Sl-550-tr-ipi-e won’t light

[Randyllong]

Pilot ignites. Tested valve resistance 40 ohm pilot, 60 ohm main. Checked continuity of dexen module and wiring. Cleaned flame sensor and igniter and vacuumed out (ceramics look fine). Still the main burner will not fire up.
At this point, I’m assuming it either has to be the flame sensor or possibly the fan. The fan does not turn on.

Does the fan start up on these before the main will allow gas, or is my problem likely with the flame sensor?

 

[DAKSY]

Can you hear a click from the valve when you turn the unit on?

 

[Randyllong]

Ok. Figured it out. It was the valve. After determining the valve was receiving a signal from the module, I lightly tapped the valve with a rubber handle screwdriver and voila! Now have main flame again.