Question about Desa International GWP20T GLOWARM Wall Mounted Panel Heater

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Comfort glo propane ventless heater won't light

Just got a used heater, person said it worked fine. Put new battery in the igniter, It sparks fine but won't light. Can't hear any gas coming thru. Checked most obvious on off valves to and from the gas line. Nothing obvious. Had a professional in to hook up the gas line and made sure the line is turned on.
Did we get ripped off? Or is there a way to fix it. Thanks in advance for any help.

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  • oblivia Nov 17, 2008

    I think i have the same problem...but it's a gas version that came with my house, so i don't know if same applies...it says glow-warm on it and otherwise looks exactly like the picture that comes up on top of this post. I don't have the manual, but i assumed turning the knob to "pilot" and making a spark with the igniter should start it up, but the pilot does not seem to light, nor does anything else happen. It's apparently a fairly new installation and was allegedly in working order, so i am curious as to whether i may be doing something wrong. Don't hear or smell gas either. I'm kindov afraid of it, and am cold!

  • need some he Dec 07, 2008

    My heater is doing the same thing. I have done what solution #1 says to do. I can get it to ignite,but it never goes ahead and lights the whole row of flames. It's not because it's warm in the room. It nows says it's 50 in there!

    Any other ideas?

  • Anonymous Jan 11, 2009

    I have the gas comfort glow model and the pilot lights and stays lit. This model is run by a remote (All batteries are new and dials are set correctly) I hear a small click when I go to ignite the main heating unit however the gas does not turn on to the unit. Is there an override from the remote or do I need to replace something? This unit is less than 2 years old.

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I have several of these heaters in my rent houses and love them. The most problem I have is not being able to ignite the pilot with the user control igniter. Remove the screws that hold the front cover in place along with the front cover. Hold the pilot control down and ignite with a lighter. Keep the pilot engaged until thermocouple is warm enough to keep pilot gas flowing. If it will light this way then you need to blow out the pilot orifice. It seems that every year I have to go in after the summer season when the heater is off and clean the pilot/orifice lines with high pressure air. I believe spiders/bugs/dust block pilot orifice when it is not in use. You can also tell that orifice is blocked when you don't get a good blue pilot flame with pressure behind it allowing the flame to submerse the thermocouple. If the the thermocouple is not getting enought heat it will turn pilot gas off for safety reasons.

Posted on Dec 06, 2009

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Most likely the oxygen depletation sensor has failed. When it fails it cuts all gas flow as a safety precaution. Because the sensor is built into the gas flow control it is not servicable and requires a replacement. These are the weak point on all ventless gas heaters and fireplaces. I have found it easier to trash the heater than to replace the failing part.

Posted on Dec 04, 2009

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You have to turn it to pilot hold it down for one minute then push the ignitor it should light then turn it to the setting you choose and the heater will go off when it reaches the temp and come back on when it cools down always leave the pilot lit.

Posted on Nov 20, 2008

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My solution that I have is, the comfort glow heater puts off an odor; we have cleaned it when we lite it for the winter. The heater does come on and will stay lit, but the odor is uncomfortable. What can be done about the odor?

Posted on Dec 31, 2012

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