Exactly what VitaBene says...
Here's what Weber said:
HUMMING
A noise that sounds similar to "whistling" or "humming" is a normal condition when certain variables are just right. They include:
Fullness of tank
A newly-filled tank can put pressure on the tank, causing the regulator to vibrate or hum.
Temperature
Barometric pressure
These conditions put additional pressure on the tank.
Humidity - Rainy weather
These conditions can create an accumulation of water vapor inside the regulator which will cause the diaphragm inside to vibrate.
The diaphragm in the regulator may vibrate back and forth, which produces a noise. This is considered normal. There is nothing wrong, and the condition may come and go.
HISSING
From the small hole in the regulator
This hole is used for ventilation - it is normal for air to be released from this hole. If you do not smell gas, there is nothing wrong with the grill. This hole is simply releasing air as it was designed to do.
If there is a strong smell of gas even after the grill is started
There is a leak. Do a leak check with soap and water to locate the source of the leak.
The smell of gas can still be detected, but a leak check did not determine where it is coming from
Check to see if the regulator vent is leaking gas.
|