ThomasCdoorthe32
New Member
I have an A.O. Smith water heater that uses the WV8840B5077 control valve.
my problem is the tank occasionally decides to let the water temperature dropped 10° or so below its normal start temperature. Then once it has decided to come on, sometimes, it turns off before reaching its normal off temperature. This will go on for most of the day then it will go back to normal operation for a week or two. Any idea what caused the strange situation?
my problem is the tank occasionally decides to let the water temperature dropped 10° or so below its normal start temperature. Then once it has decided to come on, sometimes, it turns off before reaching its normal off temperature. This will go on for most of the day then it will go back to normal operation for a week or two. Any idea what caused the strange situation?