main gas valve won't open to main burner. pilot is on but furnace won't start
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Have you checked to see if you have 24 volts to the gas valve? Have you checked to see if you have 110 volts to furnace. If you do , check and see
if you have any 24 volt power any where
You could have no power to the furnace,bad transformer so no 24volt power.
If you have 24volts to gas valve and it doesn't open, then its bad
If your 110 to 24volt transformer is good so you have 24 volts, then you could
have a limit switch or roll out switch that is open. Do you have a 24volt or a millivolt gas valve? Later Paul
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs.... -
Lit our fireplace for the first time this season last night and the whole living room filled with smoke, alarm went off. Chimney was cleaned last year...
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