Rooms Are Too Hot - Viessmann Vitotronic 200 Series Operating Instructions For The System User

What to do if...
Rooms are too cold
Cause
Vitoair draught stabiliser faulty.
Mixer motor faulty.

Rooms are too hot

Cause
Control unit set incorrectly.
■
Remote control (if installed) set incorrectly.
■
Separate operating instructions
"Fault" is displayed, and the red fault indicator flashes.
Mixer motor faulty.
There is no hot water
Cause
The heating system is off.
Control unit set incorrectly.
■
Remote control (if installed) set incorrectly.
■
Separate operating instructions
No fuel.
38
(cont.)
Remedy
Contact your local heating contractor.
Press the rotary selector on the motor and turn it past
position as far as it will go.
A
A
Adjust the mixer manually.
Remedy
Check settings and correct if required:
Operating program (see page 23)
■
Room temperature (see page 23)
■
Time (see page 31)
■
Time program, central heating (see page 23)
■
Heating curve (see page 24)
■
Call up and acknowledge the type of fault (see
page 35).
Adjust the mixer manually.
Remedy
Turn on the ON/OFF switch (see diagrams from
■
page 20).
Switch ON the mains isolator (if installed, outside the
■
boiler room).
Reset the MCB in the power distribution board (main
■
domestic MCB).
DHW heating must be enabled.
Check settings and correct if required:
Operating program (see page 28)
■
DHW temperature (see page 14)
■
Time program, DHW heating (see page 28)
■
Time (see page 31)
■
With oil/LPG:
Check the fuel reserves and re-order if required.
With natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.