Rooms Are Too Cold - Viessmann VITOTRONIC 200 Operating Instructions Manual

Rooms are too cold

Cause
The heat pump is switched off.
Heat pump control unit set incorrectly.
■
Remote control (if installed) set incorrectly.
■
Separate operating instructions
The DHW cylinder is being heated.
"Note", "Warning" or "Fault" is displayed.
"Screed drying" is active.
In conjunction with ventilation unit:
Bypass does not close.
■
Preheater bank faulty.
■
Supply air/extract air fan faulty.
■
Remedy
Switch the ON/OFF switch ON (see diagrams from
■
page 18).
Switch ON the mains isolator (if installed, outside the
■
boiler room).
Reset the MCB in the power distribution board (main
■
domestic MCB).
Central heating/central cooling must be enabled.
Check settings and correct if required:
Operating program (see page 20)
■
Room temperature (see page 20)
■
Time (see page 38)
■
Time program central heating/central cooling (see
■
page 21).
Time program heating water buffer cylinder (see
■
page 21).
Heating curve/cooling curve (see page 22).
■
If necessary enable the electric booster heater for
■
central heating (if installed, see page 29).
Wait until the DHW cylinder has been heated up.
Possibly reduce the DHW draw-off rate or temporarily
reduce the standard DHW temperature.
Call up the type of message and acknowledge it (see
page 42). If necessary, notify your heating contractor.
No action required.
As soon as the period for screed drying has expired,
the heat pump continues in the selected operating pro-
gram (see page 40).
Inform your local heating contractor.
What to do if...
45