new programmer fitted?
why has my wireless time clock stopped responding?
what is wrong with my isar boiler/honeywell thermostat?
Honeywell ST7100 programmer goes blank when RUN selected?
C H Boiler heats D W only ie no C.H?
Mid position valve?
Ideal W Stelrad Group boiler RS450 1239(3)?
VCW GB 242 EH Valliant Boiler?
can i fix it honeywell st1000 ?
Hot water but no central heating?
Radiators not all working all the time???
heating, Oil boiler not running?
dmestic hot water near boiling point, howto adjust temperature?
How do I reprogram my ideal bolier rf thermostat receiver?
No heating,but have hot water?
No heating and no hot water?
c h boiler heats HW supply only,no central heating?
Ideal Classic no heating but have hot water?