Just checking, as the wireless thermostat has stopped talking to the control unit by the boiler.
The two AA batteries test at 1.5V. The batteries are labelled as 1.5V However new batteries test at 1.61V
Is the true voltage of AA batteries around 5.9V to 6.1V?
Waiting 10 minutes at the moment to see if this will reset the thermostat and then pair up with the controller.
Cheers
Dave R