Honeywell ST7100 programmer goes blank when RUN selected?
is there a way to just simply turn the temperature up?
Y Plan - Mid Position Valve 'fault'?
how often do we change the3032 battery in a digistat +2rf?
how can i get my stat to on?
H9 and L9 errors?
Remote timer bps242rf how does it work ??? ?
channel plus xl model h37 timer showing 14.76 and none of the buttons are w?
The light on the heating is fading in and out on my lp112 control panel?
Converting to Y Plan system?
Hot water but no central heating?
Replace a wireless termostat with a hard wired one?
how can i check my honeywell v4073a 3-way diverter valve?
boss therm not working ?
do i need a new dt20rf programmer?