Viessmann VITODENS 300 WB3A, Service Instructions Manual

Page: 87 / 148

Operating condition display
(subject to system equip-
ment level) Description
Burner OFF or ON
Int. pump OFF or ON
Output 20
Int. output OFF or ON Internal extension
Heating pump OFF or ON External extension or extension kit for one heat-
ing circuit with mixer installed
Cylinder loading pump OFF
or ON Displayed only if the external extension is
installed
DHW circulation pump OFF
or ON Displayed only if the external extension is
installed
Central fault display OFF or
ON Displayed only if the external extension is
installed
Mixer, mixer open or mixer
close Display only if the extension kit for one heating
circuit with mixer is installed
Solar pump OFF or ON Displayed only if Vitosolic is installed
Solar pump ...h Hours run
Various languages Each language can be selected as permanent
display language with
d
.
Constant temperature control units
1. Press
c
.
2. Select the required operating con-
dition scan with
a
or
b
.
3. Press
c
.
Operating condition display (sub-
ject to system equipment level) Description
0 01 Equipment no. in case of multi-boiler
systems
1
15 °C/°F * 1
Outside temperature sensor - actual
value (only if an outside temperature
sensor is connected)
3
65 °C/°F * 1
Boiler temperature sensor - actual value
5
50 °C/°F * 1
Cylinder temperature sensor - actual
value
5
□
45 °C/°F * 1
Solar - actual DHW temperature
6
70 °C/°F * 1
Actual value - collector sensor
Scanning operating conditions and sensors
(cont.)
71
Service scans
56
92
550
GB
*1
Displayed in °F if the relevant code has been selected and with the fourth display digit.