How to mend ... Not Room Thermostat

vaillent 824 6 radiator system?

first five radiators work ok, 6th radiator only gets half hot which runs from the fifth radiator on 15mm pipe... [Read more]

Programming Honeywell CM921?

Hi: The heating engineer installed this unit during installation of a new boiler. This is a 1 day wireless pro... [Read more]

combi boiler rsf 82et not working correctly?

my combi boiler is not working correctly, everytime you turn the tap on.its pot luck if you get hot water or n... [Read more]

Ferroli Optimax He Plus 38C hot water works but heating dosent?

I have a Feroli optimax he plus 38c boiler. I have replaced the room theromastat as the old one was the wrong ... [Read more]

c h boiler heats HW supply only,no central heating?

My system is a fully pumped central heating installation, with room & cylinder thermostat. Could the motorise... [Read more]

How to calibrate the digital thermostat on a Hoover?

Hi, I have a problem with my fridge/freezer,a hoover HBCA230FFK, The display shows H for fridge and -19 for f... [Read more]

ariston combi keeps firing up?

Hi, my ariston microgenus 23mffi keeps firing up & shutting down repeatedly even though the room thermostat is... [Read more]

wiring danfoss 103 timer to a danfoss ret230p thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

wiring danfoss 103 timer to a danfoss ret230p thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

Wiring a Danfosse 103 timer to a Danfosse RET 230P Thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

how can I fix my thermostat?

My room thermostat has stopped working and to turn the heating on I have used the override switch, what should... [Read more]

Ferroli Optimax 25 c?

I had the above fitted 5 years ago and my cantral heating installer told me I did not need a room thermostat h... [Read more]

how to fit a room thermostat?

Could you draw a diagram of the wiring to the stat and from the stat to the boiler, showing what size cable to... [Read more]

I have hot water overflowing into the loft expansion tank?

I had a new cylinder fitted in December 2009 and the plumber also upgraded the 3way valve to an electric one. ... [Read more]

how do you reset boss bps242rf programmable room thermostat?

how do you reset BOSS BPA 242RF programmable room thermostat help please. thanks.

hot water but no heating?

hello. i have a worcester danesmoor oil boiler, its a sealed system, honeywell st699b programer honeywell V... [Read more]

How can I fix my Danfoss TP5000 + RF programmable room thermostat ?

This is a wireless thermostat as combi boiler is in roofspace. No problems for three years, but now will not ... [Read more]

Ravenheat 85t?

Can anyone help my Ravenheat boiler will start and fire up on central heating but after a few seconds shuts do... [Read more]

ferroli domicompact f30b rising temperature?

Ive got a f30 its about 3 years old. Its fine most of the time then once in a while it will just increase the ... [Read more]

BAXI SOLO 2 RS not firing after power cut?

The pilot light is on , room thermostat clicks ok and the timer/programmer upstairs is on , if turn power on a... [Read more]