where can i buy a new solenoid for my honeywell gas valve?
How can i marry my honeywell CM921 the the BDR91 relay box?
new programmer fitted?
how can i check my honeywell v4073a 3-way diverter valve?
VCW GB 242 EH Valliant Boiler?
heating, Oil boiler not running?
C H Boiler heats D W only ie no C.H?
Honeywell ST7100 programmer goes blank when RUN selected?
Ideal Classic no heating but have hot water?
Converting to Y Plan system?
Hot water but no central heating?
How do I reprogram my ideal bolier rf thermostat receiver?
c h boiler heats HW supply only,no central heating?
boiler bangs when zones shut down?
dmestic hot water near boiling point, howto adjust temperature?