1. Rhagymadrodd
This user manual provides comprehensive instructions for the installation, operation, and maintenance of your Jung TR UD LS 231 WW Universal Thermostat. Please read this manual carefully before installation and use to ensure proper function and safety. Keep this manual for future reference.
The Jung TR UD LS 231 WW is a universal room thermostat designed for precise measurement and regulation of room temperature. It features a clear backlit display and supports both heating and cooling functions.
2. Gwybodaeth Diogelwch
Always observe the following safety precautions to prevent personal injury or damage to the device:
- Installation and electrical connections must only be performed by a qualified electrician in accordance with local regulations and standards.
- Before any installation or maintenance work, ensure the power supply to the thermostat is disconnected at the main circuit breaker.
- Do not expose the thermostat to moisture, extreme temperatures, or direct sunlight.
- Peidiwch ag agor na cheisio atgyweirio'r ddyfais eich hun. Cyfeiriwch yr holl waith cynnal a chadw at bersonél cymwys.
- Ensure proper ventilation around the thermostat to prevent overheating.
3. Cynnyrch Drosview
The Jung TR UD LS 231 WW thermostat features a user-friendly design with a clear digital display and intuitive controls.

Figure 3.1: Jung TR UD LS 231 WW Universal Thermostat Front View
The image displays the Jung TR UD LS 231 WW Universal Thermostat. It features a white frame and a clear digital display. The display shows a temperature reading of 21.0°C, indicates 'AUTO' mode, and the current time as 14:31. Below the main display, there are four control buttons: a mode button (represented by a square with a line), a minus button, a plus button, and a checkmark button. A small flame icon is visible on the right side of the display, indicating heating status. The overall design is clean and functional.
Elfennau Arddangos:
- Arddangos Tymheredd: Shows the current room temperature and setpoint.
- Dangosydd Modd: Displays the current operating mode (e.g., AUTO, Manual).
- Arddangosfa Amser: Yn dangos yr amser presennol.
- Heating/Cooling Indicator: Icons indicating active heating (flame) or cooling.
Botymau Rheoli:
- Mode Button (Square with line): Used to cycle through operating modes.
- Botwm Minws (-): Decreases temperature setpoint or navigates menu options.
- Botwm Plws (+): Increases temperature setpoint or navigates menu options.
- Confirm (Checkmark) Button: Yn cadarnhau dewisiadau neu'n nodi gosodiadau.
4. Gosod
The thermostat is designed for mounting in a standard flush-mounted box according to DIN 49 073. It requires a 230 V AC power supply and an N conductor.
4.1 Gwifrau
Rhybudd: Ensure power is disconnected before wiring. Incorrect wiring can cause damage to the device or pose an electrical hazard.
- Connect the 230 V AC power supply to the designated terminals. An N conductor is required.
- Connect the two-wire heating/cooling system to the relay output terminals. The relay is potential-free.
- Refer to the wiring diagram provided with the product packaging for specific terminal assignments.
4.2 Mowntio
- After wiring, carefully place the thermostat into the flush-mounted box.
- Secure the thermostat using screws. This model uses screw fixing and does not require fixing claws.
- Attach the front cover and frame securely.
5. Cyfarwyddiadau Gweithredu
5.1 Pŵer Cychwynnol
Once power is restored, the thermostat display will illuminate. It may show default settings or prompt for initial setup (e.g., time, date).
5.2 Gosod y Tymheredd
- In normal operating mode, use the Hefyd (+) a Minws (-) buttons to adjust the desired temperature setpoint.
- The temperature can be set in 0.5 °C increments within the range of 5 °C to 30 °C.
- The display will show the new setpoint temporarily, then revert to the current room temperature.
5.3 Changing Operating Modes
Gwasgwch y Mode Button (Square with line) to cycle through available operating modes, such as:
- CAR: Operates according to the programmed schedule.
- Llawlyfr: Maintains a constant temperature set by the user.
- OFF/Standby: Turns off heating/cooling functions.
Cadarnhewch eich dewis gyda'r Confirm (Checkmark) button if prompted.
