H9 and L9 errors?
how often do we change the3032 battery in a digistat +2rf?
How do I reprogram my ideal bolier rf thermostat receiver?
Remote timer bps242rf how does it work ??? ?
do i need a new dt20rf programmer?
24i fan keeps stopping poss bearing ?
Converting to Y Plan system?
Hot water but no central heating?
Honeywell ST7100 programmer goes blank when RUN selected?
dmestic hot water near boiling point, howto adjust temperature?
can i fix it honeywell st1000 ?
boss therm not working ?
channel plus xl model h37 timer showing 14.76 and none of the buttons are w?
digistat not working properly?
Replace a wireless termostat with a hard wired one?