Fireplace new gas valve will not open
Recently I replaced the whole gas valve assembly on my gas fireplace insert.
The gas valve is a SIT Nova 820 model 0820634, also replaced the thermopile and the thermocouple this thermocouple has an interrupter to control something I don't know, I suspect is a damper in the chimney outlet I am not sure.
I tested for leaks, I started the pilot holds OK but the gas valve does not open when In "ON" position
I by-passed the switch at the valve to eliminate that possibility.
Does anybody knows what it could be? Help!