I arrive at a no heat call. I find the Roof Top Unit inducer running yet cold air coming out of vents. The inducer starts and all safeties closed so the smart valve was lighting the hot surface ignitor. Yet the pilot wasn't lighting. This prevented the gas valve from energizing the main gas valve. I check gas and have gas present at the valve. I find the pilot hood wasn't putting the gas correctly across the Ignitor preventing the pilot from lighting. I bent the pilot hood to get the gas to go across. After this, the heating system would fire the burners off every time.
25 авг 2024