Hi Mr. Webster,
I have the problem with our neighbors gas Kenmore dryer. After a cool off period (unplugged), the unit will fire the burner for about 30 seconds then turn off the fire. It won't relight till the unit is unplugged for ~5 minutes or more then repeats the one light process. Intermittent is always a problem.
I looked at it this evening and found some things of interest.
There are 2 solenoid coils on the gas valve. One has 2 wires and the other 3 wires. When the unit is in the "failed" mode, the 2 wire solenoid coil is activated but when I do get a light, it is not.
The 3 wire solenoid coil only picks when there is a flame.
On the 3 wire coil, there is about 500 Ohms between the 2 outer pins with no resistance between the center pin and either of the outside pins. The connector has 3 wires.
Should there be continuity between all 3 pins of that solenoid? If so, about how much?
I have a good, glowing ignitor. After the one successful light, the system will retry about every minute or so. The igniter lights but the gas valve never opens, letting gas flow.
Thanks in advance for your advice.