You can't run these junction blocks below 0°C to make sure they work. It should be set at 60°C for the junction blocks. When functioning, junction blocks should supply a voltage of 24V.
1906660000 Features
Moisture Sensitivity Level: 1 (Unlimited) Min Operating Temperature: 0°C Max Operating Temperature: 60°C
1906660000 Applications
There are a lot of Weidmüller 1906660000 Junction Blocks applications.