It doesn't work at all
1.
No power to the dryer
Make sure there's power getting to the dryer. Check for a
tripped circuit breaker or a blown fuse. Check the wall socket for
power with a voltmeter or by plugging something else in. Sometimes
the power cord disconnects or burns at the dryer, if this is the
case, the wiring and the terminal block must be repaired or
replaced.
2.
Door switch / Door switch actuator lever
The dryer would not start with a broken door switch. Replace the
door switch if found defective.
Most dryers have a door switch actuator lever - when you close a
dryer door, it presses against the lever, which actuates the door
switch. If the lever is broken, the switch would not activate and
the dryer would not start. Replace the lever, if broken.
Note: Door switch actuator lever usually comes with the door switch
assembly and it is recommended to get the whole assembly since there
is almost no price difference between the door switch assembly and
just the lever. Check your model for more details.
There's no heat
1.
No power to the dryer
Make sure there's power getting to the dryer. Check for tripped circuit breakers or blown fuses.
An electric dryer uses two circuit breakers or fuses, and if only
one of two is tripped or blown, the dryer might still run but not
heat. Sometimes the power cord disconnects or burns at the dryer, if
this is the case, the wiring and the terminal block must be repaired
or replaced.
2.
Heating element
A burned out heating element will show no continuity when measured
with a meter. Replace the element if found defective.
3.
Thermal fuse
Most 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.
It takes to long to dry
Note: Normal drying time for a dryer
is about 45 minutes (some may take up to an hour).
1.
Venting
Make sure the dryer vent hose, as well as the rest of the vent duct,
is not clogged.
Unless regular maintenance is performed, chances are there is a lot
of lint accumulated inside the dryer. This might affect the drying
time and could be a fire hazard. Make sure to have your dryer
cleaned regularly. Because this might involve taking most of the
dryer apart, it is recommended to have a qualified appliance
repairman perform this task.
2.
Thermostat
There are a couple of cycling thermostats inside the dryer. If one
of them breaks down, it might affect the dryer's performance.
Replace the defective thermostat.
3.
Heating element
A heating element might only be partially burned out, in which case
it would still work but will take longer time to dry the clothes.
Replace the element if found defective.