Our water heater was making alot of noise during LP heating cycle.
So, I opened the acces door and noticed that the air mixture seemed to be to rich. I attempted a "Blue" flame adjustment and was successful, and the noise level went "way" down.
But, this was with the outside access door open. Once this panel was closed ti began making the noise again. Intermittant at first, then back to "always".
I tried to adjust accordingly to compensate for the lack of available air when the panel is "closed". But what's weird its that it acting as if its getting "to much" air .... again.... and seems to always revert back to the loud operation and most an orange/yellow flame, instead of blue. Once the access panel is open again, I can adjust to get the perfect Blue operation.
Anyone with any insight on this ???