TX 400 - Thermostats Roca - Free user manual and instructions
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| Product Type | Programmable Thermostat |
| Brand | Roca |
| Model | TX 400 |
| Dimensions (WxHxD) | Approx. 100 x 100 x 30 mm |
| Weight | Approx. 150 g |
| Power Supply | 2x AA batteries (alkaline recommended) |
| Battery Life | Up to 1 year under normal use |
| Display Type | LCD screen with backlight |
| Temperature Range | 5°C - 35°C (41°F - 95°F) |
| Accuracy | ±0.5°C |
| Programming Options | Daily and weekly schedules, up to 4 periods per day |
| Control Type | On/off control for heating systems |
| Compatible Systems | Gas, oil, electric boilers; heat pumps; underfloor heating |
| Sensor Type | Built-in NTC thermistor |
| Mounting | Wall-mounted (screws and wall plugs included) |
| User Interface | Touch buttons or tactile keys |
| Special Functions | Frost protection, holiday mode, key lock, adaptive start |
| Clock Backup | Integrated CR2032 battery for time retention |
| Maintenance | Clean with dry cloth; do not use liquids |
| Safety | CE marked; RoHS compliant |
| Spare Parts | Batteries (AA, CR2032); contact Roca service for other parts |
Frequently Asked Questions - TX 400 Roca
How do I install the Roca TX 400 thermostat?
First, turn off power to your heating system. Remove the old thermostat. Mount the backplate on the wall using the provided screws and plugs. Connect the wires according to the wiring diagram in the manual (typically L, N, Com, NO, NC). Attach the thermostat body and insert 2 AA batteries. Power on and follow the setup wizard.
How do I set a weekly schedule?
Press the Menu button, select 'Schedule', then choose the day. Use the + and - buttons to set the time and temperature for each period (Morning, Day, Evening, Night). You can copy schedules to other days using the 'Copy' function.
Why does my thermostat display 'Low Battery'?
The 'Low Battery' icon indicates that the AA batteries need replacement. Replace them with fresh alkaline batteries. Ensure correct polarity. The backup battery (CR2032) retains time settings; if that is low, replace it as well.
How can I reset the thermostat to factory defaults?
To reset, press and hold the Mode and + buttons simultaneously for 5 seconds until the screen clears. Alternatively, remove batteries and wait 10 minutes. This erases all custom schedules and settings.
Can I use the TX 400 with a heat pump?
Yes, the TX 400 is compatible with heat pump systems. In the installation settings, select 'Heat Pump' as the system type. Note that the thermostat only provides on/off control, not modulating.
How do I activate holiday mode?
Press Menu, select 'Holiday'. Set the start and end dates, and the desired temperature (typically 10-15°C to save energy). The thermostat will resume normal schedule after the holiday period.
What does the 'Frost Protection' function do?
Frost protection automatically turns on heating when the room temperature drops below 5°C (41°F) to prevent pipes from freezing. This function works even in manual mode.
How do I lock the thermostat to prevent tampering?
Press and hold the Menu button for 3 seconds to toggle key lock. A padlock icon appears. To unlock, press and hold again. This prevents accidental changes to settings.
What is the warranty on the Roca TX 400?
Roca offers a 2-year warranty from the date of purchase. It covers manufacturing defects but not damage from improper installation or misuse. Keep your receipt for warranty claims.
Where can I download the user manual?
The user manual can be downloaded for free from the notice-facile.com website. Navigate to the product page for Roca TX 400 and click the download button. The manual is available in PDF format.
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USER MANUAL TX 400 Roca
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Product information
Brand : Roca
Model : TX 400
Category : Thermostats