volt reading.

Posted on Feb 10, 2010

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2 Answers

Clicking noise as furnace tries to start


If you have a gas or fuel oil furnace, that is your igniter trying to light the fuel. If it does it for a few seconds and quits without lighting the furnace, there may be no fuel getting to the burner. Check for fuel supply - oil tank empty? gas line turned off? etc

Jan 16, 2017 | Cars & Trucks

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Furnace repair


By not knowing much, I would think that maybe the gas is coming out, but not igniting. I would also need to know if it is working, and heating up your home. If the it is not igniting, than it would not be working. Something may just be caught in it., be sure to check the filter.

http://www.marylandoilco.com/Furnace-Repair-Dundalk-MD.html

Dec 03, 2013 | Heating & Cooling

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Furnace burners won't ignite


Assuming this is a gas furnace, when the thermostat calls for heat the pilot heats an igniter to produce voltage that opens the burner gas valve. In your furnace, the igniter may have failed and the burner can't fire up

Mar 09, 2013 | Sport & Outdoor - Others

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Does not ignite, no gas getting to unit to ignite. Gas supply is on.


More than likely your gas valve or control board is malfunctioning. You can use a multimeter to check for voltage at the gas valve when the furnace calls for it. In sequence, the IDM will come on, then another click that starts the ignitor which glows, then the next click will be the board sending power to the gas valve. You should have 2 wires on the gas valve, put the meter leads there and when the board calls for the gas valve, you should have 24v at the gas valve. If not, the board is faulty. If you do have the voltage there, the gas valve is faulty and needs replaced. Sometimes you can take a pair of pliers or similar tool and gently knock on top of the gas valve and it will get the valve "unstuck" which can get you some heat if needed. Hope this helps!

Nov 28, 2011 | Goodman GMS90703BXA Heater

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

1 Answer

What would cause a furnace to not ignite all burners? York diamond 90 gas furnance - igniter glows, click, hear gas, first burner ignites but not the rest, flame sensor shuts it down. Any...


You could have plugged orfices in the line coming out of the gas valve. Next you could have a plugged gas regulator.The only way your going to find this out is to check gas pressure before the gas valve during a call for heat and then check it after the gas valve during a call for heat you could have a bad gas valve. Try this let me know what you find Thanks and please leave feedback

Dec 16, 2010 | Heating & Cooling

1 Answer

My central heating is on lockout and the burner is with red light


A sampling of various codes on a furnace

Read one LED flash that stays on continuously to mean your furnace has no signal coming from the thermostat and will not operate. Turn the power off and check the thermostat for improper settings or connections.

Interpret one LED flash that blinks on and off to mean your furnace has locked out because it could not ignite after three tries, and must be reset. Interrupt power to your furnace for 20 seconds or lower the thermostat so your furnace does not try to heat, then reset the thermostat to the previous setting. After one hour of lockout, your furnace will automatically reset itself and try to operate as usual.

Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch.


Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection. Also, look for blockages in the flue, and tighten any loose wiring.

Translate four LED flashes to mean your furnace has a primary limit circuit open, possibly from loose wiring or blocked filters. Check and clean filters, tighten wiring and check the flue for blockages.

Interpret five LED flashes to mean your Goodman furnace senses a flame without a call for heat. This could be from a gas valve closing slowly or a burner flame lingering.



Read seven LED flashes as a warning of a low flame sense microamp signal. This could happen with a coated flame sensor or a lazy flame from poor gas pressure. Turn off the power and adjust the gas pressure according to the information on the rating plate.



See eight LED flashes as meaning an igniter circuit problem due to a bad igniter or an igniter connected improperly. Replace the bad igniter or check the ground wiring, making necessary corrections.



Decipher nine LED flashes to mean the high-stage pressure switch circuit will not close during a high-stage-induced draft blower operation. Your furnace may have a pinched or blocked pressure switch hose, a blocked flue or loose wiring.

Read continuous flashing on the LED to mean your furnace has a reversed polarity of 115 volts. Turn off the power and correct the wiring polarity after reviewing the wiring diagram.

Dec 02, 2010 | Heating & Cooling

1 Answer

Have a rheem furnace/ten yrs old.just replaced thermocoupler and gas valve,furnace will turn on thermocoupler will get red but no heat? whats up?


I know it may sound strange but check to make sure the gas cut-off valve is turned parallel with the gas pipe. If its open, you may have a failed fan proof switch. air pressure from draft induced blower causes the switch to click and open the main gas valve. if this this switch doesn't click(close contacts) the maing as valve will not open to ignite the burners. its a sequence of events that a furnace goes through before it ignites the burner for heat.

Nov 28, 2010 | Heating & Cooling

1 Answer

My goodman furnace keeps lighting for about 10 seconds than goes out lots of clicking sounds


Problem: Your furnace will not ignite the gas to produce heat for your home. When a furnace has a bad igniter 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 igniter. I would suggest that you inspect your igniter closely for cracks. Make sure you do not touch the igniter with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, roll-out 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.

NATE, NCCER, PHCC,HVAC Certified Instructor

Oct 25, 2010 | Heating & Cooling

1 Answer

Gas Furnace is not heating anymore.


the fan you hear come on at a call for heat is most likely just the inducer motor. the click you hear is probably the relay for the hot surface ignitor which should glow red, then in turn ignite the main burners. your going to have to determine if the ignitor is coming on. if it isnt the ignitor is bad and will need to be replaced. if it comes on and than shuts off after a few seconds the ifc board is probably at fault

Apr 09, 2009 | Heating & Cooling

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