intermittent delay in controller registering cylinder temp

[lonach]

Hi. My system has worked fine for a few years now. Recently, I have noticed the cylinder going overtemperature. The controller says the temperature is fine. It then displays the correct temperature and behaves properly. It appears that there is occasionally a delay in the controller having the correct temperature. How often should the cs92 transmit the temperature data?
It works fine most of the time, but obviously I would like to prevent the boiler pushing the water temperature up too high.
Anyone come across this?
Thanks
Graham

[Richard]

CS92A when located and fitted correctly will transmit data based on temperature change and as temperature gets closer to setpoint transmission rate increases. When was the last time the batteries were change in it?

[lonach]

Hi ... thanks for the reply. They are actually brand new batteries ... but the resideo chap said they have to be high quality batteries. I have now changed them from amazon to duracell and have not hat a repeat event. (previously it was at least two a day). That might be it! Fingers crossed.