Vitodens 200-W B2HA/B2HB, 222-F B2TA/B2TB Operating
5461 885 - 04
36
Troubleshooting
“ ” Flashes and “Service” is Displayed
Cause Remedy
This function is blocked. Your heating contractor can lift this block.
Cause Remedy
The heating program set at the control unit was changed
by an external device, e.g. extension EA1.
No remedy is required.
Cause Remedy
The heating program set at the control unit was changed
by the Vitocom communication interface
You can change the heating program.
Cause Remedy
The time for a service, as specified by your heating
contractor, has arrived.
Proceed as described on page 32.
“Controls Locked Out” is Displayed
“External Hook-up” is Displayed
”External Program” is Displayed
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