Morning,
I have a flat with an electric immersion water heater.
My timer is a grasslin evo save timer.
http://www.heatingcontrolsonline.co.uk/grasslin-ecosave-economy-7.html?gclid=Cj0KEQjwl_6oBRDHxNGz6ueJufMBEiQAvm_k_plZrjS_PKa-3tlBB7tC4qYBjVlSk8dpBiDhBffEkIoaAn698P8HAQ
For the past 5...