No sorry, my boilers expansion vessel is flooded, it kept dropping pressure so the engineer suggested flooding it to stop this rather than replacing it as apparently its a nightmare to replace on my boiler?
the way your boiler works is that when you run a hot tap the power to the pump is cut to allow all the heat to go to the Bi-Thermal heat exchanger to heat the water, a relay is sticking and supplying power to the pump when HW is demanded, not all boilers work this way but yours does
the way your boiler works is that when you run a hot tap the power to the pump is cut to allow all the heat to go to the Bi-Thermal heat exchanger to heat the water, a relay is sticking and supplying power to the pump when HW is demanded, not all boilers work this way but yours does
Circuit board needing replaced again then. Just to confirm before i order it, heating and hot water stops working when the boiler cuts out (flame in tell-tale window goes out) in your experience this will be a pcb fault?
switch the heating off and run a hot water tap, if boiler fires flow switch is fine and then see if the boilers pump is running with only HW demanded if it does its the PCB
switch the heating off and run a hot water tap, if boiler fires flow switch is fine and then see if the boilers pump is running with only HW demanded if it does its the PCB
Is there an option to just switch heating off or do you mean switch boiler off?
When boilers off no hot water, when i turn the heating right down to minimum and try water, it only runs hot for a minute or so then gas cuts out and shuts boiler off.
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