Question about Desa International R40 Utility Heater

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I have a heater Model CLD3924PTA that the pilot light won't stay lite. I assuming it a bad thermocoupler. I've tryed cleaning and it make no difference. I see its all one unit with the pilot light. Where do I purchase a new pilot unit?

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If you like to keep taking it apart, its only time to bring it back to manufactures specs. A full tune-up kitat your lawnmower repair shop.

Posted on Dec 18, 2009

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3 Answers

Pilot lite won't stay lit


Thermostat flame sensor. Do you see a little rod next to the pilot? That is what tells the main gas valve that the pilot is lit and it is safe to give gas. Easy swap, and you can usually just pick up a generic one.

Apr 14, 2013 | Heating & Cooling

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Why does my pilot light on my hot water take not stay lite


It depends on many factors, including brand, type of heater, age, gas pressure, maintenance, venting, proper installation of thermocouple, bad thermocouple, air intake cleaning, if the flame is clear blue etc.
Copy following link to read more:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#pilot

Sep 20, 2012 | Water Heaters

1 Answer

I have a Dayton 3E290 wall heater that was installed new 30 years ago. The pilot light started to extinguish a few years ago. Gradually this began to occur more frequently. I've changed the...


The pilot assembly may need cleaned out and the orifice cleaned, also the gas valve may need to be replaced, to check for proper voltage from the thermocouple you need a flame source and it takes a meter that can register DC milliamps, and should be 350 to 750 millivolts. Heat the thermocouple with the pilot or other flame source and check, if OK, gas valve is weak.

Nov 02, 2011 | Dayton Gas Furnace Heater

2 Answers

Why does pilot light turns on gas burner only to have it go out about 10 seconds later? 30 to 40 sec later repeats,without lighting. What is problem? once in awhile, it will light..not often. The burner...


Hello
Sounds like the thermocouple is going bad.The thermocouple is a thin tube that runs from the pilot lite to the gas valve.
What it does is it sences the heat from the pilot lite and keeps the gas valve open to allow the pilot to stay on.
This can be easily repaird by shutting off power and gas to your heater and removeing the thermocouple from the gas valve,then unclip or unscrew it from the pilot lite area.
Any plumbing supply store or home depot or lowes should have these.

Once you get a new one,install to gas valve and pilot lite area then turn on power and gas to heater and follow pilot lighting procedure,you may need to hold gas on for 60 seconds.

Here is a picture of the thermocouple so you know what to look for.


http://thermocatalytic.com/Thermocouple.JPG
http://homerepairgeek.com/wp-content/uploads/2010/12/furnace-thermocouple.jpg

Feb 10, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Installed new thermocoupler heater still will not stay lite


Make sure the pilot light is hitting the thermocoupler, even when burner kicks in. Sometimes a dirty pilot tube will cause a weak pilot and it wont continuely hit the thermocoupler. I use air to clean mine. Hope this helps.

May 26, 2010 | RTO Atwood Water Heater - 6 Gal LP

2 Answers

Pilot lights but main burner dose not light when turned on


possibly a fowled thermocouple if the thermocouple doesn's sense the pilot flame then it will not send a signal to the gas valve telling it that its okay to open cause the pilot is lit.

Dec 28, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

I HAVE MODEL GP30 WALL HEATER. I CAN LITE PILOT BUT WHEN I TURN CONTROL KNOB UP PILOT GOES OUT AND DOES NOT LITE HEATER


The thermocoupler is bad.Replace it,or if you can adjust it to where the thermocoupler is in the pilot flame.You know you have to hold the knob down for about 30 seconds or a minute,don`t you?If the flame will not touch the thermocoupler,it will not stay lit.You can cut a piece of copper tubing,or steel tubing to slidde over the old thermocoupler to make contact with the pilot flame,and it will work,if the thermocoupler is not in to bad of shape.

Oct 17, 2009 | Heating & Cooling

1 Answer

I have a propane reddi heater and I can't get it to stay on after I light it, it won't stay on. Is there something that needs to be cleaned or replaced


Generally speaking a propane heater stays lite because the pilot stays lite. The pilot flame touches a thermocouple which produces a current which keeps the main valve open. Pilot goes out or you have a bad thermocouple or the pilot is slightly clogged (reduced heat to thermocouple) or maybe the thermocouple is not touching the flame enough. Most times when a propane heater goes out the problem is somewhere in that neighborhood. Thermocouple - pilot. I have always had luck carefully taking those parts off, cleaning, and reassembling, but check the position of the thermocouple first. Looks like a small brass rod which sticks into the flame. This is a safety mechanism to prevent the flame being blown out and leaving the gas on. Good luck

Jan 16, 2009 | Heating & Cooling

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