My Whirlpool has a very similar problem. Sensor Drying Timer does not advance. On timed program, the timer works. However, the heat comes up only in the beginning. When the heat reaches certain temperature, it shuts off the heat by design, I guess. However, the heat does not come back up again.
I tested the 4 sensors/thermostats on continuity (ohms) at the back. They seem fine.
To me, it seems to be two problems:
2. a sensor/thermostat malfunctions which fails to send signal to ?? to restart the heat.
Based on Gene's suggestion, replacing 13 & 14 will work. Would it actually work on my case. I really hate to spend $50 to purchase and it still does not work. Any change the items can be returned.
Any comments appreciated.