Thermostat integration time

[Anna Rack]

Recently fitted a Danfoss TP5000 programmable thermostat.
Working OK but sometimes cuts in for a few seconds then off again when the temperature has been reached.

I notice there's a setting for integration time for the PI algorithm to control accuracy - it can be set to 2.5%, 5% or 10%.
It's currently set to 2.5%, the factory setting. Presumably changing this to a higher number would help?
It does mention though that it should only be adjusted after seeking advice from the manufacturer.

Any suggestions appreciated. It's running a conventional non condensing boiler.

 

[mountainman]

Hi Kagool.
I suggest that you call Danfoss.

 

[buckley plumb]

Recently fitted a Danfoss TP5000 programmable thermostat.
Working OK but sometimes cuts in for a few seconds then off again when the temperature has been reached.

I notice there's a setting for integration time for the PI algorithm to control accuracy - it can be set to 2.5%, 5% or 10%.
It's currently set to 2.5%, the factory setting. Presumably changing this to a higher number would help?
It does mention though that it should only be adjusted after seeking advice from the manufacturer.

Any suggestions appreciated. It's running a conventional non condensing boiler.

had similar when i fitted a honeywell rf room stat on an old boiler it kept cycling when reaching the room temp a modern modulating boiler would modulate down . went into the settings and changed the switching range from 1degrees to 3 degrees thus when room reached 23 it would not come on again until it dropped to 20 degrees and there was a control accuracy setting i changed that helped as well. i assume the danfoss is similar . as mountainman says phone them and they will advise

 

[Anna Rack]

Thanks. Phoned the technical helpline and they suggested the integration time would make very little difference - The option to change was the Chrono-proportional cycle rate. It was currently set at 6 cycles per hour and I've reduced it down to 3 and all seems well.