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Symbols on the display
These symbols are not always displayed, but appear
subject to the system version and the operating state.
Displays in "Climate info"
Current outside temperature
Humidity in the room
Current room temperature
Displays in "Ventilation"
Time program, ventilation
Symbol colour:
Red: Ventilation with heat recovery is enabled.
Blue: Ventilation without heat recovery (passive
cooling via bypass) is enabled.
Fig. 9
Red Poor air quality
Green Excellent air quality
Note
The rainbow-coloured arc on the left-hand edge of the
screen shows the air quality. Air quality is displayed
only if a ViCare CO2 sensor (accessories) is connec-
ted.
Signal strength
Symbol colour:
Red: WiFi
Blue: Low Power Radio Status
Temperatures
"Reduced" Central heating with reduced room tem-
perature
"Normal" Central heating to standard room tem-
perature
"Comfort" Central heating to comfort room temper-
ature
DHW temperatures "Set" and "Actual"
Cooling temperatures
"Reduced" Symbol colour: Blue
Room heating with reduced room tem-
perature
"Normal" Symbol colour: Yellow
Room heating with standard room tem-
perature
"Comfort" Symbol colour: Orange
Room heating with comfort room tem-
perature
Current ventilation level
"Stage 1" "Ventilation for humidity protection"
enabled
"Stage 2" "Reduced ventilation" enabled
"Stage 3" "Nominal ventilation" enabled
"Stage 4" "Intensive ventilation" enabled
Energy saving and comfort functions
"Holiday program" (not for ventilation)
"Holiday at home" (not for ventilation)
"Extended heating"
"Once-only DHW heating"
Symbol colour:
Red: Once-only DHW heating is active.
Grey: One-off DHW heating is disabled.
"Intensive ventilation" enabled once only.
"Noise-reduced ventilation" enabled once only.
Further operating programs
Frost protection is enabled.
Standby mode
Standby mode via outside temperature
"Cooling mode"
Symbol colour:
Blue: Automatic cooling mode enabled.
Grey: Automatic cooling mode disabled.
"Automatic mode", heating
Symbol colour:
Orange: Automatic heating mode enabled.
Grey: Automatic heating mode disabled.
"Automatic mode", heating/cooling
Symbol colour:
Orange/blue: Automatic heating/cooling mode
enabled.
Grey: Automatic heating/cooling mode disa-
bled.
"Automatic mode", cooling
Symbol colour:
Blue: Cooling mode enabled.
Grey: Cooling mode disabled.
"Automatic mode", ventilation
"Time program", heating
"Time program", ventilation
"Time controlled with sensor priority", ventila-
tion
"Continuous operation", ventilation
External hook-up: The behaviour of the
Viessmann appliance is determined by another
control unit, e.g. EM-EA1 extension (DIO elec-
tronics module). The operating program cannot
be changed via the control unit or remote control
while the external hook-up is active.
Messages
Error
Warning message
Using the remote control
Using the remote control (cont.)
5839615
Operation
23


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