Question about Heating & Cooling
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Posted on Jan 02, 2017
Could be a couple things. First and easiest is to check your intake combustion air supply. If it is blocked by anything or just not enough flow, it will put out the flame. Next would be the flame sensor, usually a temperature probe near the flame front. If it's not reading an increase in temp within a pre-programmed time, it will kill the flame. It can be checked with a multimeter.
Posted on Jan 25, 2008
This sounds like a bad heat exchanger. It is possible that you do not see the crack because the crack is closed when the heat exchanger is cold (or room temp). Allow the furnace to heat up, this will allow the expansion of the crack. Turn the power off and examine the heat exchanger while it is still hot.
Posted on Apr 10, 2009
is fan working? if so check the small tube from fan to pressure switch this sometimes will be lose. if fan is working and tube is connected you can check to make sure switch is good by disconnecting hose from fan housing ,start unit **** on hose & hold end so it keeps a vacuum. if everything works than you need to replace fan motor & housing
Posted on Oct 20, 2009
In the burner compartment opposite of the ignitor is the flame sensor. seems to be dirty. one screw holds it in. Remove and clean with a wire brush.
Posted on Nov 21, 2009
The first thing I would do is make sure the flame sensor is clean, this is a metal rod immersed in the burner flame on the opposite side of the igniter. If too much oxidation builds up on it, it will not allow the burner to stay lit. To clean, just turn off furnace and remove flame sensor and clean with steel wool and then reinstall. If this does not solve the problem there may be a problem with the gas valve.
Posted on Nov 08, 2012
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