DeDietrich ESSENCIO CF 22, User Manual

Page: 34 / 44

8 Troubleshooting
8.1 Resolving operating errors
If the boiler malfunctions, a code is displayed on the main screen of the
control panel. This code is important for the correct and rapid diagnosis of
the type of malfunction and for any technical assistance that may be
needed.
There are 3 types of error:
Tab.43
Type of code Code format
Error Hxx.xx
Fault Exx.xx
Alarm Axx.xx
1. Make a note of the code displayed on the screen.
2. Remedy the problem described by the error code or contact the
installer.
3. Switch the boiler off and back on to check that the cause of the error
has been removed.
4. If the code is displayed again, contact the installer.
8.2 Error codes
An error code is a temporary status resulting from the detection of an
anomaly on the boiler.
When one of the codes below is displayed, contact the professional
responsible for maintenance of the boiler.
Tab.44 List of error codes
Error code Message Description
H00.00 TFlow Open Flow temperature sensor is either removed or measures a temperature below
range
H00.01 TFlow Closed Flow temperature sensor is either shorted or measures a temperature above
range
H00.06 TReturn Missing Return temperature sensor was expected but not detected
H00.16 DHW sensor Open Domestic Hot Water tank temperature sensor is either removed or measures a
temperature below range
H00.17 DHW sensor Closed Domestic Hot Water tank temperature sensor is either shorted or measures a
temperature above range
H00.32 TOutside Open Outside temperature sensor is either removed or measures a temperature
below range
H00.33 TOutside Closed Outside temperature sensor is either shorted or measures a temperature
above range
H00.79 TSwimming Pool Open Swimming Pool Flow temperature sensor is either removed or measures a
temperature below range
H00.80 TSwimmingPool Closed Swimming Pool Flow temperature sensor is either shorted or measures a
temperature above range
H01.03 Flame Loss Warning Warning off uninteded flame loss detection
H02.00 Reset In Progress Reset In Progress
H02.02 Wait Config Number Waiting For Configuration Number
H02.03 Conf Error Configuration Error
H02.04 Parameter Error Parameter Error:
H02.05 CSU CU mismatch CSU does not match CU type
H02.09 Partial block Partial blocking of the device recognized
H02.10 Full Block Full blocking of the device recognized
8 Troubleshooting
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