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Roper Dryer Not Heating

REX6634RQ1

The part(s) or condition(s) listed below for the symptom Dryer not heating 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 not heating

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 # 2651 Mfg Part # 279816

Dryer heating element thermal cut-off (thermal fuse) 309 degrees and high limit thermostat 250 degrees, with wiring kit. If the dryer does not heat the thermal cut off may have blown and a new high limit thermostat is needed.

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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. 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 3Heating Element

The heating element warms the air before it enters the dryer drum. Over time, the heating element can burn out, causing the dryer not to heat. To determine if the heating element has burned out, use a multimeter to test it for continuity. If the heating element does not have continuity, replace it.

Part Testing
Parts
Heating Element for your RoperDryer
Heating Element - Part # 2438 Mfg Part # 279838

Dryer heating element. If your dryer does not heat first check for a blown thermal fuse on the blower housing before replacing the heating element. In most cases the heating element will have a break in the element if defective.

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Cause 4Incoming Power Problem

If your dryer is not heating, then you may have an incoming power problem. Electric dryers need two legs of 120 volts AC equaling 240 volts. It is not uncommon for only one fuse or breaker to trip resulting in the dryer able to run, but not heat. The fuse box or circuit breaker should be checked or voltage measured at the outlet using a multi-meter.

Cause 5High 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 RoperDryer
High Limit Thermostat - Part # 898078 Mfg Part # WP3977767

Dryer high-limit thermostat, L250-80, with terminal extension arm. This thermostat should be closed for continuity at room temperature and opens at around 250 degrees Fahrenheit. If the dryer won't heat, the high-limit thermostat might be defective.

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Cause 6Cycling 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 RoperDryer
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 7Timer

If the dryer doesn’t heat, 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 # 909732 Mfg Part # WP8299781
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