11 year old kenmore elite gas drye stopped working initial diagnosis: burner would light but would shut off in 3 or 4 minutes
Jay W. • Dallas, TX • April 05, 2015
Appliance: Model 110.74972300
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I used Fixya as an initial source describing my problem. I got two responses which were very helpful. One that the "coils" were probably the problem. Two, that the problem could be the thermostat or a thermistor in the dryer. I verified that AC was coming from the timing control, that both the two terminal and three terminal coils,the igniter and shut off thermostat all had continuity. I then applied AC directly to the coils: the two terminal coil ""clanked" and I interpreted that as the coil driving the gas valve plunger properly; the three terminal coil "buzzed" and I interpreted that as poor operation, and not driving the gas valve in or out properly. I ordered the coil kit, a ignitor kit, and a flame sensor as I considered these wear-out items and worth replacing to avoid future failure. When I installed the new coils, I was surprised that I got exactly the same response as the original coils. I figured the main gas valve assembly needed replacement. To my surprise, the dryer worked great with just the two new coils installed. The gas burner cycled on and off during the drying cycle, and my wife said that the dryer was working just like it was new. It apparently wasn't drying well for a while. Luckily, my dryer had a removable front panel, so I didn't have to remove the drum to replace the coils, as your video suggested. It was pretty hard to get the two screws off which mounted the two coils on the gas valve assembly, not much space to get a regular size P.H. screwdriver in, luckily I had a stubby, fat-handled screwdriver that allowed me to apply sufficient breaking torque to loosen the screws. I also cleaned out the accumulated 11 years of dirt and lint at the bottom of the dryer, and also cleaned the burner funnel carefully, and checked the outside dryer exhaust for leaks and lint, and there was virtually no lint. I was happy to see that you carried all authentic Whirlpool replacement parts. I also reported that the technician in your video on replacing the shut off thermostat mounted opposite the flame sensor on the burner funnel stated that the T-stat normally fails "shorted" which doesn't make sense, as that would cause the burner assy. to heat up and not shut the dryer off, which is its intended purpose.
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