![background image](http://html1.mh-extra.com/html/lightwaverf/jsjs-lw901/jsjs-lw901_operation-manual_1915571012.webp)
Restoring the factory settings
You can reset the Room Thermostat to its initial state.
This will clear all the settings that have been entered
manually.
1. Press the menu button for more than 3 seconds.
2. Use the arrow buttons to select the "RES" in the
menu.
3. Confirm with OK.
4. "ACC" will appear on the display; press OK to
confirm.
Child-proof lock
The LightwaveRF Radiator Valve can be locked to
prevent manual operation:
1. To activate/deactivate the lock, briefly press the
Menu and buttons at the same time.
2. Once the function is active, "LOC" will appear on
the display.
3. To deactivate the function, press both buttons
again.
Setting the heating break
If the heating is turned off during summer, the
batteries in the Radiator Valves can be put in energy
saving mode.
To activate this, proceed as follows:
1. In manual mode (Manu), press and hold the right
arrow button (increase temperature) until "ON"
appears on the display.
2. To end, exit manual mode (Manu) or press the left
arrow button (decrease temperature).