Wrong voltages terminal block could be the reason why your Whirlpool 29 inch electric dryer is not starting or heating properly.
In order to be able to check the voltages at the terminal block you will need to use a multimeter. Set the multimeter in a scale that could read more that 240 ac volts.
Disconnect the dryer from the wall outlet and remove the terminal block cover. Set your multimeter on a scale that could read more than 240 ac volts.
This is a live test and you need to be very careful and make sure that no part of your body touches the dryer while you check the voltages.
Connect the dryer to the wall outlet. Grab the multimeter test probes by their insulators and take the following readings.
Take a reading between the terminal on the left and the terminal on the right. The reading should be about 240 ac volts..
Take a reading between the terminal on the middle and the terminal on the left , the reading should be about 120 ac volts.
Take another reading between the terminal on the middle and the terminal on the right, the reading should be about 120 ac volts.
If the readings are not as described, That could be the reason why the dryer don't start or heat.
Watch the following video to see how this is done.
Below are the links to the parts needed for this repair.