Error code
Message
Description
E02.13
Blocking Input
Blocking Input of the Control Unit from device external environment
E02.15
Ext CSU Timeout
External CSU Timeout
E02.41
FG press sw present
The Fluegas pressure switch is present
E02.42
Flue T press sw pres
Flue temperature pressure switch is present
E02.44
FG press
Fluegas pressure switch not switched error
8.4
Alarm codes
An alarm code is a temporary boiler status resulting from the detection of an anomaly. If an alarm code still remains after several
automatic start-up attempts, the boiler goes into fault mode.
When one of the codes below is displayed, contact the professional responsible for maintenance of the boiler.
Tab.46 List of alarm codes
Alarm code
Message
Description
A00.32
TOutside Open
Outside temperature sensor is either removed or measures a temperature
below range
A00.33
TOutside Closed
Outside temperature sensor is either shorted or measures a temperature
above range
A00.34
TOutside Missing
Outside temperature sensor was expected but not detected
A00.81
RoomTempMissing
Room Temperature sensor was expected but not detected
A02.18
OBD Error
Object Dictionary Error
8.5
Resetting the burner safety unit
If the indicator light on the safety unit is red, there is a burner fault.
1. Reset the burner safety unit by pressing and holding the reset button
for one second.
Important
To reset the safety unit, the burner must be switched on.
2. If the burner fault persists, contact the professional who handles
maintenance of the boiler.
8.6
List of burner faults
Before carrying out any work, the following checks must be performed:
Check that the boiler and the burner are switched on.
Check that the oil supply is correct.
Check that there is a heating demand for the regulator or thermostat on the boiler.
Check that the flue gas circuit allows correct combustion.
If one of the codes below is displayed, contact the professional responsible for maintenance of the boiler.
Fig.21
MW-5000917-2
8 Troubleshooting
32
CFU
7740570 - v04 - 03112022
