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Roper Dryer Won't Start

RED4440VQ1

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. 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 RoperDryer
Thermal Fuse - Part # 2986 Mfg Part # WP3392519

Dryer thermal fuse located on the blower housing. If the dryer overheats, the thermal fuse blows cutting off power to the motor or the heating system. When the fuse is bad the dryer won't start or will run but not heat. The thermal fuse cannot be reset. Fuses often blow due to a clogged dryer vent.

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Cause 2Start Switch

To determine if the start switch is defective, attempt to start the dryer. If the dryer hums but does not start, the start switch is not at fault. If the dryer does not respond or make any noise, the start switch could be at fault. Use a multimeter to test the start switch for continuity. If the switch does not have continuity, replace it.

Part Testing
Parts
Start Switch for your RoperDryer
Start Switch - Part # 898073 Mfg Part # WP3977456

Dryer push to start switch. If the dryer doesn't start then the start switch may be defective. The switch can be tested to determine it is bad using a multi-meter.

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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 RoperDryer
Door Switch - Part # 528948 Mfg Part # WP3406107

Dryer door switch assembly. If the dryer does not start then the door switch could be defective. This switch also replaces the two wire switch.

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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 RoperDryer
Drive Motor - Part # 2584 Mfg Part # 279827

Dryer drum drive motor. Includes pulley for dryer drum drive belt. Other shaft has reverse threads for blower wheel. Common symptoms of a bad drive motor are:
-Dryer stops turning during cycle
-Dryer won't start
-Dryer won't turn at all
-Dryer drive motor is loud

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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 RoperDryer
Drive Belt - Part # 529597 Mfg Part # 341241

Dryer drum drive belt. The belt is flat, 92-1/4 inches long, 1/4 inch wide and has 4 ribs and 3 grooves. It replaces many other belts, including some with 5 ribs and 4 grooves. If the drum does not turn, but you can hear the motor running then there is a good chance the belt has 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 7Timer

The timer might be defective. However, this is very rarely the case. Before replacing the timer, check all the more commonly defective parts. If you determine that all of the other components are working properly, test the timer by using a multimeter and consulting the wiring diagram. If the timer is defective, replace it.

Parts
Timer for your RoperDryer
Timer - Part # 1481701 Mfg Part # WPW10185972

Dryer timer. The timer controls the dryer operations. Be aware that the dryer must heat properly for the timer to advance in an automatically timed cycle.

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