water heater buzzing when running water
My suburban water heater is making a buzzing sound when we run the hot water. Anyone have any ideas?
Forum Discussion
Open up the outside pop off relief valve and let water run. See if you get the buzzing sound. IF NOT, then the check valve on the water heater is the problem. The Check valve is NOT supplied by the Water Heater maker, but by the RV maker and there may be 2 check valves. On the Input and one on the Output. Doug
