User Guide  RET2001 Digital Room Thermostats
2
Danfoss Heating
  VUSUD102 08/2020 
1  LCD Overview
Symbols Function description Symbols Function description
Parameter number 
insetup
Frost protect active
Room temperature Away mode
Temperature indication
RF Status
(RET2001RF only)
Set temperature
Battery low indicator
(RET2001B & RET2001RF 
only)
Heating active
2 Buttons
Symbols Function description
Power on/o
M
Mode change / option 
setting
< >
Temperature / option 
setting selectors
3  Power ON/OFF
Turn the thermostat ON or OFF (Standby) by pressing  .
4  Setting the Temperature
•  Press < or > at any time to change the desired temperature value. SET is shown in the display.
•  When releasing < or >, the display returns to showing the actual temperature.
•  The adjustment step is 0.5 °C.
5  Select Away Mode
•  Press M to enter Away mode and   will be displayed.
•  Away mode temperature can be set in parameter settings, P07.
•  Press M again to exit Away mode.