We had noticed our hot water wasn't coming on recently, so I checked our HW/CH controller which is a Potterton EP2002 and it appeared seized up with the time stuck. Even switching the 4-way switches to the 'on' position didn't light the lights or turn anything on. The buttons to set the times were also doing nothing. Totally crashed!
I turned off the mains supply to it, but it remains on, so I assume there's a battery back-up in there. Would disconnecting this battery do the trick? If so, how do I get into the unit (or remove it from the wall), as I couldn't see any exposed screws anywhere?
Ta, Dave.
I turned off the mains supply to it, but it remains on, so I assume there's a battery back-up in there. Would disconnecting this battery do the trick? If so, how do I get into the unit (or remove it from the wall), as I couldn't see any exposed screws anywhere?
Ta, Dave.