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Desa unvented propane log heater pilot will not stay lit

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Check to make sure that the end of the thermocouple is in the flame. This is the hot junction of the thermocouple and it the difference in temp that create the millivolts to operate the gas valve. If it is in the flame, replace it and if a new thermocouple doesnt fix it, you need a new gas valve

Posted on Dec 09, 2009

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Posted on Jan 02, 2017

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I NEED MANAL FOR GAS LOGS #LDL3924PRA OR LDL3924PR


I have the LDL3924 Propane model with Nova Remote system.
My pilot back fired recently and wouldn't work. I turned off the gas, Bought a can of air , Used air to Clean Pilot Didn't work. So I just replaced Desa part 103778-01 also listed as pp225. Do a search for Desa 103778-01 and see a picture. Bought mine from S.A.W. Inc. on ebay about $80.

Jan 29, 2013 | Heating & Cooling

1 Answer

I have a desa gas log heater when the heater lites and goes out the pilot lite goes out also


I would start with cleaning the Pilot ODS Assembly and also reseating the thermocouple.

Here is a link to cleaning instructions.
http://www.allpartsinc.com/mmAllParts/Others/Reseating%20Instructions.pdf

Oct 08, 2012 | Desa International Unvented Gas Space...

1 Answer

The pilot light will not stay onit is desa propan fire place


HI clean the pilot light might be too small check or replace the thermocouple

Jan 17, 2010 | Desa International Unvented Gas Space...

1 Answer

Pilot light won't light on ventless fireplace


Ventless Gas logs, Vanguard, VS30PR. Propane gas
Pilot light stays lit various times, sometimes for several days then other times for a few minutes. Lights best when temp outside is below freezing. Pilot flame appears to receive too much air. How do you adjust the pilot flame? Is this done using two screws marked A & E? Do you have suggestions?
Thanks,
Ed

Jan 07, 2010 | Desa International Unvented Gas Space...

1 Answer

I have a Martin ventless gas log fireplace. I


Sometimes when you turn a gas heater off for some time, if the source tank has been turned off, the line will bleed the propane and the line will contain mostly air. This is especially true if the supply line is long. In order to light the pilot, you will have to hold the pilot lighting button down for a while (a full minute or longer, depending on the size and length of the supply line) before pure propane arrives at the pilot light jet. You should keep a lighted lighter at the jet so that when the gas arrives, the lighter will light it. After the pilot lights, you will have to keep the button pressed long enough for the thermocouple to get hot enough to set the pilot to stay on. When it is hot enough, you should be able to release the pressed lighting button and the pilot should stay on. If it does, you should be able to light the heater. If the pilot jet never lights, gas is not getting to the regulator. If the pilot will not stay lit after a period of time waiting for it to heat the thermocouple, the thermocouple or the regulator may be bad and need replacement. :-)

Jan 03, 2010 | Desa International Unvented Gas Space...

1 Answer

I have a Martin ventless gas log fireplace heater and can't get the pilot light to light. In the past, I've had problems keeping it lit, so I've kept pilot lit all year. The other day I successfully used...


You should the value there should be a pilot ajustment screw
some times it is hidden under another screw but should be close to where the pilot light line hooks to the gas value

Dec 12, 2009 | Desa International Unvented Gas Space...

1 Answer

I have a set of propane gas logs. The pilot light


Check the connection of the thermocouple or replace it if connections are tight.Pilot safety valve may be badreplace gas control valve.

Oct 24, 2009 | Desa International CCL3924PTA 24" LP Gas...

1 Answer

My vent free Desa natural log will run for a short


it is likely you have dirty O2sensor, it is incorporated into pilot assembly.turn unit off,use compressed air in a can and blow into spot where pilot flames comes from.this will fix it in most cases.in a small % of time entire pilot assembly needs to be taken apart and cleaned

Jun 25, 2009 | Desa International Unvented Gas Space...

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