Ideal W Stelrad Group boiler RS450 1239(3)?
c h boiler heats HW supply only,no central heating?
C H Boiler heats D W only ie no C.H?
Mid position valve?
where can i buy a new solenoid for my honeywell gas valve?
dmestic hot water near boiling point, howto adjust temperature?
How can i marry my honeywell CM921 the the BDR91 relay box?
HOW DO I SET IT?
Radiators not all working all the time???
Ideal Classic no heating but have hot water?
Replacing LP112 Programmer?
No heating and no hot water?
heating, Oil boiler not running?
how can i check my honeywell v4073a 3-way diverter valve?
Converting to Y Plan system?