Fault Messages; Acknowledging Fault Messages - Viessmann VITOCAL 200-G Operating Instructions Manual

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Illustration of the operating conditions in the system . . .
6 Operating display; heating circuit
2 pump
7 Position indication of heating cir-
cuit 2 mixer in %
8 Temperature "NC flow"
9 Operating display; primary cooling
circuit pump
qP Temperature "HW buffer sto-
rage"
qQ Temperature "Secondary return"
qW Natural cooling mixer position
indication in %
qE "Primary input" temperature
qR Operating display; primary pump

Fault messages

Faults are captured, displayed and saved by the equipment.
If the system has developed a fault, the fault symbol U will flash in area F of the
display (see page 7) and a red LED flashes in the equipment front panel.
After pressing "Standard display", a maximum of eight faults are displayed in
the order of their priority.
Note
Not in every case is a fault message displayed because the heat pump has
developed a fault.
Fault messages may also be caused by incorrect operating steps or faults on
other system components.
Make a note of the type of fault, (e.g.: "C1 : Net/Compressor"), and notify your
heating contractor accordingly.
This allows the heating contractor to better assess the situation and may save
unnecessary travelling expenses.

Acknowledging fault messages

Any active fault messages will be displayed after opening the programming unit
flap.
40
qT Operating display, compressor
qZ Position indication; "Heat/DHW"
mixer in %
qU Operating display; secondary
pump
qI Operating display; electric heating
with output stage indication (1:
3 kW, 2: 6 kW, 3: 9 kW)
qO Operating display; cylinder pri-
mary pump
wP Temperature "DHW cylinder bot-
tom"
wQ Temperature "DHW cylinder top"
(cont.)