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I'm perfectly happy to accept it's likely my error which is why I'm here looking for help and advice. OK thank you, that's helped further my understanding of some of the basics. I'm still utterly perplexed because when I wire the unit up to a plug as suggested I get a light and when I wire up...

Yes I did notice on one of the occasions I wired the unit up (I've done it and re-done it several times) that the connections weren't sitting completely home so I've been very careful since to ensure they all are So I have a red wire which was connected into slot 1 on the old timer which I...

Yes, I've tried pushing the control unit sync button first and then the thermostat's reset button (as advised in the manual) and I've tried both at the same time

thanks mcmoby69 and alan 999, I'm not the OP and apologies I mistakenly thought it said 'BC' in the title. I'm trying to work out why I don't get any LED light at all on the boiler control unit either when the boiler fires or when I try to sync. Any advice you have would be much appreciated...

Does this advice definitely relate to the RT500BC? I'm trying to fit this model but I cannot see any levers on the boiler control unit and the manual only makes reference to the jumpers on the back of thermostat unit, advising that all that is required to change the RF ID code is to remove a...

Hi, can anyone help? I'm trying to install an RF thermostat in my Ariston combi boiler (Micro Combi 23/27 MFFI) because we currently have no thermostat only the timer which costs us a fortune and we are always at an uncomfortable temperature I've disconnected the old clock timer and connected...