My good man furnace will start the igniter will ignite but the burner do not produce flame I think my gas valve is not being activated by the circuit board therefore no gas is being release. How do I test for this I am getting a 2 flashes in the code but the pressure switch is fine. Help!

Hi ec. And welcome, here's how to test you coils, How to Test a Gas Valve Solenoid Coil | eHow.com (http://www.ehow.com/how_7980249_test-gas-valve-solenoid-coil.html) good luck and let us know how it goes.