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Vitodens 100-W, B1HA series & B1KA Combi Operating
Troubleshooting
Cause Remedy
The heating system is off.
- Turn on the ON/OFF switch
8 (see diagram on page 8).
- Switch ON the mains power switch, if installed
(outside the boiler room).
- Reset the circuit breaker in the power distribution.
Control unit or remote control incorrectly adjusted. Check settings and correct if required:
- DHW heating must be enabled (see page 13).
No fuel. 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.
is shown on the display
Notify your heating contractor of the fault code shown.
and the fault code flash on the display. The burner
does not start.
Reset burner fault (see page 16).
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 analyze the cause and rectify the fault.
There is no Hot Water
The DHW is too Hot
Cause Remedy
The control unit is incorrectly adjusted. Check and correct the DHW temperature if required
(see page 13).
and Fault Code Flashes on the Display
Cause Remedy
The burner does not start. Reset burner fault (see page 15).
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 analyze the cause and rectify the fault.
is Shown on the Display
Cause Remedy
Heating system fault. Inform your heating contractor of the fault code.
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