Salus VS05 Installer's/User's Manual page 19

LED indication when following group master
Slide switch "*" position to will not follow group master VS10 and will longer be part of the group.
The VS05 will be in permanent frost protection.
To return the VS5 to the group (if applicable) move the slide switch to 'A' .
Blue LED indicates the units is in frost
protection mode. Frost protection
Temperature is fixed at ??
Green LED means that the
temperature has fallen below the
frost protection level the unit is
calling for heat.
19
VS05 Installer Manual