I have just moved into a new house and having a few issues with the boiler. It is a combi and both the DHW and CH work ok in so much that the Rads get hot and HW out the taps. The problem seems to be the timer as it doesn't seem to turn the boiler off at the specified times. I have tried all pins out and in but when I turn up the thermostat the boiler always kicks into life. Has anyone got a wiring diagram of the timer unit (the mechanical aspects seem to be fine) or a method to test the timer ....or any bright suggestions.
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