Alarm Codes; Accessing The Error Memory - DeDietrich EASYLIFE ALEZIO O HYBRID User Manual

8 Troubleshooting
Tab.33 List of fault codes
Fault code Message
E00.00 SENS T FLOW OPEN
E00.01 SENS T FLOW
CLOSED
E01.04 FLAME LOSS ERROR
E01.12 RETURN HIGHER
THAN FLOW
E02.13 BLOCKING INPUT
E02.15 EXTERNAL CSU
TIMEOUT
E02.24 SYSTEM FLOW
LOCKING
E02.28 FLUE GAS
PRESSURE SWITCH
ERROR
E02.29 FLUE GAS
TEMPERATURE
SWITCH ERROR
E02.41 FLUE TEMPERATURE
PRESSURE SWITCH
PRESENT
E02.42 FLUE TEMPERATURE
PRESSURE SWITCH
PRESENT
E02.44 FLUE GAS
PRESSURE SWITCH
NOT SWITCHED
ERROR
Tab.34 List of alarm codes
A02.06 WATPRESSURE
WARNING
A02.22 SYSTEM FLOW
WARNING
A02.18 OBD ERROR
8.2

Accessing the error memory

54 200 ESL HYBRID
When one of the following codes is displayed and the boiler cannot restart
automatically, contact a maintenance technician.
When one of the following codes is displayed and the heat pump cannot
restart automatically, contact a maintenance technician.
Description
Boiler flow sensor in open circuit
Boiler flow sensor short circuited
No flame signal
Return temperature higher than the flow temperature for 5 minutes
Input BL open.
Memory read error or memory entry error.
Heating water flow problem
Insufficient flow: open a radiator valve
The circuit is clogged:
Check that the filters are not obstructed.
Clean and flush the installation.
Flue gas pressure switch opened 5 times in 24 hours
Maximum flue gas temperature exceeded 5 times in 24 hours
Presence of a flue gas pressure switch
Presence of a flue gas thermostat
Flue gas thermostat not fitted.
8.1.3

Alarm codes

An alarm code corresponds to a temporary status of the hybrid pump
resulting from the detection of an anomaly. If an alarm code still remains
after several automatic start-up attempts, the hybrid system goes into error
mode.
When one of the following codes is displayed and the hybrid system
cannot restart automatically, contact a maintenance technician.
Water pressure in the installation lower than the minimum pressure
Flow rate in the installation lower than the minimum flow rate
Internal error
The error and fault codes are listed together in the memory.
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