There Is No Hot Water; The Dhw Is Too Hot; Burner Fault" Is Displayed; Active Messages" Is Displayed - Viessmann VITODENS 100-W B1HE Operating Instructions Manual

What to do if...

There is no Hot Water

Cause
The boiler is switched off.
Incorrect control unit settings.
No fuel.
"Error message" is displayed.

The DHW is too Hot

Cause
Incorrect control unit settings.
The hygiene function is switched on.

"Burner fault" is Displayed

Cause
Burner fault

"Active messages" is Displayed

Cause
The time for a service as specified by your contractor
has arrived.
or
System fault

"Trade fair mode" is Displayed

Cause
Trade fair mode is active. No heating, no DHW heating.
30
Vitodens 100-W B1HE/B1KE Operating
Remedy
Turn on the ON/OFF switch
Switch on the power supply to your system,
e.g. at a separate MCB/fuse or mains isolator.
Central heating must be enabled.
Check the settings and correct if necessary:
Operating program: See page 16.
DHW temperature: See page 16.
Time: See page 19.
Time program for DHW heating: See page 13.
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
Check what type of fault it is. Make a note of the fault
message and acknowledge the fault: See page 25. If
necessary, notify your contractor.
Remedy
Check and correct the set DHW temperature if necessary:
See page 16.
Wait until the hygiene function has been completed.
Remedy
Proceed as described on page 25.
Remedy
Proceed as described on page 25.
Remedy
Notify your contractor.