I can not get the heating element to heat and the timer won’t advance. I have replaced AP3094244, AP3131941, AP313939, AP3139143 and AP3094254. The dryer runs, motor runs, blower runs etc. just no heat and no advance on the timer. Please advise next step.
If the timer will not advance in timed dry mode then you probably do not have 240 volts going to the unit.
Another possibility is that the centrifugal switch on the motor is toast.
Here is the wiring diagram
http://www.servicematters.com/docs/wiring/Wiring%20Sheet%20-%208576793.pdf
First try flipping the breaker off/on slowly a couple times. Sometimes you can loose half the line without actually tripping the breaker and the heating coil and timer require the full 240 volts.
If this does nothing.
Measure the voltage at the plug
L1 to L2 should be 240 volts
L1 to Neutral and L2 to Neutral, both should be 120 volts.
If OK
Unplug the unit and check the wires at the unit’s terminal strip to ensure they are properly connected and none of them have burned off
If OK
Plug the unit in and check the voltage at the terminal strip. This is just in case you have a bad line cord.
Be careful 240 volts is lethal.