Troubleshooting

No Start: If the dryer wiil not start, a fuse may have blown or the electrical connection may be faulty. Electronic controls can prevent starting if there is a fault-code. The door switch could be at fault. You should hear a noticable "click" when the door switch button depressed. A broken belt can also prevent the dryer from starting. If the dryer has overheated, some dryers will open a thermal safety fuse which will prevent the motor from running. In that case the temperature issue would need to be corrected and the fuse replaced. In rare cases, the timer itself may be at fault while the start switch can prevent the machine from running as well. With power supply disconnected, the fuse, switches, and timer can be checked with a simple continuity tester. Most dryers have a wiring diagram somewhere on the back or inside the cabinet to aid in troublshooting. Better dryers will also include a tech-sheet which can give fault-locating information as well as decoding any electronic control stored fault-codes.
No Dry: If the dryer spins but doesn't dry clothes, the problem may be with the heating element or fans. The first place to look is to make sure there is power to the unit. Resetting the cicuit breaker may restore heating temporarily. In this case, an electrician should be consulted to repair the breaker or its connections.
Venting Issues: Improper ventilation can cause problems as well. The first place to look is inside the vent piping and the connector at the back of the machine. If air-flow is reduced, the safety thermostat may open and this can take a long time to cool down enough to close again if the air-flow is restricted. If it has significantly overheated, the thermal cut-off (safety-fuse) may have opened. As in "No-Start" these can be tested with a continuity testing.