Hi,
Please can anyone advise if its possible to replace a Switchmaster 400 programmer for a more modern digital type controller.
The system is a y plan, with a drayton ma1 three way valve.
The wiring diagram i have for a y plan system shows a hot water off wire coming from the programmer but the switchmaster 400 doesn't seem to have this.
Any advice appreciated as i'm now stuck!
Many thanks
Please can anyone advise if its possible to replace a Switchmaster 400 programmer for a more modern digital type controller.
The system is a y plan, with a drayton ma1 three way valve.
The wiring diagram i have for a y plan system shows a hot water off wire coming from the programmer but the switchmaster 400 doesn't seem to have this.
Any advice appreciated as i'm now stuck!
Many thanks