Service Scans Service Level Summary - Viessmann Vivotronic 050 HK1S Installation And Service Instructions Manual

Service scans
Service level summary
Function
Adjusting the display contrast
Participant check
(in conjunction with LON system)
Relay test
Temperatures and
quick scans
Operating condition
Troubleshooting
Calling up acknowledged fault messages
Fault history
Resetting codes into
the factory default
setting
Code 1
Code 2
20
Key combination Exit
Press the "OK" and
"+" buttons
simultaneously;
the display will darken
Press the "OK" and "-"
buttons simultaneously;
the display will get
lighter
Press the w and "OK" Press the w and "OK" buttons
buttons simultaneously simultaneously for approx. 1 second
for approx. 2 seconds
Press the 9 and "OK" Press "OK"
buttons simultaneously
for approx. 2 seconds
Press the 9 and rw Press "OK"
buttons simultaneously
for approx. 2 seconds
Press Press
Press Press "OK"
Press "OK" for approx. Press "OK"
2 seconds
Press the rw and Press "OK"
"OK" buttons
simultaneously for
approx. 2 seconds
Press the w and rw
buttons simultaneously
for approx. 2 seconds;
press "D"
confirm with "OK"
Press the 9 and w Press the 9 and w buttons simultaneously
buttons simultaneously for approx.
for approx. 2 seconds 1 second
Press the w and rw Press the 9 and rw buttons
buttons simultaneously simultaneously for approx. 1 second
for approx. 2 seconds;
confirm with "OK"
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