please can anyone help- my boiler heating control knob , hot water knob , temp knob all keep turning with no resistancs to them but the on / off switch still works.
You can tell if thermostats are working as it displays the temperature you're setting it to as you rotate it. Then it will revert back to displaying the current flow temp. If it remains on the flow temp then they have snapped. They break really easily. You could always get your plumber to increase the temperature by manually increasing it on the board.
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