Rooms Are Too Hot; There Is No Hot Water - Viessmann Vitotronic 200 Operating Instructions Manual

Rooms are too hot

Cause
Settings made at the heat pump control unit have been
changed or are incorrect.
"Note", "Warning" or "Fault" is shown.
In conjunction with a ventilation unit:
The bypass does not open.

There is no hot water

Cause
The heat pump is off.
Settings made at the heat pump control unit have been
changed or are incorrect.
"Note", "Warning" or "Fault" is shown.
The DHW is too hot
Cause
Settings made at the heat pump control unit have been
changed or are incorrect.
Remedy
Central heating/central cooling must be enabled.
Check the following settings and correct if required:
Operating program: see page 26.
■
Room temperature: see page 26.
■
Time: see page 49.
■
Time program for central heating/central cooling: see
■
page 27.
Time program for heating water buffer cylinder: see
■
page 27.
Heating curve/cooling curve: see page 28.
■
Enable "Active cooling mode" if required: see
■
page 38.
Check what type of message it is. Acknowledge the
■
message: see page 54.
If necessary, notify your contractor.
■
Check the following settings and correct if required:
Room temperature for ventilation "Set room temper-
■
ature": see page 26.
Minimum temperature for ventilation "Min supply air
■
t. byp": see page 42.
If necessary, notify your contractor.
Remedy
Turn on the ON/OFF switch: see diagrams on
■
page 24 onwards.
Switch ON the mains isolator (if installed, outside the
■
boiler room).
Set the MCB in the power distribution board (main do-
■
mestic MCB).
DHW heating must be enabled.
Check the following settings and correct if required:
Operating program: see page 26.
■
DHW heating: see page 33.
■
Time program DHW heating: see page 34.
■
Time: see page 49.
■
If necessary, enable the electric booster heater for
■
DHW heating (if installed): see page 37.
Check what type of message it is. Acknowledge the
■
message: see page 54.
If necessary, notify your contractor.
■
Remedy
Check and if necessary correct the standard DHW tem-
perature: see page 33.
What to do if...
59