Horstmann HRT4-ZW behaving abnormally

Other Devices & Integrations Climate Control & Temperature Sensors
1

Hello!

I’m having a Horstmann HRT4-ZW that is not regulating normal, former I have used this thermostat with a fibaro relay and it have worked fine, and the last year I have used the Horstmann to controll a Aeon Labs DSC17 (http://www.smarthus.info/product_info.php?cPath=1_46_129&products_id=2130) and it have worked fine for a year. Suddenly now it’s not behaving the way it should be. When it set the “set temp” to be 5 degrees the temp is rising to around 13-14 degrees. Does anybody have an idea what’s wrong?

Appreciate the input.

2

What do you mean by that:

When it set the “set temp” to be 5 degrees the temp is rising to around 13-14 degrees
do you mean the new setpoint is 13 or 14 degrees instead of 5 ?

3

Check configuration variable 3 on the HRT4-ZW Device Options tab. It sets the temperature differential of the thermostat in tenths of degrees. The Vera default is 10 for one degree.

4

The setpoint was 5 degrees.

[quote=“RexBeckett, post:3, topic:177717”]Check configuration variable 3 on the HRT4-ZW Device Options tab. It sets the temperature differential of the thermostat in tenths of degrees. The Vera default is 10 for one degree.[/quote] The variable was 10.

I removed the the association group nr 2 and readded it, no it’s working fine.