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Ah, I hadn't changed any default settings - it could well be down to the schedule then! I'll soon find out. Need to figure all that out next, but sure beats pressing buttons on the tiny LCD programmer I used to have Cheers.

Thanks RandomGrinch! I've double checked, all the cables are seated nicely - I thought the same, so spliced the additional live wire that connects to the CH and HW terminals with a wago connector, as the Heat Link terminals are definitely on the small side. The hot water seems to have...

Thanks again, RandomGrinch! I've hooked the Heat Link up to the boiler, and it seems happy - so thanks for the great advice. The only thing I am confused about is the hot water - setting the Nest thermostat to 'Combi' or 'System' didn't give me independent hot water control, which the boiler...

Thank you very much for your detailed advice, it's much appreciated! The wiring is tucked away and hard to see, but you're right - I had planned on cutting the spade connections off and just re-terminating the wires ready for the Heat Link. I had not even considered the amperage on the...

Hello! I'm looking for some assistance with installing a Nest Heat Link and Thermostat to my old Boulter Camray 5 combi boiler. I have a programmer fitted to the boiler which is original as far as I can tell, with the programmer and wiring diagram shown in the images below. I'm confused as...