Vaillant VRT 340f Bedienungsanleitung
34
Installation instructions VRT 340f
11.2 Service/diagnostics
level
Access the service/diagnostics level by
pressing the P button and the dial.
• Press the P button and the dial
pressing the P button and the dial.
• Press the P button and the dial
simultaneously for approx. 3 seconds.
First, a heating request for 50 °C is
triggered to test communication with the
boiler. Then you can select all the test
options by pressing or rotating the dial.
When you press the P button the display
returns to basic mode.
triggered to test communication with the
boiler. Then you can select all the test
options by pressing or rotating the dial.
When you press the P button the display
returns to basic mode.
11 Start-up