dmestic hot water near boiling point, howto adjust temperature?
H9 and L9 errors?
Honeywell ST7100 programmer goes blank when RUN selected?
is there a way to just simply turn the temperature up?
Converting to Y Plan system?
Mid position valve?
The light on the heating is fading in and out on my lp112 control panel?
channel plus xl model h37 timer showing 14.76 and none of the buttons are w?
why has my wireless time clock stopped responding?
Digistat RF 2?
do i need a new dt20rf programmer?
How do I reprogram my ideal bolier rf thermostat receiver?