OCC2 Basic clock thermostat with room sensor

In general, it is recommended that the maximum sensor cable length should be 164 feet/50 meters, the length might be shorter. Read the instructions for the precise maximum length.

"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.

Question

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?

Reply

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

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

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

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

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

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

Yes the adaptive function is reset during a factory reset.