Danfoss RET 230 HC-1 Instructions D'installation page 6

Commissioning
Prior to re-fitting the thermostat to the wallplate, the DIL
switches on the rear of the unit must be set to the desired
setting.
DIL Switch options, shown in factory set position (all switches
in On position)
Sw On
8
7
6
5
4
3
2
1
DIL Switch descriptions
Switch 8: If set to On/Off, both heating and cooling stages
6
On/Off
Chrono 6
˚C
No Comp Del
3 Minutes
DB 2˚C/4˚F
Fan Coil
RV-
operate in on/off mode. If set to Chrono, heating
stage operates in chrono-proportional modes,
cooling continues in On/off mode.
Chrono
Chrono 3
˚F
Comp Del
4 Minutes
DB 4˚C/8˚F
Heat Pump
RV+