Clock Thermostat OCC2

Clock Thermostat OCC2 OCC2-1991, OCC2-1999

4-event Clock Thermostat

OCC2, 4-event Clock thermostat with 1 sensor. The OCC2 is available either with floor or with a built in room sensor. Recommended for control of heating systems for heating comfort with minimum power consumption.

  • On/off control up to 3,600W, 16A
  • Flush mounting in a standard wall socket
  • Inclined backlit display for better read-out
  • Snap mounting of front cover for easy installation
  • Built-in clock function for automatic comfort and setback temperature
  • Delivered with factory-set program. Set only time and day at installation
  • Can be mounted in combination with various types of light switches
  • Adaptive control ensuring comfort temperature at the required time
  • With built-in 2-pole interrupter
  • Elegant European design
  • What does error code "E2" mean?


    Error code "E2" means defective, damaged or not connected floor sensor. Check connections or replace sensor if necessary.

  • What is the recommended night setback?


    The recommended night setback is max 5°C/41°F



  • Does the adaptive function reset when making a factory reset?


    Yes the adaptive function is reset during a factory reset.



  • Where to connect the ground wire of floor mats?


    The ground wire in the floor mat must be connected directly to the ground wire of the supply.

  • How to tell whether it is an OCC2 or OCD2 thermostat?


    • Press both UP and DOWN buttons together for 3 seconds. INFO is displayed.
    • Press UP button until you reach the "APP" sub menu. Select the sub menu with the OK button.
    • Try changing application type. If "roLi" is available the thermostat is a OCD2
  • Why does the thermostat keep clicking on and off rather than heating up?


    We have a OCC2 for under floor bathroom heating. The thermostat / clock keeps clicking on and off every few seconds, when it is supposed to be heating up. The display goes blank and then reappears with an audible click for a few seconds. What is happening?


    The internal power supply of the thermostat has over the years deteriorated. Please contact your local dealer for replacement.

  • What is the maximum length of the sensor cable?


    In general, we recommend a maximum cable length of 50 meters, the length might be shorter. Read the instructions for the precise maximum length.

  • What is the backup time on the OCC2?


    The backup time on the OCC2/OCD2 is 48 hours.

  • How can I cure the E2 error message?


    "E2" means defective, damaged or disconnected floor sensor. Sensor resistance should be 10 or 12 kOhm at 25°C (77°F). The onstruction or quick guide holds informatiom for the specific thermostats.