Had heatslave tank replaced by plumber. nown boiler running until over heat limit reached - very dangerous temps with two kids!
Plumber came back and replaced both heatslave thermostat and over limit stat.
Control for heating OK, works, trips etc. But on hot water you can turn dial and hear 'click' but whereas before we could control temp, and full anti-clockwise would stop burner operation, now it still 'clicks' as if relay making, but just keeps getting to over limit and no amount of full anti-clockwise will stop burner.
Any thoughts please as it all worked fine before and have had two new stats and heatslave tank (which developed a leak)
Any clues please!!??
Plumber came back and replaced both heatslave thermostat and over limit stat.
Control for heating OK, works, trips etc. But on hot water you can turn dial and hear 'click' but whereas before we could control temp, and full anti-clockwise would stop burner operation, now it still 'clicks' as if relay making, but just keeps getting to over limit and no amount of full anti-clockwise will stop burner.
Any thoughts please as it all worked fine before and have had two new stats and heatslave tank (which developed a leak)
Any clues please!!??