Question about Reddy R155D Utility Heater

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Ignition problems my reddy heater keeps burning up these ignitor modules. i can replace the module and it will work for a short amount of time but then the next time you try to fire it up the module will be dead again. do you think it could be the photocell or circuit board. thanks in advance

Posted by j_brujah2004 on

  • cuffaje Nov 30, 2007

    ignitor modules burning out like crazy dont know why



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What kind of ignition is it? spark or hot surface igniter? the photocell just detects the flame. it causes the controller to go into lockout if it doesn't detect a flame. a hot surface igniter uses 120 volts to operate, again off the controller.

Posted on Nov 26, 2007



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Deffently not the photo cell.the photo cell in this unit DOES NOT see the counts the light flashes from the flame.the circut board is more likely your problem.circut boards are around $90.00.if you have been changing ignitors at $50.00 pre shot it gets much did you pay for the heater.also quick note your heater is a desa product....... desa is in bankrupsy at this time and parts are getting real hard to find.................

Posted on Feb 11, 2009


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Related Questions:

1 Answer

Heater will not ignite

  1. Do you have a standing pilot style heater = Milivolt
  2. or is it an IID = Spark style ignitor
  3. Or... Hot surface Ignitor = glows red hot like an auto cigarette lighter?

Most common problem I have come across over the last few weeks, is pressure switch not closing, meaning - dirty filter. Try cleaning your filter: backwash or rinse cartridges.

  1. is pilot staying on, and burning well?
    1. If so, is htr's gas valve in ON position?
  2. Do you hear sparking?
    1. If No, then one of the safety switches is keeping heater from firing...
      1. Toggle switch - on/off
      2. Thermostat - turned up high?
      3. Pressure switch - closes circuit when pump comes on
      4. 2 each high limits
      5. Fusible link / roll out switch
    2. If yes, either gas valve is off, is bad or the Ignition module is bad? Some call it grey box.
      1. You will need to test for voltage at the common and MV posts of the gas valve - 24 to 28 volts. If voltage = bad gas valve; if no voltage = bad IID Module (Intermittent Ignition Device)
  3. Do you see a bright red glow in the burner tray area?
    1. If yes, either fuel supply is off, or Ignitor has worn out and the glow is not hot enough to ignite raw fuel.
    2. If no, check voltage at Ignitor - depends on make and model of heater- could be as low as 24 volts and as much as 110 volts. So... No voltage at the supply wires = bad sending component, again depend on brand and model, could be ignition module, could be circuit board?
    3. If yes voltage, bad Ignitor
      1. Again, this is if fuel supply is confirmed.
Good Luck

May 08, 2015 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

The fan works, no spark, have replaced ignitor assembly checked the high limit switch with ohm meter, room temperature switch is closed.

check for 24 volts at ignition module n pull the wire that provides the spark off the ignitor n see if it tries to arch or spark. your electrode on the pilot assembly might not be arching onto the hood of the pilot assembly. good luck!

Nov 24, 2009 | Reddy Heater RLP100 Portable Forced Air...

1 Answer

Module replaced, 2 uses later ignitor burned out, replaced ignitor, module burned out the tune of 400.00, 3 service calls and are now looking at 200.00 what?

If I understand your situation, you have already replaced the Module once, then the Igniter went out, so you replaced that, and now the Module is not working again. If this is correct, I would call the servicer and have them come out and see what they did wrong, Modules do not go bad in just a couple of uses.

I am not sure if you have any error codes, or know about the diagnostic lights on the back of the Digital Display panel, but I would first try and reset the heater. To do this you will need to turn OFF the heater by opening the right hand side door and turning the POWER toggle switch to OFF. Then find the circuit breaker that goes with the heater and flip that off. Wait between 15 and 20 minutes, then reverse the order. Circuit breaker on, heater on, then try and start the heater.

Watch for any error codes, like EO5, the heaters computer will flash a series of start up "codes" like 888, do not worry about those. If the display comes up, check the water temp that it is reading compared to what the water temp is actually. If different, the problem could be the Thermister and not the Module.

Jul 06, 2009 | Pentair Minimax NT Heater

1 Answer

No spark to igniter

The ignitor does not spark- it glows.

Dec 22, 2008 | Reddy Heating & Cooling

1 Answer

Have to replace ignitor on coleman furnace every year

The voltage regulator on the control module is sending the wrong voltage to the ignitor or the ignitor is getting wet from condensation. That ignitor should last many years. Replace the control module.

Dec 04, 2008 | Heating & Cooling

3 Answers

Viking Gas Cooktop - Ignition sparks continuously when in 'on' position

This is likely caused by either a dirty ignition electrode, a cracked ignition electrode, or a bad spark re-ignition module.

Clean and inspect the six electrodes for cracks, If that doesn't solve it order a new
Ignition module from an internet appliance dealer that carries Viking parts like Appliance Zone.

If you replace the Ignition module yourself, make sure to turn off the circuit breaker to the range/cooktop before you work on it. Also, make a drawing of where the different color leads are plugged into the ignition module before you unplug the wires and plug them into the new re-ignitor. If the unit is under one year, this should be covered under the warranty.
Viking had a recall a few years back on their ignitor modules.

Jun 03, 2008 | Cooktops

4 Answers

RM115 Reddy Heater forced air heater problem

air pressure should be no more than 3.5 psi. could be your pressure is too high and is blowing out the flame.

Dec 05, 2007 | Reddy R155D Utility Heater

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