Thanks for the reply Taylortwocities.
When you say "put a link between L and 1" I presume you mean just join these two terminals with a short piece of suitable wire, yes?
Hi, I need a bit of help replacing a central heating timer. The boiler is oil and single circuit, the pipework heating the radiators and hot water tank simultaneously.
The existing timer is mechanical and the replacement is a Drayton Tempus 1 electronic timer for systems with 1 heating...