Operating instructions
Logamatic EMS RC35 programming unit - Subject to technical modifications
51
Troubleshooting
7
Plant errors and service messages
The display shows please open cover in the bottom row on the display. The heating system stays
operational for as long as possible; in other words, central heating can continue.
1. Open the flap (by pulling the recessed grip on the left).
2. Turn rotary selector .
The display indicates whether there is a fault message (= plant error) or a servicing message.
The display may show the name and telephone number of your heating contractor if these are
programmed.
3. Turn rotary selector (several times if necessary, if there are multiple messages) to display the
message and the code (in the last row on the display).
4. Check whether the message can be removed using Tab. 14.
5. Otherwise notify your heating contractor (stating the message and code).
To return to the standard display:
B Press or close the flap.
Code Display Cause Remedy
Nothing appears on
the display
Heating system has been
switched off.
B Switch on the heating
system.
The power supply to the heating
system has been interrupted.
B Check that the programming
unit is correctly seated in its
wall mounting base.
B Check that the cables are
connected on the
programming unit wall
mounting base.
RC35 version: ...
connect to: ...
connection setup...
After start-up, data is transferred
between EMS/UBA and the
RC35 (no fault).
B Wait a few seconds.
A01/
816
No communication
with UBA/MC10/
DBA or UBA-H3.
Communication to EMS/UBA is
faulty, possibly due to a loose
contact or electromagnetic
interference, for example.
B Check that the programming
unit is correctly seated in its
wall mounting base.
B Check that the cables are
connected on the
programming unit wall
mounting base.
A11/
802
Time is not yet set. Time or date settings are
missing. This may have been
caused by a lengthy power
failure, for example.
B Enter the time or date so that
the switching program and
other functions can work
correctly.
A11/
803
Date is not yet set.
Tab. 14 Table with plant errors and service messages