Permanent loss of communication between gas valve and
E.02
.17
boiler board
E.02
.19
Dip-switch status change j=1 (paragraph 6.6.1)
E.02
.20
Dip-switch status change j=2 (paragraph 6.6.1)
E.02
.21
Dip-switch status change j=3 (paragraph 6.6.1)
E.02
.47
Connection with external device failed
E.02
.48
Configuration of external device failed
E.04
.00
Gas valve fault
E.04
.01
Flow temperature sensor short-circuited
E.04
.02
Flow temperature sensor not connected
E.04
.03
Maximum flow temperature exceeded
E.04
.04
Fume sensor short-circuited
E.04
.05
Fume sensor not connected
E.04
.06
Critical fume temperature value reached
E.04
.08
Maximum safety temperature value reached
E.04
.10
Ignition of burner failed after 5 attempts
E.04
.12
Failed ignition due to detection of parasite flame
E.04
.13
Fan rotor blocked
E.04
.17
Gas valve control circuit fault
When the boiler is connected to a Room Unit, in case of faults code "254" is always displayed. Look for the fault code on the
display.
7730585(02-11/19)
Check for electromagnetic interferences
BOILER CONFIGURATION CHANGE
Press reset for approx. 2 seconds
BOILER CONFIGURATION CHANGE
Press reset for approx. 2 seconds
BOILER CONFIGURATION CHANGE
Press reset for approx. 2 seconds
ELECTRIC CONNECTION ERROR
Check the X14-A / X12-B connection
Replace the electric connection card
Check the instructions of the external device
SENSOR/CONNECTION ERROR
Check the sensor/board connection
Check the operation of the sensor
SENSOR/CONNECTION ERROR
Check the sensor/board connection
Check the operation of the sensor
Check the boiler/system circulation
Check the operation of the sensors
Check the operation of the fume sensor
Check the sensor/board connection
SENSOR/CONNECTION ERROR
Check the operation of the fume sensor
Check the sensor/board connection
Check the chimney for obstructions
Check the operation of the sensor
Check the operation of the pump
Check the boiler/system circulation
Check the operation of the safety thermostat
Check the connection of the safety thermostat
Check the electric connection of the gas valve
Check the operation of the gas valve
Check the electric connections of the electrode
Check the status of the electrode
Check the condition of the fume exhaust (obstructions)
Check the power supply voltage.
Check the connection between the board and the fan
14
MAIN BOARD ERROR
Replace the main board
MAIN BOARD ERROR
Replace the main board
INSUFFICIENT CIRCULATION
Activate a manual vent cycle
FUME SENSOR FAULT
CHIMNEY OBSTRUCTION
FUME SENSOR FAULT
INSUFFICIENT CIRCULATION
Check the system pressure
Activate a manual vent cycle
OTHER CAUSES
GAS SUPPLY
Check the gas supply pressure
Check the gas valve calibration
ELECTRODE PROBLEM
OTHER CAUSES
Check the operation of the fan
Check the earth circuit
BOARD/FAN ERROR
Change the air-gas unit
MAIN BOARD ERROR
Replace the main board