Scanning Operating Conditions And Sensors - Viessmann Vitodens 300 Service Instructions Manual

Service scans

Scanning operating conditions and sensors

Weather-compensated control units
1. Select a heating circuit:
Press a.
&
1r flashes on the display.
&
Select heating circuit A1 (heating
circuit without mixer):
Press d.
&
Select heating circuit M2 (heating
circuit with mixer):
– Press a.
– 2r flashes on the display.
– Press d.
Heating circuits A1 and M2
Operating condition display
(subject to system equip-
ment level)
User no.
Holiday program
Date of departure
Date of return
Outside temperature, ... °C
Boiler temperature, ... °C
Flow temperature, ... °C
Standard
room temperature, ... °C
Room temperature, ... °C
Ext. set room temp., ... °C
DHW temperature, ... °C
Solar DHW temp., ... °C
Collector temperature, ... °C
Mixed flow temp., ... °C
* 1
Burner, ...h
* 1 * 1
Burner starts, ...
Solar energy
Time
Date
*1
Reset hours run and burner starts after maintenance has been completed. You can reset
the hours run to 0 by pressing e.
70
2. Press c.
3. Select the required operating con-
dition scan with a or b.
4. Press c.
Description
Encoded user no. in the LON system
Displayed only if a holiday program has been
set up
Date
Date
Actual value
Actual value
Actual value (only for heating circuit M2)
Set value
Actual value
If external hook-up
Actual DHW temperature
Actual value
Actual value
Actual value, only with low loss header
Hours run
Actual value
Displayed in kW/h