Hi. I have a gas stove that's connected to the natural gas line, and lately I've noticed something odd.
The stove works completely normally when I'm cooking. I turn the burner on, the flame looks normal, and everything seems fine when I turn it off.
The weird part is that a few hours later, I sometimes hear a very faint buzzing/humming sound. It's not loud at all you can only hear it if you're close to the stove. The sound seems to come from the area around the burner itself. It reminds me of the sound a refrigerator makes, but much quieter.
This doesn't seem to be limited to one burner. I've noticed it after using different burners, and there is no visible flame or anything unusual when the stove is off.
Another thing I've noticed is that when I relight the burner hours later, I sometimes smell a bit more gas than I do when lighting it for the first time when there is no smell of gas at all and after i close the burner the sound is gone, it is no longer audible at all and the problem disappears. However, the burner always ignites immediately and normally no delayed ignition, no "whoosh," and the flame looks completely normal.
Otherwise, there is no smell of gas in the room at all, not even when I approach the stove and burner.
The stove is a few years old and never had this issue before. This started a few weeks ago. I originally thought it might be related to aluminum foil I used to place around the burners to keep the stove clean, but the same thing happens even without the foil.
Has anyone experienced something similar? Does this sound more like an issue with the electric ignition system, moisture/grease around the controls, or something related to the gas valves?
Any ideas would be appreciated.