hey guys, service call from today that has me stumped. The unit is an engineered air, model number to follow. The main burner is not lighting, so far this is as far as i have got.
-Call for heat
-Solenoid modulator opens
-Gas Valve will not open, unit locks out on no flame.
So, in the manual the gas valve is rated for 3-8vdc to open. (maxitrol). At the valve i am getting 34vdc, and the valve will not open! verified with manometer.
The feed for this valve is straight off the main board. And yes, i am getting 34Vdc at the board as well.
So is the board bad? or will adjusting one of the pots solve this issue? I have not heard back from tech support yet.