- Reaction score
- 17,166
I don`t know any combi which works on switch live, all I seen are volt free switching to timer then stat.
The op states this is a timer he has not what was fitted, so link was on backplate
Worcester Bosch combi's all have a 240V switched live for external controls.
The OP states he has an old danfoss 103 in which the L has been linked to common which he is replacing with the new programmer.