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I have a Ruud deluxe 80 plus heater. The unit is running, the pilot light is lit, still no heat.

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Repost with more specific . motor aka fan is running?stat is set to heat and max heat? how old? general progression is as follows. stat says its cold. signal is sent to gas valve to open. gas valve looks to see if pilot is lit via thermocouple. if pilot is lit then main valve opens and burner lights. shortly thereafter sufficient heat builds up to trip heat sensor that turns on fan and blows hot air into house.many times a tripped safty causes a default fan response. aka when you show up the fan is on 24 7 . that equals a failed safety and needs a pro tech to see why saftyfailed.

Posted on Oct 18, 2008

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