I've had the above device controlling my gas boiler for a few years. Sometimes when there is a powercut it loses the settings and I have to reprogram the clock and on/off times.
On the original box it mentions a battery back-up, so I thought this might need replacing. I've taken the back cover off the programmer and there's no sign of a battery, just the electronics. There's no mention of a battery in the instructions. Should there be a replaceable battery?
On the original box it mentions a battery back-up, so I thought this might need replacing. I've taken the back cover off the programmer and there's no sign of a battery, just the electronics. There's no mention of a battery in the instructions. Should there be a replaceable battery?
