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Logamatic EMS RC35 programming unit - Subject to technical modifications
51
Troubleshooting
10
A11 804 internal error Heating system is in
emergency mode.
Internal runtime error
in RC35.
B Replace RC35.
A11 806 Room
temperature
sensor is
defect.
Since the actual room
temperature is
missing, the following
cannot function:
Room influence (for
weather-
compensated
control)
Switching point
optimisation
In the case of room
temperature-
dependent control, the
system is regulated to
max. temperature for
HCx.
Faulty integral
temperature sensor on
the heating circuit's
programming unit /
remote control unit.
B Replace the remote
control unit.
A11 816 No commu-
nication with
RC35.
RC20/RF unable to
transmit data to RC35.
Room temperature
control therefore not
possible for HC.
RC20/RF has
incorrect address.
B Check the address
(parameter P1) in
RC20/RF.
RC35 not present or
not connected
correctly.
B Check connection
to RC35.
A12 815 Low loss
header
sensor
faulty.
This may result in the
following heating
circuits receiving
insufficient heat.
Temperature sensor is
incorrectly connected
or fitted.
Breakage or short cir-
cuit in the sensor lead.
Temperature sensor
faulty.
B Check sensor
connection and
sensor lead.
B Check sensor
mounting.
B Compare resistance
values with the
sensor curve.
A12 816 No commu-
nication with
separator
module.
Heating circuit pump
for heating circuit 1 is
permanently activated.
WM10 or BUS
incorrectly connected
or faulty.
RC35 does not
recognise WM10.
B Check connections
on WM10 and BUS
cable.
B Replace WM10.
SC FC
Events
display
Effect on control
characteristics Possible cause Remedy
Tab. 21 Fault table
51


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