Viessmann VITOTRONIC 200, Operating Instructions Manual

Page: 45 / 72

45
Cause Remedy
The heating system is off.
■
Turn on the ON/OFF switch (see page 41).
■
Switch ON the mains isolator if installed (outside the
boiler room).
■
Set the MCB in the power distribution board (main do-
mestic MCB).
■
Control unit incorrectly adjusted.
■
The remote control (if installed) is set incorrectly.
Separate operating instructions
DHW heating must be set.
Check the settings and correct if required:
■
Operating program (see page 17)
■
DHW temperature (see page 28)
■
Time (see page 31)
■
Time programs for DHW heating (see page 28)
■
Heating curve (see page 23)
No fuel. With oil or 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.
"Fault" is displayed. Check what type of fault it is. Acknowledge the fault
(see page 38). If necessary, notify your contractor.
"Burner fault" is displayed.
■
Vitotronic 300, type CM1E and Vitotronic 100,
type CC1E:
Press the burner reset button.
See separate boiler or burner instructions.
■
Vitotronic 300, type CM1I and Vitotronic 100,
type CC1I:
Follow the instructions on the display: See page 38.
Contact your contractor if the burner still fails to start.
Danger
If faults are not rectified, they can have life
threatening consequences.
Do not acknowledge fault messages several
times in quick succession. Notify your contractor
if a fault recurs. Your contractor will be able to
analyse the cause and rectify the fault.
"External hook-up" enabled. No action required.
The operating program set at the control unit was e.g.
changed over via an externally connected button.
Example: In a school, heating demand exists outside of
school times, e.g. for a parents’ evening.
This function cannot be influenced via the control unit.
Once the external changeover no longer applies, the
set operating program becomes active again.
"External program" enabled. The operating program set at the control unit has been
changed by another control device.
You can change the operating program on the
Vitotronic control unit.
What to do if...
There is no hot water
5863758