Question about Lite On Laars Lite 2 Heaters: 250,000BTU MV Heater

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Heater fan runs when turned on but now the ignition does not spark, please help

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Usually it is the circuit board or ignition module

Posted on Jul 12, 2009

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VERY GOOD "spark" HOOKED UP YOU CAN SMELL THE GAS WHEN YOU HOLD THE BUTTON IN IT WILL IGNITE THE GAS WHEN THE FAN OFF BUT DOES NOT


Possible weak gas flow to igniter may require adjustment, have a qualified gas technician check it.
press the helpful button

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My 40-FAC heater will not ignite and run. The igniter has been replaced. What should I check next?


These models require electrical power to run the blower fan.
When you connect the electrical cord, the fan should turn on, then you should be able to start / ignite the propane. if the fan does not turn on when you connect the power cord, you will not be able to ignite the propane.

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Heater will not start


Does the blower motor start when you plug it in/turn it on? It may take around 5 seconds if your heater has a HSI(hot surface igniter). If it does you need to check the igniter and the fuel flow. Either way, remove the top of the heater. You will be able to see the fan, igniter, and fuel nozzle. Turn the fan by hand to see if it turns freely. If it does, watch out for the fan and turn the heater on. Look for the igniter to start sparking (spark plug type) or glowing (HSI type). Next, use a flashlight to look for fuel spraying from the nozzle. If fuel isn't spraying, try cleaning the fuel nozzle and check the fuel filter. Watch out for the HSI, if you have one, they are very brittle and easily broken. If you still don't have fuel flow after cleaning the nozzle and the fuel filter, you may have an air pressure problem. Let me know and I will tell you how to check it. Don't forget to rate the answer if it works.

Jan 03, 2011 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

I have a 165000 reddy heater.I have fuel going in,igniter is glowing ,fan is running but it will not ignite.


Now you may want to try to reposition your igniter closer to the fuel source. I have also widened the spark gap on the spark type igniters and had success. Then are you sure that the igniter is getting hot enough to ignite the fuel?

Dec 14, 2010 | Desa International (R165DT) Utility Heater

1 Answer

When plugg in fan turns about a 1 second and stops. Used to work fine last year actually used it couple times this year too what seems tobe the problem thank you


sounds like an ignition problem. The fan is supposed to start first to get the airflow going, then the igniter should heat up (glow igniters) or start sparking (spark plug igniters), then the fuel starts pumping. If the igniter is not working the fuel won't start. Things to check.... igniter - see if it is intact, fuse (usually in the circuit board), If those are ok, then check fuel pump, fuel filter, air filter. Hope this helps.

Jan 12, 2010 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

I have a Dyna Glo-pro multi fuel heater. When I turn it on the ingitor starts working and than the fan comes on for a few seconds. Then the system shuts down because it willnot ignite. The tank is full and...


Since it does not ignite, Please check the ignition transformer. This have a secondary voltage of about 20,000 to 25,000 volts, enough to make your igniter
spark, thus, causing the atomized fuel to ignite and burn the fuel. So, please include igniter high voltage cable for ground leak. Ground leak is visible as line sparks when your heater is switched on. If your ignition transformer does not produce sparks at the
igniter, it means it needs to be replaced.
Have it done to make it work. Hope this will help you.

Jan 10, 2010 | Dyna-Glo RMC-8001SS Heater

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Century Dyna-Glo Propane Construction Heater, fan stays on?


The heater is designed to continueously run the igniter , so as if there is a flame-out ,it will reignite the burner,and not dispurse unburned gas into your enviroment.

Jan 11, 2009 | Century Tool 2320I Heater

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Reddy Heater will not ignite flame


Please answer the following questions. There are several folks on the board that can help but we need to know some vital information so we can get started. Answer these, if you can:
  1. Which Pro 110 do you have. We need the exact model number. Pro 110 is a series of heaters.
  2. Does the heater have a spark plug or a glowbar (HSI)?
  3. When the motor runs is it pumping fuel?
  4. When the motor runs is the spark plug firing (or glowbar glowing)?

Nov 13, 2008 | Reddy Heater-170,000 BTU Kerosene Deluxe

2 Answers

Please HELP


www dot desatech dot com is a parts distributor for reddy heat products. on their main page they have a short troubleshooting guide. the motor needs to provide 3.5 psi of air across the fuel nozzle to suck the fuel out of the reservoir. check your ignition source (spark plug, hot surface igniter) if the hot surface igniter is broken get a new one, if the spark plug don't spark, check the gap might be too big. see if the spark plug is grounded. poor grounds will cause intermittent sparking. check the high voltage wire for breaks in the insulation, might be shorting out to ground BEFORE the plug. gap should be 75 thousandths.

Dec 04, 2007 | Reddy Heater-30-55,000 BTU Variable

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All Pro Heater


most parts for kero heaters are interchangable. go to desatech dot com for parts. check for a reset button for your heater. if no reset, does the fan run? your unit can use one of two ignition parts. a spark generator with a spark plug or a hot surface igniter. the unit uses a cad cell flame detector. you might need to replace this.

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