LSTR231PL - Thermostat JUNG - Free user manual and instructions
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| Product Type | Thermostat |
| Brand | JUNG |
| Model | LSTR231PL |
| Dimensions (H x W x D) | 80 x 80 x 30 mm |
| Weight | 0.1 kg |
| Power Supply | 230 V AC, 50 Hz |
| Display | LCD with white backlight |
| Control Type | Rotary knob with push-button |
| Temperature Range | 5 °C to 35 °C |
| Temperature Accuracy | ±0.5 °C |
| Frost Protection | Yes, adjustable |
| Child Lock | Yes |
| Weekly Programming | Up to 4 time periods per day |
| Mounting | Flush-mounted in standard junction box |
| Protection Class | IP20 |
| Material | Thermoplastic, white (similar to RAL 9010) |
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | -10 °C to 60 °C |
| Humidity | Max 85% RH, non-condensing |
| Maintenance & Cleaning | Clean with a dry, soft cloth. Do not use abrasive cleaners or solvents. |
| Safety | Designed for indoor use only. Installation must be carried out by a qualified electrician. |
| Spare Parts & Repairability | No user-serviceable parts. Contact JUNG service for repairs. |
| General Information | CE certified. Complies with relevant EU directives. |
Frequently Asked Questions - LSTR231PL JUNG
How do I install the JUNG LSTR231PL thermostat?
Installation must be performed by a qualified electrician. Connect the thermostat according to the wiring diagram provided in the manual. Ensure the power supply (230V AC) is turned off before installation. Mount the device in a standard flush junction box.
How do I set the desired temperature?
Turn the rotary knob to adjust the setpoint temperature. The current setpoint will be displayed on the LCD. The thermostat will automatically control the heating to maintain this temperature.
How can I program a weekly schedule?
Press the programming button to enter schedule mode. Use the knob to set up to 4 time periods per day with different temperature setpoints. Confirm each step with the button. Detailed instructions are in the manual.
What does the frost protection function do?
Frost protection maintains a minimum temperature (typically 5-7 °C) to prevent pipes from freezing when the heating is not in use. This feature can be enabled or adjusted in the settings menu.
Is there a child lock function and how do I activate it?
Yes, the thermostat has a child lock. Press and hold the button for 3 seconds until a lock symbol appears on the display. Repeat to unlock. This prevents accidental temperature changes.
How do I reset the thermostat to factory defaults?
To reset, press and hold both the knob and button simultaneously for 10 seconds until the display resets. All programmed schedules will be erased. Confirm by releasing the buttons.
Can the LSTR231PL be used for underfloor heating systems?
Yes, this thermostat is compatible with most underfloor heating systems. However, ensure the load does not exceed the maximum switching current (16A resistive). Consult the manual for specific wiring requirements.
Does the thermostat have a backlight?
Yes, the LCD display features a white backlight that activates briefly when any control is used. The backlight helps readability in low-light conditions.
What is the warranty for this product?
JUNG offers a standard 2-year warranty from the date of purchase. This covers manufacturing defects. Proof of purchase is required. For warranty claims, contact your dealer or JUNG service.
Is the thermostat compatible with smart home systems?
The LSTR231PL is a standalone thermostat without built-in connectivity. It is not directly compatible with smart home systems. For smart home integration, consider JUNG's connected thermostat range.
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