Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: I have a Ruud deluxe
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
replace the stat. turn the power off to the burner, buy a new stat, keep track of what wire went to R and what wire went to W, prob red and white, if cooling youll also have a g and y! but stat is shot
Posted on Aug 06, 2009
check the thermocouple is tight in to the valve , condtion of thermocouple could need changing , is pilot stong blue flame could need cleaning .
Posted on Feb 06, 2011
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