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Natural Gas heater problem

Subject: Natural Gas heater problem
From: Trevor Boicey <>
Date: Wed, 20 Nov 2002 23:48:37 -0500
   I have a natural gas heater in my garage, and today I realized it's 
still giving me problems. (it was last year too, but it got warm before 
I got concerned)

   This is a ceiling hanging model, with a pilot light, but I use it so 
seldomly I light the pilot light each time.

   So the procedure I follow is to turn on the gas valve, turn the valve 
on the unit to "light", hold down the pilot button, light the flame with 
a long match, and wait holding the button down for a painful interval 
until releasing the button no longer makes the pilot die.

   So far so good.

   So I then kick on the electrical, and the unit fires up full bore 
with fan and heat, and runs for a while. (20 minutes or so, enough to 
get the garage warm)

   However, then I notice that the flame is out, even though the 
thermostat should still have it on. The pilot light is out as well, just 
the fan is running, and it shuts off after a while too.

   Any ideas?

   I suspect something in the safety circuit is malfunctioning and 
cutting off the gas, thinking the flame is out. This might also tie into 
why it takes a long time for me to be able to release the pilot button 
before the system stays running on it's own.

   Perhaps the sensor is position sensitive, and needs a tweak? I 
confess I don't know all the basics on these systems and obviously want 
to be very careful, but it seems simple enough.

Trevor Boicey, P. Eng.
Ottawa, Canada,
ICQ #17432933
"I am disrespectful to dirt. Can you see I am serious!" - Mr. Sparkle

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