While you wait for answers, we may have found some information which could help you.
Success
Message
why has my wireless time clock stopped responding?
isar he30?
Converting to Y Plan system?
Mid position valve?
Honeywell ST7100 programmer goes blank when RUN selected?
How do I reprogram my ideal bolier rf thermostat receiver?
can i fix it honeywell st1000 ?
Ideal Classic no heating but have hot water?
dmestic hot water near boiling point, howto adjust temperature?
Replacing LP112 Programmer?
heating, Oil boiler not running?
Hot water but no central heating?