Service/Diagnostic Level - Vaillant VRT 360 Operating And Installation Manual

11 Start-up
11.2

Service/diagnostic level

Access the service/diagnostic level by
pressing the P button and the dial.
• Press the P button and the dial simul-
taneously for 3 seconds.
First, a heating request for 50 °C is trig-
gered to test communication with the
boiler.
Then you can select all the test options
by pressing the dial (see table 11.2).
When you press the P button the display
returns to basic mode.
You can select the following tests:
36
Dial Test
Press and Heating
push P request
button
3 seconds
Turn Hot water
request
Test procedure
A heating request
of 50 °C is simu-
lated. The burner
on the boiler starts
up and the pump
starts (only up to
the maximum supply
temperature of the
boiler).
A hot water request
is triggered. The
charging pump
starts up and all
other elements are
switched off.
VRT 360 Installation Manual