Appendix; A Troubleshooting; B Overview Of The End User Level - Vaillant uniTOWER plus Operating Instructions Manual

Appendix

A Troubleshooting
Problem
No domestic hot water, heat-
ing remains cold; product
does not start up
Domestic hot water mode
without any problems; heat-
ing does not start
B Overview of the end user level
Setting level
Basic display → Right-hand selection button
Room temperature setpoint *
Manual cooling demand*
Basic display → Left-hand selection button
Domestic hot water cylinder tar-
get temperature*
Actual domestic hot water cylin-
der temperature
Yield indicator →
Energy yield: Day, Heating
Energy yield: Day, Domestic hot
water
Energy yield: Day, Cooling
Energy yield: Month, Heating
Working figure: Month, Heating
Energy yield: Total, Heating
Working figure: Total, Heating
Energy yield: Month, Cooling
SEER, month, cooling
Energy yield: Total, Cooling
SEER, total, cooling
Energy yield: Month, Domestic
hot water
Working figure: Month, Domestic
hot water
Energy yield: Total, Domestic
hot water
Working figure: Total, Domestic
hot water
Total energy consumption
Live Monitor →
Current status message(s)
Building circuit water pressure
*If no system control is installed, the menu item is displayed in the product's control panel.
0020291525_04 Operating instructions
Possible cause
Building power supply switched off
Domestic hot water or heating set to "off"/domestic
hot water temperature or target temperature set too
low
Air in the heating installation
No heat requirement via the control
Values
Min. Max.
Current value
Current value
Current value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Cumulative value
Current value
Current value
Remedy
Switch on building power supply
Ensure that domestic hot water mode and/or
heating mode is activated in the system control.
Set the domestic hot water temperature in the
system control to the required value.
Purging the radiators
If the problem occurs again: Inform the compet-
ent person
Check the timer programme on the control and
correct if necessary
Check the room temperature and, if required,
correct the target room temperature (→ Control
operating instructions)
Unit Increment, select
℃
℃
℃
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
bar
Factory setting Setting
13