Response from Groarke Electrical Services Ltd
Good evening, Phillip.
Thank you for the review. Our electrical engineers are fully qualified and versed in many electrical systems. We are through in our installations and not trial and error. Although investigations can appear like that. Our main goal is to achieve high quality end results. As your boiler had an added programmer module, this needed to be removed before the new hive could control the system, even though the hive switch operated via phone app and manually back to the boiler, the signal was being over ridden by the module. Once removed it worked perfectly.
Best wishes
GES