JG Thermostats disco lighting - gone bonkers

[readiescards]

My JG wireless thermostats have been doing this funny light sequence for 3 days now:

https://drive.google.com/file/d/13sm_EGJdqf8t5KgTOKHehP8YsbTIHtZdyg/view?usp=sharing

 

They show the correct temperature for a few moments, then show 10 1d, then 9 1d  then 8 1d then 7 1d   and then revert to showing the temperature again.

Note the icicle symbol top right has also disappeared.

 

Can't see any mention of this 'feature' in the manual

Any ideas?

 

[MikeSharp01]

Never used them but if they are all changing together then the problem is most Likley Central as they won't all fail together. Have they lost connection with their base station / master node or something like that / are the odd numbers error codes / is it so hot they are out of normal control range?

Edited July 16, 2018 by MikeSharp01
Typo

[Jeremy Harris]

I agree with @MikeSharp01, it sounds as if they've somehow managed to lose the connection to the coordinator, or perhaps lost it for a time and now the link won't re-establish, perhaps because one or more of the pairings has been lost.  In theory the pairing should be retained over things like interference or loss of battery power, but odd things can happen with wireless systems like this, especially as this version of a Zigbee network relies on a star configuration, where all the network devices are connected through the coordinator.  If there's a problem with the coordinator, then all the connected devices may find themselves unable to communicate.