My trusty old switchmaster 900 has died... The timer no longer works. It seems to have odd wiring, with the ch off wire (channel 2) wired into the neutral connection (blue)
I have tried with no success to fit a Sunvic 207xl (spare from a friend) as it will not fire the boiler.
Can anyone advise if this wiring is normal, and recommend a replacement - digital preferred to be able to set different timings for the weekend.
Ta
I have tried with no success to fit a Sunvic 207xl (spare from a friend) as it will not fire the boiler.
Can anyone advise if this wiring is normal, and recommend a replacement - digital preferred to be able to set different timings for the weekend.
Ta