honeywell

forgive the basic errors I'm not an expert on any of this. We have a hot water tank and gas central heating it is controlled by a dial thermostat and a Honeywell st699. The one day two cycle one... If the system calls for hot water OR central heating then there is no issue and it works fine...

Combi boiler was connected to a Honeywell R6660D wireless relay box: N - Blue L - Empty L - Brown A - Empty B - White C - Black D - Empty E - Empty This has been swapped out and replaced with a Honeywell BDR91 wireless relay: N - Blue L - Empty L - Brown A - Empty B - White C - Black The...

Hi, currently have a Sunvic TLX2000 series stat which i've been informed does not have a permanent live. Honeywell BDR91 requires a permanent live. Is it possible to get a permanent(ish) live if the old programmer behind is placed on cont? I'm just in place upgrading the old stat to was...

My current CH setup is a pressured sealed-system with a hot water tank and Worcester boiler. It has a Honeywell ST9400C programmer and a wireless Honeywell thermostat. Unfortunately the programmer is starting to fail (it keeps powercycling) so I'm looking to install the new Hive instead. This...