Learn how your appliance is supposed to operate so you can determine if it is malfunctioning.
The gas valve assembly contains two internal valves with corresponding external solenoid coils. When the coils are powered they open the internal valve and allow gas to flow.
The coils them self rarely ever become permanently open circuits but they can fail (ie. open up electrically) intermittently while in use and then reset to normal after a short period of inactivity. This can make the coils tricky to absolutely pinpoint as the troublemaker of heating problems. The valve itself has also been known to 'stick' shut, totally preventing the solenoid coils from opening the gas flow.
Use the model number of your dryer or any part numbers found on the old burner to purchase the proper replacement. Procedures for Replacing the Valve Assembly
All of the information in these Appliance Clinic procedures is provided FREE OF CHARGE. No liability is assumed by the author for the accuracy of the contents or damages caused by the use of these procedures.