I HAVE A RUUD SILHOUETTE II GAS FURNACE. The glow rod glows bright, the fan whirrs for 30 seconds there is a click and nothing happens...the fan stops. No flame...nothing.??
Heating & Cooling - Ruud - UBHC Air Conditioner
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Answers & Comments
This can be a few things. tonight, i fixed one with the same symptoms and it ended up being the gas valve was bad and the gas pressure on the outlet side was only 1 in water column on an LP furnace. That is one thing and would have to be checked with a manometer. The other is the board may not be sending 24volts to the gas valve telling it to open. hope this helps