Flashing Codes - Viessmann SCU224 User Manual

SCU224
System screen
system screen
collector 1
valve
pumps
tank heat exchanger

2.3 Flashing codes

System screen flashing codes
LED flashing codes
sensors
collector 2
tank
Collectors
with collector sensor
Tanks 1 and 2
with heat exchanger
3-way valve
The flow direction or the
actual switching position is
shown
The system screen (active system layout) shows the system
selected on the controller. It consists of several system
component symbols, which are – depending on the current
status of the system – either flashing, permanently shown
or hidden.
tank sensor
at the top
heating circuit
tank 2 or backup heating (with
an additional symbol)
• Pumps are flashing during initialization phase
• Sensor symbols are flashing if the corresponding sensor
display channel is selected.
• Sensors are flashing in the case of a sensor fault.
• Burner symbol is flashing if the backup heating is active
green: everything OK
red/green flashing initialization phase
manual operation
red flashing: sensor fault
(sensor symbol is flashing quickly)
valve
sensor
additional symbol for
operation of the burner
Temperature sensor
Heating circuit
Pump
Backup heating
with burner symbol
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