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Hi my modern house has a fully pressurised water system sealed, my hot water is fine tank is maintaining 1.5 bar. I currently have cold water dripping from the see through overflow pipe. my cold water (white) pressure tank has 24 psi in it.. as it always has had.! but there is a label on...

hi all ok boiler works with above wirering But I now need to install a wired room thermostat ! prob a Honeywell DT90e any ideas on how to connect it using my Honeywell st9100c at mo 1 & 4 on Honeywell go to the stat connections in the boiler. I assume they run the program's...

Hi I've just fitted a Honywell ST9100c Timer. Wirered L & N &. No 1. &. No 4. go to the Stat. it works but honywell feels quite Hot ! Is this normal ..? Help / Advise Thank You.

Hi seems to work left side of Honeywell seems a bit warm tho were the connections are. would that be right.? cheers

RDJ10RF wirered L N + 2 wires to stat termilals in boiler works but unreliable I don't need a roomstat I need to know What no volt terminals to conect from my Honeywell ST9100c go to the boiler stat.. poss 2&4 but not sure and don't want to damage boiler.

The rad stats are the std ones trv's for the amount if tine I use the heating, I'm no to bothered about the gas. prob with the useless siemens it works one day but not the next, it switches heating on, but often doesent switch it off.. it's even come in in the night, and its not down...

Help..? I have a new holiday home came fitted with a new Morco GB24 boiler and a useless siemens wireless controller. All I want is a Timer and let the rad stats do the rest.. So I've got a Honywell ST9100c Timer No Therostat.! don't want a thermostat I've removed the siemens...

Hi I have one of these things fitted in my holiday home. fitted by the mobile home makers. it has a mind of its own.! sun is set to 21 deg moon to 5 deg it always turns the heating on but after the prog has turned off , it will often just turn the heating on again if the temp...