Vitodens 100-W B1HE/B1KE Operating
6167 819 - 01
30
What to do if...
There is no Hot Water
The DHW is too Hot
Cause
Remedy
Incorrect control unit settings.
Check and correct the set DHW temperature if necessary:
See page 16.
The hygiene function is switched on.
Wait until the hygiene function has been completed.
Cause
Remedy
The boiler is switched off.
Turn on the ON/OFF switch
Switch on the power supply to your system,
e.g. at a separate MCB/fuse or mains isolator.
Incorrect control unit settings.
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.
No fuel.
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
“Error message” is displayed.
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.
“Burner fault” is Displayed
Cause
Remedy
Burner fault
Proceed as described on page 25.
“Active messages” is Displayed
Cause
Remedy
The time for a service as specified by your contractor
has arrived.
or
System fault
Proceed as described on page 25.
“Trade fair mode” is Displayed
Cause
Remedy
Trade fair mode is active. No heating, no DHW heating.
Notify your contractor.