Thorn Apollo (Heating Boiler)

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Old 10-04-07, 07:46 AM
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Thorn Apollo (Heating Boiler)

My Pilot light will not stay on even when the Room and Heating stats are calling for heat. It lights OK, but as soon as the boiler stat takes it off to give time to circulate the heated water the pilot goes out. Is this likely to be the Thermocouple, and if so how is it changed?
 
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Old 10-04-07, 12:53 PM
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Originally Posted by John H. View Post
My Pilot light will not stay on even when the Room and Heating stats are calling for heat. It lights OK, but as soon as the boiler stat takes it off to give time to circulate the heated water the pilot goes out. Is this likely to be the Thermocouple, and if so how is it changed?
you have a standing pilot? IOW- the pilot is normally on all the time? If so, the culprit is usually a bad thermocuple and/or dirty pilot burner. Do you see a thin capillary coming from the pilot burner back to the gas valve? Then at the gas valve it's threaded in? Replacing it is simple. Turn the knob on the gas valve to off, unthread the t-couple at the valve, detach it from the pilot burner, [they usually slide into and out of the pilot burner], install the new one and relight the pilot. You might want to also blow out the pilot burner itself with one of those cans of compressed air.
 
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