Question about Desa International Blower Glow Warm Wall Heater

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My glo-warm propane heater keeps shutting off automatically-pilot and all.

My glo-warm propane heater keeps shutting off automatically---pilot and all. Plenty of propane, nothing else is different from last year and I've run it long enough that anything should be out of the line by now.

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  • jam8407 Nov 18, 2008

    Mine does fine on High and Medium, it's when I try to leave it on Low that it shuts down.

  • ndhtrhlp Jan 13, 2009

    I have a Glo-Warm 30K BTU wall mounted propane unit. Installed 3 years ago. Designed to cover approx 1000 sq feet, covers first floor of home which is 994 sq ft overall, approx 650 sq ft if I close of unused rooms to just heat living space in use.

    Unit connected to less than 8 feet of iron gas pipe, last 1 foot of which passes through wall to exterior of house. Iron pipe then connects to approx 30" corrugated line, then regulator / fitting which connects to 100LB propane tank. I have a stryofoam cover over the tank connection / regulator that I fashioned out of a cover normally used for an outside water spigot in winter, the sides are cut out. (Reason: used to have rain / snow freeze onto regulator).

    Iron line installed with a "trap" beneath the heater for debris / water, this is clear. Iron line "slopes" downhill slightly from heater as line passes through wall to exterior of house, then meets corrugated line which curves gently upwards to meet the tank (no kinks). Corrugated line does no appear to have water or debris in it.

    Operational details are as follows:
    -- unit worked flawlessly when first installed 3 winters ago
    -- unit has manual pilot / piezo igniter and variable gas control
    -- last winter, and now progressively moreso this winter, unit does not work when outside temp drops below approx 20 - 25 degrees F
    -- if outside temp is above 20 - 25 degrees F it works absolutely flawlessly, strong clean blue flame, output as if brand new
    -- unit usually has pilot, but pilot "shrinks" when you turn up the unit to "ON" , possibly due to the "draw" of feeding the main burner
    -- when very cold, pilot will ignite for a few seconds, then burn out, must wait a while to try to reignite pilot, unit rarely works to fire burner afterwards (perhaps pilot runs on propane in line, then poor volume or pressure causes it to exhaust the propane in the line before it "backfills"?)
    -- if I am using unit as the outside temp drops, flame height in the unit decreases with occasional "orange": (oxygen?) "spikes"

    Should I:
    -- replace the thermocouple
    OR
    -- replace the regulator
    OR
    -- perform other troubleshooting?

    Thanks very kindly for any assistance or advice ... J V

  • LDRunion Jan 17, 2009

    I have the same proplem with mine, bought new about 3 years ago and with 3/4 ful 100 lb tank of propane it works good for about an hour then hear a click and shuts down. I can let it set for about 1/2 hr and relite it but runs for a little bit and shuts off again. I bought 2 trermocouples but wouldn't fit, made by honeywell company. most of the time if it's above 20 degrees it also works well but under 20 when I noticed that it shuts down. Took it apart and made sure it was clean "no problems there"

    Larry (Westmoreland, TN) any sugestions my email is:

    Lonelytravler56@yahoo.com

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My heater says if the pilot light keeps going off automatically it is a safety function that means it does not have enough fresh air to operate

Posted on Dec 04, 2009

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Clean the pilot and if that does not help replace the thermocouple. Also make sure you have correct ventilation to the room as that can also cause this type of heater to shut down.

Posted on Nov 18, 2008

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