20 Troubleshooting
Only one error is displayed at a time, so the following
table indicates the priority of each error.
Fault
Possible cause of the fault
Effects on control
characteristics
Remedy
Burner fault
BURNER ERROR
Burner control
Boiler not working
Central heating stays cold
Eliminate the burner fault as
described in the boiler or
burner documentation.
Boiler sensor error
BLR SENSOR ERROR
Sensor defective.
Connecting cable
interrupted
The boiler is enabled with
maximum output (emergency
mode via thermostat is
possible).
Check the sensor
connection.
Replace the sensor
Outdoor sensor error
OA SENSOR ERROR
Sensor defective.
Connecting cable
interrupted
The minimum outdoor
temperature is expected
(outdoor temp.: 14°F (-10°C))
Check the sensor
connection.
Replace the sensor
DHW sensor error
DHW SENSOR ERROR
Sensor defective.
Connecting cable
interrupted
DHW tank no longer being
topped up
Solar pump is switched off
Check the sensor
connection.
Replace the sensor
Collector sensor error
SL SENSOR ERROR
Sensor defective.
Connecting cable
interrupted
Solar module (FM 244)
defective
Solar pump is switched off
Check the sensor
connection.
Replace the sensor
Replace the module
Solar hot water sensor error
DHW-SL ERROR
Sensor defective.
Connecting cable
interrupted
Solar module (FM 244)
defective
Solar pump is switched off
Check the sensor
connection.
Replace the sensor
Replace the module
Heating error
HEATING ERROR
Boiler water thermostat set
too low.
Manual reset high limit (STB)
tripped
No fuel
Sensor not arranged correctly
No boiler protection
Boiler stays cold
Set boiler water thermostat to
"AUT"
Manual reset high limit (STB)
Check the fuel
Check the sensor position
DHW error
DHW PROD ERROR
Sensor not mounted correctly
Filling pump is connected
incorrectly or defective.
Constant attempts are made
to top up the DHW, but with a
reduced boiler supply setpoint
temperature.
Check sensor and pump
Manual mode
Remote control 1 error
REMOTE1 ERROR
Remote control has wrong
address
Incorrect wiring
Remote control is defective
Connecting cable
interrupted
There is no current room
temperature measurement,
so the ambient influence,
switch-on and switch-off
optimization and automatic
adaptation do not apply.
Check the address
Check the wiring
Replace the remote control
Remote control 2 error
REMOTE2 ERROR
Remote control has wrong
address
Incorrect wiring
Remote control is defective
Connecting cable
interrupted
There is no current room
temperature measurement
available, so the ambient
influence does not apply
Check the address
Check the wiring
Replace the remote control
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.
6
0
5
4
20
Troubleshooting