Question about Desa International R40 Utility Heater

6 Answers

I have a 55,000BTU Desa Kerosene Heater Model # R55

When I pug the heater in the motor starts, but the heater will not fire or ignite? Could you give me some advice on what to do?

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  • frank_denter Feb 01, 2009

    I checked the coil out on my heater and it seems to be just OK.

  • frank_denter Feb 01, 2009

    I am going to check out the safety gas valve now. Will let you know how I make out. Thanks

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6 Answers

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You need to check if there is pressure on psi gauge, and if the igniter has spark.
There should also be a screw regulating pressure, check near to the PSI gauge, try also opening it more.
Check that the lines are not obstructed.

The safety gas valve is controlled by a thermocouple, you need also to check that one out.




Posted on Feb 02, 2009

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Drain the fuel out of it and replace it with all new kerosene....if its set for awhile the kerosene has separated and wont allow it to ignite.

Posted on Feb 01, 2009

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Possible reasons for not firing (check each)

1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle
5. Water in fuel tank
6. Bad electrical connection between ignitor
and ignition control assembly
7. Defective ignitor
8. Defective ignition control assembly
9. Defective fuel valve (Models equipped with fuel valve only)


Try this

TO START HEATER
1. Follow all ventilation and safety information.
2. Locate heater to provide maximum circulation of the heated
air. Follow all location requirements noted in Safety Information,
page 2.
3. Fill fuel tank with kerosene, #1#2 diesel/fuel oil, JET A or
JP-8 fuel.
4. Attach fuel cap.
5. For thermostat models, turn thermostat knob clockwise to the
high position.
6. Plug heater’s power cord into approved, grounded, three-wire
extension cord. Extension cord must be at least six feet (1.8
meters) long.

Note: Ignitor will preheat for five seconds,
then heater will start.

For thermostat models, adjust thermostat knob to the desired
setting.
Note: A cold heater may affect the thermostat setting.
This thermostat is a general-heating control. It is not intended
for precise temperature control. Adjust thermostat until heater
cycles at the desired setting.


also,for more details and instruction,Here is the manual

Posted on Feb 01, 2009

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HII!!! You Seem to have a problem with your safety gas valve.But first change your ignitor even if it is bad ,There must be enought resistance to open your gas valve.If you put the ignitor new then no flame then you safety gas valve is bad.Good luck..

Posted on Feb 01, 2009

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Need to clean the igniter part by opening it using a screw driver.
let me know for further assistance.

Posted on Jan 31, 2009

  • rockfixya
    rockfixya Jan 31, 2009

    here is a link for your problem>>

    http://reddyparts.com/SP_tips.htm

    hope helpfull.

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Change your heater coil it has some problem .check it if u can reapir coil then u not need to change .

Posted on Jan 31, 2009

  • kishor khatri
    kishor khatri Feb 01, 2009

    check your coils resistanse may be your coil resistanse is low.

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