Constant green flashing light on thermostat. Have tried to restart it by holding down for 10+ seconds but it just flashes amber once and then flashes green again. Have checked the power and all seems fine. Have tried to charge is using a mains but no screen turns on even after leaving for an hour. Left it off charge and let the battery die today. Popped it back on its base and held down for 10+seconds and it started flashing green again. System still working by manually switching on and off. Been installed and working fine for approx 10 months.
