6 Troubleshooting
18
Operating instructions
multiMATIC
0020255037_00
5.4.4
Ventilation boost
Op. mode
→
Ventilation boost
Menu
→
Basic settings
→
Operating mode
→
ZONE1
→
Ventilation boost
–
If you want to switch off the zone while the living areas
are being ventilated, activate the
Ventilation boost
ad-
vanced function.
This advanced function switches the zone off for 30 minutes.
The frost protection function is activated, and hot water gen-
eration and circulation remain active.
Ventilation is activated and works at the highest ventilation
level.
The advanced function is automatically deactivated after 30
minutes or you can cancel the advanced function first. The
heating installation will then return to the pre-set operating
mode.
5.4.5
Party
Op. mode
→
Party function
Menu
→
Basic settings
→
Operating mode
→
ZONE1
→
Party function
–
If you want to switch on the zone, hot water generation,
ventilation and circulation temporarily, activate the
Party
function
advanced function.
The advanced function brings the room temperature to the
set desired temperature
Day
, in accordance with the set time
periods.
The advanced function is deactivated after six seconds or
if you cancel it before the six seconds is up. The heating
installation will then return to the pre-set mode.
5.4.6
Cylinder boost
Op. mode
→
Cylinder boost
–
If you have switched off hot water generation or require
hot water outside a time period, activate the
Cylinder
boost
advanced function.
The advanced function heats the water in the domestic hot
water cylinder until it reaches the set desired temperature
Domestic hot water
. The advanced function is active for
one hour unless you cancel it sooner. The heating installa-
tion then returns to the preset operating mode.
5.4.7
System OFF (frost protection active)
Op. mode
→
System OFF active
–
The heating function, hot water circuit and cooling are
switched off. The frost protection function is activated.
The circulation is switched off.
Ventilation is activated and works at the lowest ventilation
level.
5.5
Messages
5.5.1
Maintenance message
Overview of maintenance messages (
→
Appendix C)
If maintenance is required, the control displays a mainten-
ance message in the display.
To prevent the heating installation from breaking down and
to prevent damage, you must pay attention to the mainten-
ance message:
▶
If the operating instructions for the unit that is shown con-
tain a maintenance instruction regarding the maintenance
message, carry out the maintenance work in accordance
with the maintenance instruction.
▶
If the operating instructions for the unit that is shown do
not contain maintenance instructions for the maintenance
message, or if you do not want to carry out the mainten-
ance work yourself, inform a competent person.
5.5.2
Fault message
Overview of fault messages (
→
Appendix B)
If a fault occurs in the heating installation, the controller dis-
plays a fault message in the display. The competent person
must clear or rectify the fault in the heating installation, oth-
erwise it could cause material damage or make the heating
installation malfunction.
▶
Inform a competent person.
If you would like to see the basic display on the display
again, press the left-hand selection button
Back
.
You can read the current fault messages under
Menu
→
In-
formation
→
System status
→
Fault status
. As soon as a
fault message occurs for the heating installation, the setting
level displays the value
Fault list
. The right-hand selection
button has been assigned the
Display
function.
6
Troubleshooting
Overview of the troubleshooting (
→
Appendix B)
6.1
Temporarily setting limp home mode
If the fault message
Restricted operation/ comfort pro-
tection Inactive
appears on the display, the heat pump has
failed and the controller enters limp home mode. The auxili-
ary heater now supplies the heating installation with heating
energy. During installation, the competent person has restric-
ted the temperature for limp home mode. You can feel that
the hot water and heating are not becoming very hot.
While you wait for the competent person to come, you can
use the rotary knob to implement the following settings:
Inactive
: The controller works in limp home mode; heating
and hot water at a moderately warm temperature
Heating
: The auxiliary heater takes over heating mode; hot
heating, cold hot water
DHW
: The auxiliary heater takes over domestic hot water
mode; hot water hot, heating cold
DHW+heat.
: The auxiliary heater takes over heating and
domestic hot water mode; heating and hot water hot
