SUMMER MAINTENANCE CYCLE
Tado needs the following.
A way of cycling all the valves at least once a week during summer, and running the central heating for a couple of minutes to prevent valves seizing, to prevent pumps calcifying in hard water areas, and to prevent dead spots where sludge settles and to cycle inhibitor.
All that is needed is a 10 minute cycle in away mode where all the valves can be opened and shut a couple of times - and then to run the heating with no temperature sensing shut off. (a thermostat overide). This would do that trick and as it could have a condition to only run in away mode - it can be set for a time of day when it won't make the house uncomfortable.