Viessmann VITOCAL 300-G Installation And Service Instructions For Contractors page 62

Commissioning, inspection, maintenance
Checking the system function
Displaying the system overview
The system overview displays the status of the heat
pump and system components as well as the tempera-
tures.
Service menu:
1. Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Diagnosis"
3. "System overview"
4. to toggle between "System overview, generation
side" and "System overview, consumption side"
Carrying out a function check
The function test serves to check the proper function-
ing of the different system components.
Service menu:
1. Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Service functions"
3. "Function check"
Resetting the instantaneous heating water heater
!
Please note
If the heat pump is exposed to temperatures
below 15 °C, e.g. during storage or transport,
–
the high limit safety cut-out of the instantaneous
heating water heater may respond.
Heat up the high limit safety cut-out to above
20 °C. Press the reset button of the high limit
safety cut-out: See Fig. 41.
62
"Vitotronic 200" service instructions
Note
The "System overview generator" also displays the
output of the primary and secondary pump.
To prevent the evaporation temperature from exceed-
ing the application limit when flow temperatures in the
primary circuit are high (e.g. during commissioning),
the output of the primary pump is temporarily reduced.
This is a safety function to protect the heat pump mod-
ule.
4. Start the required function, e.g. "DHW". Only those
functions are shown that correspond to the actual
system equipment level.
During the function check, the system overview is
displayed.
5. Terminate function with
"Vitotronic 200" service instructions
A
Fig. 41
Reset button
A
.