Note
The error code is needed to find the cause of the error quickly and
correctly and for any support from Remeha.
Press the
key for two seconds. If the error code continues to display,
search for the cause in the error table and apply the solution.
Note
If the display does not show
but rather , the boiler must be
switched off and then switched on again 10 seconds later before
the error can be reset.
8.2.1 Error codes
Tab.10 Error codes
Error code
Description
Open circuit in return temperature sensor:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Faulty sensor: replace the sensor
Return temperature sensor short-circuited:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Faulty sensor: replace the sensor
Heat exchanger temperature sensor open:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Faulty sensor: replace the sensor
Open circuit in flue gas sensor:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Faulty sensor: replace the sensor
Flue gas sensor short-circuited:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Faulty sensor: replace the sensor
Flame loss occurs 5 times:
Vent the gas supply to remove air
Check that the gas valve is fully opened
Check the gas supply pressure
Check the operation and setting of the gas valve unit
Check that the air supply inlet and flue gas outlet are not blocked
Check that there is no recirculation of flue gases
Flow and return reversed:
Bad connection: check the wiring and connectors.
Water circulation in wrong direction: check the circulation (direction, pump, valves)
Incorrectly fitted sensor: check that the sensor has been correctly fitted
Malfunctioning sensor: check the Ohmic value of the sensor
Faulty sensor: replace the sensor
Maximum flue gas temperature exceeded:
Check the cleanliness of the heat exchanger
Check the water pressure in the central heating system
Configuration error or factory settings incorrect:
Parameters are not correct:
Restart boiler
Reset
and
Replace the control unit
Blocking input is active:
External cause: remove external cause
Wrong parameter set: check the parameters
8 Troubleshooting
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