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Whirlpool Dryer Won't Start

WED8300SW1

The part(s) or condition(s) listed below for the symptom Dryer won't start 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 start

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 out. 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.

Part Testing
Parts
Thermal Fuse for your WhirlpoolDryer
Thermal Fuse - Part # 2986 Mfg Part # WP3392519

Dryer thermal fuse. Located on the blower housing. If the dryer overheats, the thermal fuse blows to cut off power to the dryer. If the thermal fuse has blown, the dryer won't start. The thermal fuse cannot be reset—if the fuse has blown, replace it. Thermal fuses often blow due to a clogged vent.

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Cause 2Thermal 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 out. 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.

Part Testing
Parts
Thermal Fuse for your WhirlpoolDryer
Thermal Fuse - Part # 897710 Mfg Part # 279973

Dryer high limit thermostat and thermal fuse kit. If the dryer does not heat the most common cause is a blown thermal fuse. Both the thermostat and fuse can be tested to determine if either is defective.

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Cause 3Door Switch

The door switch activates when the dryer door is closed. On most dryers, the door switch makes an audible clicking sound when it activates. To determine if the door switch is working, try starting your dryer and then listen for the “click.” If the door switch makes a clicking sound, it is probably not defective. If you don’t hear a click, use a multimeter to use the door switch for continuity. If the switch does not have continuity, replace it.

Part Testing
Parts
Door Switch for your WhirlpoolDryer
Door Switch - Part # 1876767 Mfg Part # WPW10318609

Dryer door switch with wire harness and connector. This part has been discontinued by the manufacturer. However, there are service kits available for select models. These service kits include a new door switch, a new front panel, and installation instructions. See related items below.

Cause 4Drive Motor

The drive motor turns the drum and the blower wheel to exhaust the air. Before replacing the motor, first check the thermal fuse, start switch, and door switch. If all of these parts are working properly, but the motor is making a humming noise, remove the belt from the motor and check the blower wheel for obstructions. If the blower wheel is clear of obstructions, the dryer motor might be at fault. If you suspect the motor is defective, replace it.

Parts
Drive Motor for your WhirlpoolDryer
Drive Motor - Part # 158 Mfg Part # 279787

Dryer drive motor. The drive motor drives the rotation of the dryer's drum. If the drive motor is defective, the dryer won't spin..

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Cause 5Drive Belt

On most dryers, when the dryer belt breaks, the motor will still run, but the drum will not turn. However, some dryers have a switch that shuts off power to the dryer if the drive belt is broken. Check the dryer belt to determine if it is broken. If the belt is broken, replace it.

Parts
Drive Belt for your WhirlpoolDryer
Drive Belt - Part # 4248258 Mfg Part # 661570V

Dryer drum drive belt, 93 1/2 inches long, 4 ribs 3 grooves. The drive belt is a very long, slender belt that wraps all the way around the dryer drum, around a tension pulley, and then around the drive motor pulley. If the drum will not turn when the dryer is turned on the belt is likely broken.

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Cause 6Incoming Power Problem

If you have a gas dryer, unplug the dryer from the wall and plug something else into the outlet to determine if the outlet is working. If you have an electric dryer, check the home circuit breaker or fuses. If the circuit breaker or fuses are working, use a multimeter to test the outlet.

Cause 7Main Control Board

The main control board might be defective. However, this is rarely the case. Before replacing the main control board, check all of the more commonly defective parts.If you have determined that all of the other components are working properly, replace the main control board. (The control board cannot be easily tested, but you can try to inspect it for signs of burning or a shorted-out component.)

Parts
Main Control Board for your WhirlpoolDryer
Main Control Board - Part # 1203139 Mfg Part # WPW10111606

Main control board. NOTE: This part is often misdiagnosed. Please enter your dryer model# in our repair help section for additonal repair help.

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