Troubleshooting
Logamatic EMS – 6 720 801 386 2011/05
52
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 the rotary selector (if several messages are present, then turn several times), to display
the message and the code (last line in the display).
4. Check whether the message can be removed using Tab. 15.
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 on the
programming unit wall
mounting base are
connected.
RC35 version: ...
connect to: ...
connection setup...
After switching on, data is
transmitted between the EMS/
UBA and RC35 (no fault).
B Wait a few seconds.
A01/
816
No communication
with UBA/MC10/
DBA/UBA-H3 or
HM10.
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 on the
programming unit wall
mounting base are
connected.
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.
Table 15 Table with plant errors and service messages
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