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Vitotrans 300 Installation, Operating and Service
Maintenance Mode
Service
Service Mode - (S3HA/D3HA 60 & 90
only) Turn on the ‘Service Mode’ slide the
switch to the on position. This function
allows reduced operation the Vitotrans
300 while being serviced so that DHW
production can continue uninterrupted.
The heat exchangers can be isolated and
removed one at a time for cleaning or
serviced (see page 56) and the Vitotrans
300 will continue to operate with a
reduced capacity using the remaining heat
exchanger(s).
The Service Mode function does not have
an automatic time out, turn the Service
Mode switch to the“Off” position.
Note:
this function is not available on the
S3HA/D3HA 30 models.
Select menu
. then press the
Service
button to display the service window.
A QR code will appear. Scanning the QR
code will bring all current documents for
the Vitotrans 300.
When finished with the QR code, press the
“X” in the top left corner of the screen to
close the service window.
When service work is complete in the CONTRACTOR
access level, log out to prevent unwanted changes
being made. This is done by pressing the “Door”
8
icon in the top right corner of the screen. A window
will pop up and prompt: “Do you want to leave this
site?” Press “Leave”.
To complete service log in as ‘user’. For user log In see
page 45.
Restoring to Normal Operation
Service
