Oct 27, 2009
- the temperature thermostats and or heater are bad, on electricdryers, you can ohm out to see what is defective.
There's no heat

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 fuseMost 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.
IgniterIgniter 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.
electric dryer
1
Heating elementA burned out heating element will show no continuity when measured with a meter. Replace the element if found defective.
2
Thermal fuseMost 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.