Technical data

107
Service scanning – Vitotronic 100, GC1
Scanning and resetting maintenance displays
After limits have been reached, which were set up via coding addresses “1F”, “21” and “23” (see page 159), the
programming unit display flashes one of the following messages.
Please note:
Set coding 24: 1 and then coding 24: 0, if maintenance is implemented before a maintenance message is displayed; the set
maintenance parameters for run hours and periods are then reset to 0.
Display
indication
Explanation
a_245
˚C Max. flue gas
temperature has been
reached
35510
h
Burner run hours have
been reached
___12
u
Time interval
(e.g. 12 months)
has been reached
1. Scan maintenance messages with
or .
2. Press .
The maintenance indication in the
display is cleared.
Please note:
An acknowledged maintenance
message can be redisplayed by
pressing (approx. three seconds).
After maintenance has been carried out
1. Reset coding 24: 1 (see page 160) to
24: 0.
Please note:
If coding address 24 is not reset, a
new maintenance message will be
displayed on Monday morning.
2. If required:
Press
Reset burner run hours and burner
starts with D
(see page 106)
Press
3. If required:
Press 9 and rw simultaneously
for approx. four seconds
Reset maximum flue gas
temperature (8) with D
(see page 104)
Press
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