If your boiler is leaving rooms at 3 degrees below their set points with a 40% TPI duty cycle then I'm pretty sure that your boiler is struggling to...
That's about what I'd expect. The reminder beep starts quite soon, but it should run for 2-3 hours before the big red warning that blocks the screen...
Yes, the CS92A sends its updates too rarely (1 hour between updates if no changes have occurred) and does not send every message twice like the DTS92...
When I first got mine in 2015 it would run from batteries without complaining for about 3 hours and run another 3 hours complaining before it finally...
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