No flame detected after three ignition attempts.
-If the gas supply pressure is incorrect, it must be adjusted to the correct pressure.
- If spark is not present, check for correct ignition ectrode position. If position is correct. check for 120Vac at the supply of the spark generator.
-if the combustion air pressure is incorrect, inspect the vent system and eliminate any obstructions.
- if the voltage to the gas valve is not 120Vac the power control board must be replaced.
-if the resitance of the gas valve coils is not 0.18 kohm and/or 1.10 kohm, the gas valve must be replaced.
-If the ionization current is not greater than 60, confi rm that the the CO2 content is adjusted properly. Check the fl ame detection electrode and if necessary replace it, check the integrity of the flame detection electrode electrical wires.
