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Whirlpool Dryer Won't Stop

LG5551XTW0

The part(s) or condition(s) listed below for the symptom Dryer won't stop are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Dryer won't stop

Cause 1Air Flow Problem

If the vent is clogged or partially clogged, it will restrict the airflow through the dryer, substantially increasing the drying time. To ensure proper dryer performance, you should clean your dryer’s venting system at least once per year.

Cause 2Blower Wheel

The blower wheel draws air through the dryer and pushes the air out the vent. Clumps of lint, socks, and small articles of clothing can escape the lint filter and get caught in the blower wheel. In addition, the blower wheel sleeve can wear out, allowing the blower wheel to wobble on the motor shaft. If the blower wheel is obstructed or defective, it may take too long to dry clothes. To determine if the blower wheel is working properly, remove the dryer vent and assess the strength of the air flow. If the air flow is weak, check the blower wheel for obstructions. If no obstructions are present, try rotating the blower wheel by hand. If the blower wheel wobbles as it turns, replace it.

Parts
Blower Wheel for your WhirlpoolDryer
Blower Wheel - Part # 686172 Mfg Part # WP694089

Dryer blower wheel. Used on 29 inch Whirlpool built models with lint filter on top. To remove the blower wheel, unscrew the blower wheel clockwise off the motor shaft.

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Cause 3Gas 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 solenoid fails, the burner may run intermittently. If the burner keeps shutting off, the dryer won’t heat properly and may not stop. 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.

Part Testing
Parts
Gas Valve Solenoid for your WhirlpoolDryer
Gas Valve Solenoid - Part # 3479 Mfg Part # 279834

Dryer gas burner valve solenoid set. If the dryer does not heat or heats intermittently the coils could be defective. To test, watch the burner and if the igniter glows for a while and then shuts off without the gas igniting, it usually means one of these coils is bad.

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Cause 4Lint Filter

The lint filter might be clogged. Dryer sheets and fabric softener can leave a residue on the lint filter, reducing the air flow. If the lint filter is clogged, clean it.

Parts
Lint Filter for your WhirlpoolDryer
Lint Filter - Part # 4262694 Mfg Part # 339392V

Dryer lint screen assembly with handle

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Cause 5Cycling Thermostat

The cycling thermostat cycles the heat on and off to regulate the air temperature. If the cycling thermostat is defective, the dryer will not heat. However, this is rarely the case. Before replacing the cycling thermostat check all the more commonly defective parts. If you have determined that all of the other components are working properly, test the thermostat by using a multimeter to test for continuity. If the thermostat does not have continuity, replace it.

Part Testing
Parts
Cycling Thermostat for your WhirlpoolDryer
Cycling Thermostat - Part # 2893 Mfg Part # WP3387134

Dryer cycling thermostat with internal bias heater, L155-25. If the dryer won't heat, it is unlikely that this thermostat is causing the issue, as the thermal fuse or thermal cut-out normally fail first.

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Cause 6High Limit Thermostat

The high-limit thermostat monitors the dryer temperature and shuts off the burner if the dryer overheats. If the high-limit thermostat is malfunctioning, it may shut off the burner even if the dryer is not overheating. However, this is rarely the case. Before replacing the high limit thermostat check all the more commonly defective parts. If you have determined that all of the other components are working properly, test the thermostat by using a multimeter to test it for continuity. If the thermostat does not have continuity, replace it..

Part Testing
Parts
High Limit Thermostat for your WhirlpoolDryer
High Limit Thermostat - Part # 2933 Mfg Part # 279048

High-limit dryer thermostat, L205-40

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Cause 7Timer

Mechanical timers have a motor on them like a clock that rotates the timer down to the off position on the control panel. If the motor goes bad on the timer it will not move when set to a timed dry cycle and the dryer won’t stop.

Parts
Timer for your WhirlpoolDryer
Timer - Part # 526777 Mfg Part # 3394734

Timer assembly, 60 Hz.