There Is No Hot Water; The Dhw Is Too Hot; And The Fault Code Flash On The Display; Is Shown On The Display - Viessmann VITODENS 111-W Operating Instructions Manual

There is no hot water

Cause
The heating system is off.
Control unit incorrectly set.
No fuel.

" " is shown on the display.

" " and the fault code flash on the display. The burner
does not start.

The DHW is too hot

Cause
The control unit is set incorrectly.

" " and the fault code flash on the display

Cause
The burner does not start.
" " is shown on the display
Cause
Heating system fault
Remedy
Turn ON the ON/OFF switch " " (see page 8).
■
Switch ON the mains isolator if installed (outside the
■
boiler room).
Set the MCB in the power distribution board (main do-
■
mestic MCB).
Check and correct the DHW temperature (see page 14)
With LPG:
Check the fuel reserves and re-order if required.
For natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
Notify your heating contractor of the fault code shown.
Reset burner fault (see page 18).
Notify your heating contractor if the fault recurs.
Danger
If faults are not rectified, they can have life
threatening consequences.
Do not reset the burner fault several times in
quick succession. Notify your heating contractor
if a fault recurs. Your heating contractor will be
able to analyse the cause and rectify the fault.
Remedy
Check and correct the DHW temperature (see page 14)
Remedy
Reset burner fault (see page 18).
Notify your heating contractor if the fault recurs.
Danger
If faults are not rectified, they can have life
threatening consequences.
Do not reset the burner fault several times in
quick succession. Notify your heating contractor
if a fault recurs. Your heating contractor will be
able to analyse the cause and rectify the fault.
Remedy
Inform your heating contractor of the fault code.
What to do if...
17