The Dhw Is Too Hot; Ã " Flashes On The Display; E " Flashes On The Display; Ë " Flashes On The Display - Viessmann Vitocrossal 100 Operating Instructions Manual

There is no hot water
Cause
No fuel.
" " is shown on the display.
" " is shown on the display.

The DHW is too hot

Cause
The control unit is set incorrectly.
" " flashes on the display
ã
Cause
Heating system fault
" " flashes on the display
E
Cause
Heating system fault
Burner fault
" " flashes on the display
ë
Cause
The time for a service, as specified by your heating
contractor, has arrived.

"- - EP - -" flashes on the display

Cause
The operating program set at the control unit was
changed over by an external device.
(cont.)
Remedy
For operation with LPG:
Check the fuel reserves and re-order if required.
For operation with natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
Press "R" (see page 10).
Acknowledge the fault message with OK (see page 17).
Notify your heating contractor of the fault code if the
fault reoccurs.
Inform your heating contractor of the fault code.
Acknowledge the fault message with OK (see page 17).
Remedy
Check and correct the DHW temperature if required
(see page 13).
Remedy
Inform your heating contractor of the fault code.
Acknowledge the fault message with OK (see page 17).
Remedy
Press "R" (see page 10).
Acknowledge the fault message with OK (see page 17).
Notify your heating contractor of the fault code if the
fault reoccurs.
Remedy
Notify your heating contractor. Acknowledge the service
message with OK (see page 16).
Remedy
If required, you can change over the operating pro-
gram.
What to do if...
21