Question about Dayton E51 Oil Filled Utility Heater

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Heater wont ignite. Has fuel coming out front of

Heater wont ignite. Has fuel coming out front of heater. Also has spark. Could the plug not be hot enough to ignite fuel?

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If the spark plug is sparking it is hot enough to lite the fuel.is ther dirt in fuel tank???is there water in the fuel???? what is the air pressure set at????is the nozzle clean and spraying correctly?????any of these will cause the heater not to fire.not the spark plug.

Posted on Feb 23, 2009

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2 Answers

Heater blows smoke out front, wont ignite...please help!


Two things cause it ,No fire at Spark plug or low air pressure

Jan 22, 2011 | Reddy Kerosene Heater with Thermostat:...

1 Answer

I am having a problem with my 170K BTU unit. The bearing went out and I replaced it. At the same time the unit is spraying fuel but won't light/ignite. We are in the middle of an artic front and I need...


Remove the top and turn the heater on. Look for the igniter and make sure it is working. I don't know which type you have, but it could be the spark plug type or may be a HSI (hot surface igniter which will just glow until the heater starts). If the igniter isn't working, you may need to clean the sparkplug and set the gap. You can also check the transformer for the igniter. If it is the HSI type make sure it isn't broken off. Also check the flame sensor.

Jan 11, 2011 | Dayton (3VE49) Oil Filled Liquid Fuel...

1 Answer

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

My reedy heater pro 110 blows fuel out the front but does not ignite and then shuts down


The Pro 110 comes in 2 different technologies. The true model (examples: R110, RHD110T, etc) designates which technology your heater has. Rather than ask for clarification I am posting links to Troubleshooting Tips for BOTH types. You must investigate to see if your heater is the Spark Plug technology or the HSI (glowbar) technology.

Troubleshooting greatly differs between the 2 types.

Spark Plug Tips
HSI Tips

Nov 15, 2009 | Heaters

2 Answers

Heater turns off leaving lots of smoke and is hard starting


If this is a kerosene heater,the wick is most likely not adjusted up enough,or the wick is contaminated.The fuel could be contaminated also.Remove the old wick and replace it,and refuel it with clean kerosene,after you pour the old out.

Oct 14, 2009 | Heaters

1 Answer

Kerosene Reddy Heater, fan comes on, but it won't ignite, it just blows kerosene out the front. There is no electricity getting to the plug. Please reply soon, I need it tomorrow!! Thanks


Your description does not leave much to go on, because you don’t state the model heater that you have. You see, there are 2 different technologies that come into play on portable kerosene heaters. First there is the older version spark plug type heater, and, second there is the newer computerized type with Hot Surface Ignitor (HSI) technology.

Since you state "There is no electricity getting to the plug", the KEYWORD here is PLUG. I am going to assume that you have a spark plug type heater. NOTICE: if your heater has HSI technology- disregard this post because it will not apply.

Causes for "no electricity to the plug":

  1. no electricity to the unit
  2. a defective Safety Control (reset)
  3. a defective photocell
  4. a defective Ignition Control (transformer)
  5. loss of ground to the Ignition Control

I am including a link to some troubleshooting tips for spark plug type heaters. These heaters are relatively simple, but, be careful. Stay away from the fan and take precautions from the obvious shock hazards. Troubleshoot each of the above until you find the problem.

Good luck!

Dec 04, 2008 | Reddy Heater-30-55,000 BTU Variable

3 Answers

Won't fire up


Silvercliff- since you use the word “plug” I am assuming that you have a spark plug type heater, not the new technology HSI type (hot surface ignitor) that uses a glowbar and an onboard computer.

Reddy heaters are simple to troubleshoot, but you must understand how the system operates.

Since you state that the heater produces a fog at startup indicates that you are getting “some” fuel.

Obviously, the fuel is not igniting.

Now, you must determine if there is any spark. Is a good spark arcing across the electrodes on the plug? If not, is spark being produced by the Ignition Control unit (aka spark box, transformer) ? If not, is the Safety control (reset) sending electricity to the Ignition Control unit?

If there is a good strong spark at the plug, then you are having a fuel delivery problem, even though there is “some fuel”. Understand that the amount of fuel being delivered to the nozzle is DIRECTLY related to the air pump pressure. If the air pump pressure is not correct, then the fuel delivery is not correct. Setting the pump pressure is not difficult. Pump pressure is CRITICAL. Instructions for setting the air pump pressure can be found at www.reddyparts.com .

If the air pump pressure is correct, then check the following:
  1. Cracked air line preventing correct pressure at the nozzle.
  2. Cracked nozzle adapter preventing the fuel from being SUCKED from the tank.
  3. Clogged fuel filter.
  4. Restricted or worn nozzle. The fact that your heater is a spark plug type heater indicates that it has some age on it. DESA recommends annual replacement of the nozzle. Are you using the original nozzle? Worn nozzles produce a SPRAY. New nozzles produce a FOG. The nozzle produces a cone shaped fog. If the cone is missing (not hitting) the spark, for some reason, then there will be no ignition.
  5. Finally, and don’t laugh, is your fuel 100% kerosene or diesel? Water sinks to the bottom of the tank. The heater draws fuel from the bottom. If there is an inch of water on the bottom…….., well, water will not ignite.

I hope this helps.

Aug 28, 2008 | Reddy Heater-30-55,000 BTU Variable

2 Answers

When i turn on the heater it just blows smoke


according to desatech who makes reddy heat, the air compressor on the back of the fan should put out no more than 3.5 psi to the nozzle. you could also check the air path through the combustion chamber. sounds to me that the nozzle isn't atomizing the fuel but its coming out in a stream. the nozzle is supposed to make a conical pattern if the air pressure is correct.

Dec 13, 2007 | Dayton E52 Utility Heater

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

2 Answers

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.

Nov 18, 2007 | All-Pro Kerosene Garage Shop Heaters - All...

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