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OJ Electronics Manuals & User Guides

OJ Electronics specializes in designing and manufacturing intelligent electronic controls for electric underfloor heating and HVAC systems, ensuring energy efficiency and comfort.

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OJ Electronics is a global leader in the design and development of electronic controls for underfloor heating and ventilation systems. Headquartered in Sønderborg, Denmark, the company has over five decades of experience in creating intelligent solutions that improve indoor climate comfort and energy efficiency for residential, commercial, and industrial applications.

A maara akara a nke ọma maka ya OJ Microline® series of thermostats, which feature intuitive touchscreens, WiFi connectivity, and precise temperature regulation for electric floor heating. Beyond heating, OJ Electronics produces advanced drives and control systems for air handling units (AHUs) and ventilation applications. Their products are designed with a focus on reliability, ease of installation, and compliance with strict international safety standards.

OJ Electronics manuals

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OJ ELECTRONICS EX-DV ventilashion na-akwọ ntuziaka

Ọktoba 5, 2024
OJ ELECTRONICS EX-DV Ventilation Drives Product Information Specifications: Product Name: EX-DV Tool Name: OJ-DA-HMI-UPDATETOOL Compatibility: Systems with EXcon master Author: MAS Varenr. 670067 UK Prepared on: 03.04.2024 Product Usage Instructions…

OJ ELECTRONICS MCD5 Touch Thermostat Ntuziaka

Ọgọst 17, 2023
OJ ELECTRONICS MCD5 Touch Thermostat Instructions INTRODUCTION The thermostat is an electronic PWM/PI thermostat for temperature control by means of an NTC sensor located either externally or internally within the…

OJ Electronics UTCG Type Thermostat User Manual

Akwụkwọ ntuziaka onye ọrụ
User manual for the OJ Electronics UTCG Type thermostat (models UTCG-4991, UTCG-4999). Provides instructions on installation, daily operation, GFCI testing, troubleshooting failure codes, and technical specifications for this electronic temperature…

Manual de Uso del Termostato Táctil WiFi LED UWG5®

Akwụkwọ ntuziaka onye ọrụ
Manual de uso completo para el termostato táctil WiFi LED UWG5® de OJ Electronics, que cubre instalación, configuración, funciones, integración de aplicaciones, solución de problemas y más.

UDG4 Touch Thermostat Interactive User Manual

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Explore the features and operation of the OJ Electronics UDG4 Touch Thermostat with this interactive user manual. Learn to program schedules, manage settings, and optimize your home's heating for comfort…

OJ Electronics manuals from online retailers

OJ Microline UTN4-4999 Non-Programmable Thermostat User Manual

UDG-4999 • December 2, 2025
This manual provides comprehensive instructions for the installation, operation, and maintenance of the OJ Microline UTN4-4999 Non-Programmable Thermostat for radiant floor heating systems, featuring dual sensing and dual…

OJ Microline UDG4-4999 Thermostat User Manual

UDG4-4999-B • June 16, 2025
Comprehensive instruction manual for the OJ Microline UDG4-4999 Touch Screen Programmable Thermostat. Learn about installation, operation, programming, and maintenance for your radiant floor heating system, featuring dual sensing,…

OJ Electronics support FAQ

Ajụjụ a na-ajụkarị gbasara akwụkwọ ntuziaka, ndebanye aha na nkwado maka ika a.

  • How do I test the GFCI on my OJ Electronics thermostat?

    Press the test button on the unit (often the top button). The red light should flash, indicating the ground fault circuit interrupter is working. Press the reset button (often on the side) to return to normal operation. This should be done monthly.

  • What does 'Sensorless Mode' or 'Regulator Mode' mean?

    Sensorless mode allows the thermostat to operate based on a fixed heating percentage (duty cycle) rather than temperature readings. This is useful if the floor sensor is damaged or not installed.

  • Which floor types are compatible with OJ Microline thermostats?

    OJ thermostats are generally suitable for tile, stone, laminate, concrete, and wooden floors, provided the correct floor protection settings are selected during setup.

  • What do the LED colors on the power module indicate?

    Typically, a white LED indicates power is on with no heat demand. An amber LED indicates the heat relay is active. A flashing red LED usually signals a GFCI error or trip.

  • Where can I find the serial number on my thermostat?

    The serial number and software version can often be found in the 'User Settings' or 'Thermostat Readouts' menu under the 'Support' or 'About' section of the interface.