Question about Reddy Heater-170,000 BTU Kerosene Deluxe

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Heater will not light

Ignitor comes on, fuel comes out of nozzle but will not light

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I Adjusted And Cleaned The Roaders And Gapped Them To Correct Setting. It Works Great.

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Posted on Feb 11, 2008


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SOURCE: Won't light

thermostat don't work on my 125T unless you turn it up to about 55 even though it is colder in the garage

Posted on Dec 05, 2008

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I HAVE A 115,000 btu Keroscene heater. It just stopped running.

Take the top cover off of the unit. Plug it in and look inside the burner can to see if the ignitor is glowing. If not you probably need an ignitor. You can remove it to check the heating element to see if it is intact, but be very careful, it is more fragile than glass. If it is intact, you may have a control board issue. The ignitor should glow before the fan starts. Be careful to stay away from the fan blades while doing this. If the ignitor glows, and the motor starts, you should then be able to see fuel spraying out of the spray nozzle. You may need a flash light. If the fuel does not spray out of the nozzle in the correct amount, the unit will shut down. There is a photo cell that detects ignition. If the fuel pattern does not look even, you could have low air pressure out of the pump, a dirty fuel nozzle, or a plugged fuel screen inside of the tank. The air pressure comes from a pump on the back side of the blower motor. Insure that the filter are clean on the pump; there are three of them, and the plastic end cap needs to come off to access them. If they are dirty, they need to be replaced. The air pressure off of this pump is very critical to proper fuel delivery. The rated output pressure of the pump is on the heater data plate. You will need a low pressure air gage to check this pressure. Another source of low air pressure is the plastic end cover over the filters. They tend to crack with age. Spray soapy water on the end cap while the blower is running to look for leaks.

Jan 18, 2011 | Reddy Heating & Cooling

1 Answer

Replaced ignitor No Fire

Make sure that the ignitor is in the mist of atomized fuel. Or better yet do you have signs of fuel atomization? Check fuel filter usually an in line transparent type filter, if it is clear check the nozzle they have a screen inside as a filter as well no fuel there lines to the tank are next in line if you have fuel up to the nozzle it may be time to replace the nozzle sorry but you can not clean them any slight bend or widening of the holes changes the rate of the nozzle. Pay attention to the GPH rating and spray angle when replacing the nozzle.

Dec 10, 2010 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

All pro heater turns on but won't light and shuts off after about 15 seconds

It's supposed to shut off if it doesn't light off. Take the top off, and while staying away from the fan turn unit on and observe if there is fuel coming from the nozzle and spark at the ignitor. No fuel could be a plugged filter in the pick up tube. Unscrew the nut on the line coming from the fuel tank, the filter is in the top of the line. There is also a filter on the back of the nozzle accessed by removing nozzle and unscrewing it from the fuel tube. if there is a good fuel spray, but no spark, probably the high voltage transformer is bad. Most heater brands use the same transformer so take the old one with you to a heater dealer and have it checked/replaced.

Feb 03, 2010 | All-Pro Kerosene Garage Shop Heaters - All...

2 Answers

I have a 125t and the igniter works,it is getting fuel and still won't lite. Can you help?

I have a 125t and the igniter works,it is getting fuel and still won't lite. Can you help?

Nov 11, 2009 | Reddy Heater-170,000 BTU Kerosene Deluxe

2 Answers

Hear ignitor clicking but unit doesn't light

the clicking indicates a spark plug ignition. see if the spark is created across the spark plug gap. if it is then check the alignment of the plug in the nozzle spray pattern. if there isn't any fuel flow then all the clicking ain't gonna make any difference in the world!

Oct 13, 2009 | Reddy R115DT Oil Filled Utility Heater

2 Answers

70,000 BTU Ready Heater

If...the air pump pressure is right, the ignitor glows, the fuel is hitting the ignitor, then the unit will have combustion......unless.....
  1. there is an air leak on the pressure line
  2. there is a vacuum leak on the fuel line
  3. there is a leak at the nozzle adapter
  4. there is a restriction either in the nozzle or the fuel filter
  5. the nozzle is worn and is spraying fuel rather than fogging fuel

Feb 09, 2009 | Reddy Heater-70,000 BTU Kerosene w/T'stat

1 Answer


This might help, check behind the ignitor for the sensor eye if it is dirty the ignitor will shut off, the set screws are very sensitive be sure they are set properly ( not to much fuel or air )

Feb 07, 2009 | Master Heaters Master B115DT 115,000BTU...

1 Answer

100,000 btu therm controled heater

What did you set the air pump pressure at? This is critical on heaters with Hot Surface Technology. Setting the pump pressure is always the FIRST place to start troubleshooting on these heaters.

Here are some things that can prevent ignition even though there is fuel & glow:
  1. wrong air pump pressure
  2. the nozzle is restricted & distorted not allowing fuel to contact the glowing ignitor
  3. the nozzle is worn. It should produce a cone of fog, not a spray.
  4. there is water in the tank below the fuel.

Oct 23, 2008 | Reddy Heater-70,000 BTU Kerosene w/T'stat

1 Answer

Won't light

My suggestion would be to clean the nozzle and the fuel lines. Make sure after they are clean you have a good mist from the nozzle.

Mar 18, 2008 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

Reddy Heater Model#R165AT Troubleshooting

the igniter turns on and if there isn't any fuel flow, will shutdown and go into "lockout." check you have enough fuel in the tank. if YES then take your unit apart and replace the nozzle. there's a bronze filter in the nozzle. mounted on the back of the fan motor is an air generator. this air generator makes about 3.6 lbs of air pressure to pump up fuel to the nozzle from the tank. the nozzle acts like a venturi and creates a suction for the fuel.

Nov 17, 2007 | Heating & Cooling

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