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  1. M

    Keston C36 Combi boiler - Thermostat no talking to boiler

    Thank you James. Do you think running the test mode (t99 for 10ish minutes) could resolve CH automatic on and off? I.e. Could it be that CH is not automatically turning on and off due to some settings mismatch? Thanks
  2. M

    Keston C36 Combi boiler - Thermostat no talking to boiler

    No takers? Any advice would be appreciated
  3. M

    Keston C36 Combi boiler - Thermostat no talking to boiler

    Hello All, I have Keston C36 Combi boiler, installed in 2006, fully services (last one done in Jun 2013). Currently having an issue, being that when thermostat clicks on and off the central heating is still on. "Summer" button works fine, so I am using this function to turn CH on and off...
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