Question about Reddy Heater-30-55,000 BTU Variable

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Reddy heater has a spark but does not light up

Does any one know what the issue would be. I get the kerosne spraying through the nozzle and see the spark plug sparking, but no flame. I replaced the photocell still nothing.

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Make sure you put the cover back on or you wont get the right air mixture from the fan.

Posted on Jan 09, 2009

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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

Is there supposed to be flame coming around the cone of a 115,000 btu reddy forced air kerosne heater?


no. the flame should be behind the cone. If it passes the cone, this means that there is too much air. simply turn the air pressure screw until the flame no longer comes beyond the cone.

Nov 27, 2010 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

Have a rt50 reddy heater and it doesnt ignite the plug has spark and it sprays fuel just doesnt seem to want to start burning


the fuel will not burn in a liquid form, only a vapor, so it must be mixed with the proper amount of air as it leaves the spray nozzle. You may want to take it apart and gently clean out the nozzle with a soft wire brush.

Jan 06, 2010 | Heating & Cooling

3 Answers

I have a reddy heater 200t and i can not get it to do any thig but the light does come on at the switch


As stated by 1132ded.jpg SRF518 The light at the switch indicates power to the switch- and that's all. You must start troubleshooting by checking current flow PAST the switch. The problem could easily be a defective switch or a defective thermostat.

Oct 20, 2009 | Reddy Heater RLP100 Portable Forced Air...

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

Reddy heater runs then stops


it's the ignitor itself, if everythingelse is working or new then your just not getting enough spark. Also check your air lines as they do tend to get brittle and if your not getting enough air it won't light either.

Jan 27, 2009 | Reddy Heater-30-55,000 BTU Variable

1 Answer

No spark to igniter


The ignitor does not spark- it glows.

Dec 22, 2008 | Reddy Heating & Cooling

1 Answer

Reddy Heater runs but will not ignite with bonnet attached.


First, let me say that the general principal of fuel delivery ***to the spark plug*** depends on several things.
  1. Proper air pressure at the nozzle (provided by the rotor/motor)
  2. Proper “fuel pattern” at the nozzle (provided by the rotor/motor/nozzle)
  3. Proper amount of ***air & fuel*** at the nozzle (provided by the rotor/motor/nozzle)
  4. Proper ***air flow (cfm) through the combustion chamber (provided by the fan blade/motor)
  5. Proper rpm’s of the motor, which affects all of the above.

On your heater the first step is to set the air pressure to specs. Instructions are on the www.reddyparts.com website. This pressure setting directly affects fuel delivery & fuel atomization

This nozzle rule will only apply if everything is correct as far as fuel delivery applies. The pump pressure must be correct- not almost correct. Set the pressure with a low-pressure gauge that registers12-15 psi max. A gauge with a higher scale just will not read close enough to satisfy the system. If the pressure is not correct, the above rule will not apply. Instructions for setting the pressure can be viewed at http://reddyparts.com/pressure.htm.

  • Next, if the fan is OK (correct & intact) look at the NOZZLE. DESA recommends annual replacement of the nozzle, which is a wear item. Naturally, annual usage varies, so, wear will depend on annual usage. A worn nozzle produces a cone shaped SPRAY rather than a cone shaped FOG. A spray drowns the spark, where a fog gets ignited, provided it contacts the spark. ALSO, the pattern from a worn nozzle can completely miss the spark (combustion??? Hardly!). When the top is lifted the change in airflow allows a false correction in the combustion chamber, allowing combustion, but when the top is replaced the flame is extinguished. A restricted nozzle or a restricted fuel filter will also distort the fuel pattern and create the same symptom. Also, like the fan blade, make sure that the correct nozzle is installed. Nozzles get swapped, too.


Dec 12, 2008 | Reddy Heating & Cooling

2 Answers

Reddy heater


getting fuel and spark it HAS to light unless there is water in the fuel. does fuel spray out of the nozzle?

Dec 08, 2007 | Heating & Cooling

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