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Fitting an external programmer to a combi boiler, what are the do's and dont's
You must uninstall the original programmer, which means adding wires together not to break the circuit before you install the external one!! Just a bit confused of the two black wires from the "clock, programmer which are connected to the room stat "brown,black"
Well me!! "as a plumbing student",, and reading about hot water supply and trying the part "P" (wiring the 13Amp plug) part has been all good but think I would need to talk to the sparky hate to accidently cross or damage a PCB!!
Any help and advise, would be most appreciated
You must uninstall the original programmer, which means adding wires together not to break the circuit before you install the external one!! Just a bit confused of the two black wires from the "clock, programmer which are connected to the room stat "brown,black"
Well me!! "as a plumbing student",, and reading about hot water supply and trying the part "P" (wiring the 13Amp plug) part has been all good but think I would need to talk to the sparky hate to accidently cross or damage a PCB!!
Any help and advise, would be most appreciated
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