Question about Procom ML060HPA Heater

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Heater won't light

Pilot light works fine but regardless of how long I hold down the light pilot light button, when I try and move the control to ON, the pilot light decreases then goes out and the heater does not light.  I have installed a new regulator on my propane tank but that did not help.

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YOU HAVE A BAD THERMOCOUPLE. IF YOU LOOK AT THE FLAME you should see a little match size piece of gold metel connected to a metal tube like then screwed into the gas valve. what happens is when you light the pilot, the gas heats up one end of the thermocouple and the other end changes that heat into microvoltage. the gas valve senses the microvoltage , knows the pilot light is lit then opens the main gas valve. when they go bad they cant send voltage to valve and th valve locks out. you always have to start at off. then depress valve button and turn to pilot and light it. hold button down 3 minutes then turn to full open or main the thermocouples are cheap, call supply houses or service companoies till you find one that will sell you one. unscrew the thermo couple from the valve with a little wrench unwravel the excess tubing , size of a pencil lead in diametor, then the probe part usually slids up through a spring like holder, note position of old sensor before reoming. get end half of new sensor into good pilot flame. reuae old retainers or new ones that come with new t couple.

Posted on Oct 09, 2008

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