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I have a Kenmore 110.7481220 Gas Dryer. Gas ignites when cycle starts, but will not re-ignite to maintain temperature until dryer cools completely and cycle is restarted. I can see the igniter coil glow every minute or so trying to ignite, but instead of an ignite, there is a click and the igniter just goes out with no fire. Process repeats until cycle is stopped and dryer cools.
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Check the following areas to combat this issue. the most common problem spot will be a blown Thermal fuse.
1. Gas valve coils Igniter glows, then shuts off without igniting gas - the problem is probably with defective coils (black, located on top of the gas valve). It is recommended to replace all coils (usually two or three) if found defective.
Note: Sometimes the whole gas valve may be defective, thus not letting the gas out. However, this problem is not common.
2. Thermal fuse Most dryers have a thermal fuse, which burns out when the dryer overheats, in which case the dryer will either not run at all or stop heating. The fuse is usually located on the vent duct, inside the dryer. A blown fuse will show no continuity when measured with a meter. Before replacing the fuse, make sure the blower wheel is not broken or clogged, and there is nothing blocking the venting.
Note: It is recommended by most dryer manufacturers to replace a hi-limit thermostat when replacing a thermal fuse.
3. Igniter Igniter may burn out or break. Replace the igniter if found defective.
Note: Igniters are very fragile and break easily. It is recommended to handle the igniter only touching the ceramic part of it (usually white in color).
4. Flame sensor (or radiant heat sensor) Replace the sensor (located near the igniter) if found defective.
Check the following to address your issue. check each section of the dryer thoroughly.
1. Gas valve coils
Igniter glows, then shuts off without igniting gas - the problem is
probably with defective coils (black, located on top of the gas
valve). It is recommended to replace all coils (usually two or
three) if found defective.
Note: Sometimes the whole gas valve may be defective, thus not
letting the gas out. However, this problem is not common.
2. Thermal fuse
Most dryers have a thermal fuse, which burns out when the dryer
overheats, in which case the dryer will either not run at all or
stop heating. The fuse is usually located on the vent duct, inside the
dryer. A blown fuse will show no continuity when measured with a
meter. Before replacing the fuse, make sure the blower wheel is not
broken or clogged, and there is nothing blocking the venting.
Note: It is recommended by most dryer manufacturers to replace a
hi-limit thermostat when replacing a thermal fuse.
3. Igniter
Igniter may burn out or break. Replace the igniter if found
defective.
Note: Igniters are very fragile and break easily. It is recommended
to handle the igniter only touching the ceramic part of it (usually
white in color).
4. Flame sensor (or radiant heat sensor)
Replace the sensor (located near the igniter) if found defective.
Chances are your igniter has gone bad. It must pull atleast 3.2 amps to open the gas valve and ignite the gas. A new igniter could probably purchased for 20 or 30 dollars.
The gas burner assembly uses solenoid coils in a circuit with the flame sensor to safely ignite the burner. When the dryer starts a heated cycle, the circuit through those components is energized. The igniter glows until it reaches the proper temperature to ignite the gas, at which point the flame sensor trips open and the current flowing through that circuit is diverted to the gas valve coils so the gas valves open, and the burner lights and continues to burn. If the solenoid coils on the gas valves fail, the gas valves won't open for ignition. If the gas valve coils are weak, the burner lights during the initial ignition sequence from a cold start but it fails to light the burner on subsequent ignition attempts. In this situation, replace the valve coils. I Had the same problem with mine and I fixed for like $25.00 US. Its not hard to do look at the video. Either buy your part from them or to get it fast and not out of this world go to "repairclinic.com
Cause 1Thermal Fuse
The thermal fuse is a safety device designed to protect the dryer from overheating. The fuse is located on the blower housing or at the dryer's heat source such as the heating element on electric dryers or at the burner on gas models. The fuse should be closed for continuity meaning it has a continuous electrical path through it when good. If overheated the fuse will have no continuity meaning the electrical path is broken and the fuse has blown. A multimeter can be used to test it for continuity. Be aware that a blown thermal fuse is an indication of a restricted exhaust vent from the dryer to the outside. Always check the dryer venting when replacing a blown thermal fuse.
Parts
Cause 2Gas Valve Solenoid
Gas dryers have two or more gas valve solenoid coils. The gas valve solenoids open the gas valve ports to allow gas to flow into the burner assembly. If a gas valve solenoid fails, the dryer won't heat. To determine if one or more of the gas valve solenoids has failed, check the igniter. If the igniter glows and goes out but does not ignite the gas, the gas valve solenoid is defective. If one or more of the gas valve coils are defective, we recommend that you replace them as a set.
Parts
Cause 3Igniter
The igniter uses heat to ignite the gas in the burner assembly. If the igniter is not working, the gas will not ignite, preventing the dryer from heating. To determine if the igniter has burned out, use a multimeter to test the igniter for continuity. If the igniter does not have continuity, replace it.
1. Gas valve coilsIgniter glows, then shuts off without igniting gas - the problem is probably with defective coils (black, located on top of the gas valve). It is recommended to replace all coils (usually two or three) if found defective.
Note: Sometimes the whole gas valve may be defective, thus not letting the gas out. However, this problem is not common.
2. Thermal fuse Most dryers have a thermal fuse, which burns out when the dryer overheats, in which case the dryer will either not run at all or stop heating. The fuse is usually located on the vent duct, inside the dryer. A blown fuse will show no continuity when measured with a meter. Before replacing the fuse, make sure the blower wheel is not broken or clogged, and there is nothing blocking the venting.
Note: It is recommended by most dryer manufacturers to replace a hi-limit thermostat when replacing a thermal fuse.
3. Igniter Igniter may burn out or break. Replace the igniter if found defective.
Note: Igniters are very fragile and break easily. It is recommended to handle the igniter only touching the ceramic part of it (usually white in color).
4. Flame sensor (or radiant heat sensor) Replace the sensor (located near the igniter) if found defective.
gas dryers would have an igniter to start the flame. check it first to see if its still ok. be carefull in handling them, they are very fragile. check also for availability of gas. could have a closed valve.
That model does not have a pilot light. It has an electronic ignitor. If it is not igniting, either the igniter is not getting a signal to ignite, the igniter is burned out, or the gas solenoid is broken. Probably the igniter is burned out. It is item number 3018 at RepairClinic.com.
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