Viessmann VITODENS 300 Service Instructions Manual page 70

Service scans
Scanning operating conditions and sensors
Operating condition display
(subject to system equip-
ment)
Date
Burner OFF or ON
Int. pump OFF or ON
Int. output OFF or ON
Heating pump OFF or ON
Cylinder pump ON or OFF
DHW circulation pump OFF
or ON
Central fault OFF or ON
Mixer or mixer open or mixer
close
Solar circuit pump OFF or ON Display only if a Vitosolic is installed
Solar circuit pump ...h
Various languages
Constant temperature control units
1. Press c.
2. Select the required operating con-
dition scan with a or b.
Operating condition display (sub-
ject to system equipment)
1
15 °C/°F
3
65 °C/°F
5
50 °C/°F
5
45 °C/°F
6
70 °C/°F
*1
Display in °F subject to coding and with the fourth digit of the display
70
Explanation
Output 20
Internal extension
If an external extension or extension kit for one
heating circuit with mixer is installed
Display only, if an external extension is installed
Display only, if an external extension is installed
Display only, if an external extension is installed
Display only, if an extension kit for one heating
circuit with mixer is installed
Hours run
The respective languages can be selected as
permanent display language with d.
3. Press c.
Explanation
Outside temperature sensor
*
1
value (
ture sensor is connected)
Boiler water temperature sensor - actual
* 1
temperature
Cylinder temperature sensor
*
1
temperature
Solar
*
1
Collector sensor actual value
*
1
(cont.)
: only if an outside tempera-
actual DHW temperature
actual
actual