Question about Reddy Heater-170,000 BTU Kerosene Deluxe

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I have a 125T, and it has the same problem. I pulled the photocell out and taped it to a small flourescent light and it stay in operation. I guessing the photocell is not putting out enough volts.

Where can you get a new one?

Posted on Feb 13, 2008

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If you can put an ohm meter on the photocell it should show roughly 1000 ohms in normal ambiant light. Cover it and see that it responds by going a lot higher. Check connections from the photcell to the control.

Posted on Dec 31, 2007

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Runs for 20 seconds and quits

If the heater has been working normally, but has now suddenly developed this problem, it could be caused by a dirty photocell, clean with a soft tissue. In a dirty condition the photocell can't see the light of the flame, therefore it tells the control PCB the heater is not burning, and it shuts down. If it is clean, then it becomes more difficult to identify the problem, as long as the ignitor is working properly, it maybe caused by the PCB itself, or the photocell sensitivity may have become reduced, and it needs to be replaced.

Mar 02, 2015 | Master Heaters Master B115DT 115,000BTU...


Reddy Heater - Troubleshooting Torpedo Heaters

If you have a Torpedo or Salamander Heater that is giving you headaches then you need to learn to figure out why it is not working. Here are some things to look for to help you get heating again.

Your heater has a photocell that is always looking for a flame that is nearly perfect. If the flame is going crazy and is not steady or is not even the right color the electronics will shut your heater down.

Things to check:

  1. Is the pump pressure correct? Check the specs for your particular unit as all units can have different pressure settings. This setting is VERY critical for proper operation.
  2. Check the fuel for contamination, this can change the flame color or plug the pickup tube. Water just don’t burn very well.
  3. Check that the igniter is warming up or that the spark plug is sparking. Check gap on plug if equipped.
  4. Check the nozzle to make sure it is not worn. It should be fogging the fuel and not spraying it. Use compressed air to blow out the nozzle. Replace the nozzle if in doubt.
  5. Check for any air leaks in the pump, nozzle, fuel pickup line or air lines. Any cracks or such, replace. If it runs with the cover off but not with it on then the nozzle is bad. Soapy water can help find leaks, but watch the electrical parts.
  6. Photocell may be dirty or defective. Clean the photocell or replace if needed.
  7. Ignition control board may be defective. If everything else check out then it may be the board.
  8. Clean lint filter. Restricted air flow will make problems.
  9. Air pump may be worn or defective. If there are no leaks and you can’t get air pressure then replace air pump. The air pressure pulls the fuel out of the tank so that is why air pressure is so critical.

This should give you a few things to check to help get your heater working again. There may be other issues that are not covered, but this should cover many of the basic things that could go wrong.

on Jan 06, 2010 | Heaters

1 Answer

Reddy repair center

There are four possible answers to this problem, if the heater starts normally, runs for a few seconds or minutes and the shuts down but was still running normally at the time of shut down, this could be caused by the photocell, also known as the flame out control. This safety device may be failing, shutting down even though the heater is working normally, check the operation of the photocell. The second cause may be partial fuel filter blockage, the heater is effectively starving itself of fuel, so the flame blows out, hence the puff of smoke, and then shuts down on the safety cut out. Third cause, if this model has a compressor at the rear of the motor, the problem could be low pump pressure, caused by wear or contamination of the carbon blades, this would cause the wrong amount of fuel to be syphoned up, with weak fuel mix the heater may blow itself out and shut down. The fourth cause, perhaps indicated by the puff of white smoke, is contamination of the fuel with water, water will cause the white smoke and also is indecated by white residues or a power like substance on the end plate of the heater which glows red hot when burning.

Jan 24, 2014 | Desa International R40 Utility Heater

1 Answer

I am having trouble getting my Dayton Portable Oil fired Heater Model # 2E218E to keep running.

May be the primary control if you already replaced the photocell. Make sure the photocell is in direct line of sight with the flame.

Jan 04, 2014 | Dayton Heaters

1 Answer

Reddy heater runs but not consintently shuts down and have to restart it. model 165DT

Shuts down in 5 seconds? If so, it is supposed to. If the flame is not perfect. Read on..

The ignitor (glowbar) only glows for 5-7 seconds- just long enough to create combustion. Once the flame starts- the flame must keep itself going. So if at anytime the flame goes out- it stays out- there is nothing to restart it.

