Armstrong Ultra sx 80, pilot light lit, but burner does not light

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howardarnold

Dec 13, 2008, 04:41 PM

Armstrong Ultra sx 80, pilot light lit, but heater doesn't turn on

hixton

Dec 13, 2008, 05:09 PM

Try cleaning the sensor thats the rod in the flame if that doesn't work you may need a tech to look at it .

progunr

Dec 13, 2008, 05:30 PM

If it has a thermo-couple, try replacing that, if it does not have one, I have no clue.

MarkwithaK

Dec 13, 2008, 09:50 PM

Is this a standing pilot?
If the pilot remains lit then your thermocouple is probably fine. If it were bad then your unit wouldn't hold a pilot. Is the valve in the "ON" position?

wmproop

Dec 13, 2008, 10:01 PM

is there power (24 volts) going to the gas valve at the time it should be opening up to send gas to the burners ?