OCC4 Clock Thermostat

An “all-in-one” clock thermostat for electric underfloor heating control where optimum comfort temperature and minimum energy consumption are required.

  • Display
  • ECOdesign
  • Programmable

Notice: Discontinued product

Documents FAQ

OCC4 Clock Thermostat from OJ Electronics A/S

OCC4Easy read-out of energy consumption

6-event clock thermostat – Set & forget!

An “all-in-one” clock thermostat for electric underfloor heating control where optimum comfort temperature and minimum energy consumption are required. Adaptive control ensures a comfortable temperature when you want it.

  • Thinnest clock thermostat on the market, only 20 mm.
  • Easy animated menu navigation and programming in 8 languages.
  • Compatible with existing floor sensors, an excellent choice for renovations

Product Documents

Product Sheets
Product Sheet, OCC4 (DE)
File type/size:PDF ( 482.30 KB )
Product Sheet, OCC4 (EN)
File type/size:PDF ( 459.62 KB )
Product Sheet, OCC4 (RU)
File type/size:PDF ( 538.00 KB )
Brochures
Product Catalogue 2025 Europe-Asia-South-America, English
File type/size:PDF ( 3.69 MB )
User Manuals
User Manual, OCC4 / OCD4 (EN, DE, NL, PL)
File type/size:PDF ( 25.87 MB )
User Manual, OCC4 / OCD4 (EN, SW, FI)
File type/size:PDF ( 10.25 MB )
Instructions
Instructions, OCC4 / OCD4 (EN, DE, SV, FR, ES, NL, PL, CS, RU, UK)
File type/size:PDF ( 227.50 KB )
Instructions, OCC4 / OCD4 (EN, RU, UK)
File type/size:PDF ( 171.09 KB )

Product FAQ

Whom to contact to get info about the total load?

Question

When turning on the unit for the first time and choosing Floor thermostat – it asks me for a load.

Reply

Ask installer for total load.

What does error code "E2" mean?

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

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.

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.

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.

What is the maximum length of the sensor cable?

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.

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