What most people don't realize is that the photocell is looking for a flame with perfect color, which means the heater is not emitting pollutants. If the flame runs too rich or too lean (polluting) the photocell shuts the unit down. No self re-start.

Start troubleshooting by setting the pump pressure. Pump pressure is directly related to fuel delivery. Poor fuel delivery equal poor flame equals shutdown.

Troubleshooting tips

Oct 25, 2011 | Heaters

1 Answer

Ready heater r110 I have replaced nozzle, filers all, cleaned sensor, runs some times for 30 sec shuts down

The R110 is a spark plug heater, as you know. It does not have the sophisticated electronics that the newer heaters have.

My guess: SP heater runs 30 seconds & shuts down- bypassphotocell. If it runs fine, then the photocell is defective.The test is simpleIf the photocell proves to be good follow these troubleshooting tips

Oct 13, 2011 | Reddy Heater-30-55,000 BTU Variable

1 Answer

Have a reddy heater r200bt starts then shuts off 10seconds later does not appear to ignite

The heater has built-in safety measures that shut it down within 5-7 seconds if the photocell does not see a perfect flame. In your case it sees no flame, so it shuts the unit down. You must troubleshoot to find out why there is no combustion. The problem could be as simple as a broken ignitor, incorrect air pump pressure not delivering the correct amount of fuel, or you may have electronics problems.

Eliminate all possible fuel delivery problems first, before moving on to electronics. These heaters are not complicated, but you must understand the principle and be a patient troubleshooter.

Click here to Follow tips

The principle;
Here's the principle in a perfect operational heater:
  1. Plug the unit in
  2. The motor starts
  3. When the motor starts the fuel starts to flow, because the air pump is directly connected to the motor shaft (then the air sucks the fuel from the tank- at the nozzle adapter- a venturi effect and fuel/air mix in the nozzle)
  4. The ignitor (glow bar) turns red
  5. The photocell starts looking for a flame in the chamber
  6. IF the COMPLETE system is performing to factory specs then there is combustion
  7. Then, after 5 seconds the ignitor no longer glows and the flame continues to burn on it's own and it should burn until the fuel supply is gone
  8. The photocell takes over and monitors the flame for color. Too rich/lean and the flame color changes, a signal is sent to the computer and there will be a shutdown
Now, these heaters are computerized and the computer wantsto find a system that is operating at 100%. At less than 100% the system shuts down for safety andenvironmental reasons. Simply stated- the computer is looking for a reason toshut the unit down because that's its job. I am going to list some of the reasons that will cause ashutdown in the order of incidence, in our shop anyway.
  • Water in the fuel - people love to buy parts... but this is a free fix, just drain the tank. Shine a flashlight in the tank & look for water droplets & trash.
  • The pump pressure not set to specs. There is not a fudge factor here. Instructions are at . The air pumps on the old style heaters could be adjusted to suit the operator's nose. If the heater smells just adjust the pressure a little until it smells good. Not so with the new heaters- you adjust to suit the computer.
  • Air leak. If there is a crack in the plastic end cover, air line, fuel line, or nozzle adapter. These conditions create a lean mixture--poor flame color
  • Defective nozzle. Desa warns about annual replacement in their manuals. Depending on annual "hours used" this may or may not be your problem.
  • Defective control board and/or photocell. Eliminate all of the above reasons for your heater's failure before blaming the electronics.

Aug 29, 2011 | Desa International Reddy Heater R200BT...

2 Answers

Furnace won't stay running

Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
• Locate and correct gas
• Check front cover
pressure switch
operation (hose, wiring,
contact operation).
Correct if necessary.
• Replace or realign
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
• Verify proper induced
draft blower performance.

Nov 23, 2008 | Goodman GMS90703BXA Heater

2 Answers

Troubleshooting reddy heater 115,000btu

runs for awhile shuts down with a big puff of smoke comes out poured diesel 911 thought i had water in diesel fuel cans nothing help need solution ASAP

Oct 30, 2008 | Desa International ReddyHeater® R115DT...

1 Answer

Gas wall heater

the R70ET is not a wall heater but a bullet style torpedo heater. it runs for a while then shuts down. first check that the photocell is clean. you'll need to unbolt the top cover. when pointing it make sure it "sees" the flame in its holder. if it still shuts down replace the photocell. the site www [dot] desatech [dot] com is the same place I get parts from for heaters.

Dec 03, 2007 | Reddy R70ET Utility Heater

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