I have a Worcester 280RSf combi boiler - the central heating work fine but the problem is with hot water. After turning of tap the burner stops but almost every time the over temp switch trips. It does reset when the system cools down. When the burner stops , it sounds like the water is boiling and the pressure gauge fluctuates before the h.t. switch trips.
I can stop it happening if I turn the tap on and off a few times (starting and stopping the burner)
Recently had the vent valve replaced as it was leaking - engineer never found anything else wrong.
Any suggestions?
I can stop it happening if I turn the tap on and off a few times (starting and stopping the burner)
Recently had the vent valve replaced as it was leaking - engineer never found anything else wrong.
Any suggestions?