6. Moddau Rhaglennu
The Jung TR UD LS 231 WW thermostat offers programmable features to optimize energy consumption and comfort. Specific programming steps may vary; refer to the detailed instructions in the full product manual for advanced settings.
6.1 Pennu Amser a Dyddiad
Typically, this is the first step after installation or a power outage. Access the time/date setting menu by pressing and holding the Botwm Modd or a combination of buttons as indicated on the display.
- Defnyddiwch y Hefyd (+) a Minws (-) botymau i addasu gwerthoedd.
- Defnyddiwch y Botwm Modd or Confirm (Checkmark) button to move between fields (hours, minutes, day, month, year).
- Confirm all settings to save.
6.2 Creating a Weekly Schedule
The thermostat allows you to set different temperature setpoints for various times of the day and days of the week.
- Enter the programming menu (consult the full manual for specific button sequences).
- Dewiswch y diwrnod neu'r grŵp o ddyddiau yr hoffech eu rhaglennu.
- Define time periods and their corresponding desired temperatures.
- Arbedwch yr amserlen.
7. cynnal
7.1 Glanhau
To maintain the appearance and functionality of your thermostat:
- Sychwch yr wyneb gyda meddal, damp brethyn.
- Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the plastic and display.
- Gwnewch yn siŵr nad oes unrhyw hylif yn mynd i mewn i'r ddyfais.
7.2 Cronfa Pŵer
The thermostat has an internal lithium cell providing a power reserve of approximately 10 years. This ensures that time and program settings are retained during short power outages. If the display remains blank after a prolonged power outage, the internal battery may need professional replacement.
8. Datrys Problemau
If you experience issues with your thermostat, consult the table below for common problems and solutions. For problems not listed or if solutions do not resolve the issue, contact qualified service personnel.
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Mae'r arddangosfa'n wag. | Dim cyflenwad pŵer; batri mewnol wedi'i wagio. | Check circuit breaker. If power is present, internal battery may need replacement (professional service recommended). |
| Thermostat not controlling heating/cooling. | Incorrect wiring; wrong operating mode; setpoint not reached. | Verify wiring (power off first). Check operating mode (e.g., AUTO, Manual). Adjust setpoint to be above/below current room temperature. |
| Mae'n ymddangos bod y darlleniad tymheredd yn anghywir. | Thermostat wedi'i leoli ger ffynhonnell wres/drafft; rhwystr synhwyrydd. | Ensure thermostat is not exposed to direct drafts, sunlight, or heat sources. Clean any dust from sensor openings. |
9. manylebau
| Nodwedd | Manyleb |
|---|---|
| Rhif Model | TR UD LS 231 WW |
| Brand | Jung |
| Cyflenwad Pŵer | 230 V AC |
| Defnydd Pŵer | Tua. 1.2 W. |
| Newid Cyfredol | 10 mA to 10 (4) A at 230 V AC |
| Ystod Gosod Tymheredd | +5 °C i +30 °C |
| Datrysiad Arddangos Tymheredd | 0.1 °C |
| Gwerth Gwahaniaethol | 0.5 K (Adjustable) |
| Allbwn | Relay (Normally Closed), Potential-free |
| Math Cysylltiad | Two-wire, N conductor required |
| Cronfa Wrth Gefn | Approx. 10 years (Lithium cell) |
| Mowntio | Screw fixing, for flush-mounted box (DIN 49 073) |
| Deunydd | Thermoplastig |
| Lliw | Gwyn Alpaidd |
| Dimensiynau (pecyn) | 9.6 x 8.4 x 8.2 cm |
| Pwysau (Eitem) | 200 g |
| Nodweddion Arbennig | Backlit display, Cooling function, Smartphone control support (via external system), Remote control (optional) |
10. Gwarant a Chefnogaeth
Jung products are manufactured to high quality standards. For information regarding warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Jung websafle.
For technical support, spare parts, or service inquiries, please contact your local Jung distributor or authorized service center. Please have your model number (TR UD LS 231 WW) and purchase details ready when contacting support.
Spare parts availability information is currently unavailable through general product listings. Please inquire directly with Jung or an authorized dealer.