The dryer does not want to put out any heat it takes for ever to dry anything.
Answer Tom, Have you disconnected the exhaust vent and checked the vent pipe and vent hood for clogs, obstructions, kinks, twists, etc. You also need to make sure you have 220 - 240 VAC at the terminal block on the back of the dryer. The hi limit thermostat will reset once the dryer temp has dropped to acceptable levels, but it could be weak, especially if you've been operating with a clogged vent for an extended period. and the control thermistor should register 50K ohms across the terminals at room temp.
Dryer starts normal but about ten minutes a code e64 comes up and the heater stops.
The error code E64 represents a heater open circuit. Check heater coils and connections for shorts to the cabinet. Replace the heater and or wiring if damaged and retest.