49
7. Troubleshooting
BOILER CONDITION
PROBLEM
E 02
Water pressure in the heating system is too low
E 03
The system pressure is too close to the maximum thresholds.
E 04
Domestic hot water circuit probe faulty
E 05
Delivery probe faulty
E 14
Fumes probe faulty
E 13
Fume probe has tripped
E 15
Faulty fan (feedback / power supply)
E 06 +
Failure to start up
E 07 +
The safety thermostat has tripped
E 08 +
Flame error
E 09
No water circulation inside the system
E 16
Return probe faulty
E 20
System over-temperature
E 21
Delta T CH/Ret > TSP82 (1)
E 11
The gas valve modulator is disconnected
E 12
Boiler probe faulty
E 19
Domestic hot water circuit flow meter error
E 28 +
Maximum no. of attempts to unlock from boiler interface has been reached
E 37
Excessively low power voltage
E 40
Wrong network frequency
E 41 +
Flame loss for over 6 consecutive times
E 42
Keys anomaly
E 43
OT communication failure
E 44 +
SGV opening time without flame error
E 62
Request combustion calibration
E 96
Fume exhaust clogged
E 72 +
The Δt between the supply and return is not within thresholds
E 88 +
SGV management circuit failure
E 80 +
SGV opening problem
E 81 +
Shut-down for combustion problems upon ignition (2)
E 87 +
Problem on the SGV circuit
E 91 +
Flame loss for over 6 consecutive times (with max correction ignition to ON)
E 98 +
SW error / board error
E 99 +
Generic fault
Table 13: Troubleshooting
(1) This control gets enabled 120 sec after pump activation and only during the CH request (without domestic hot water).
(2) Fault 81 may be caused by a blockage of the fume exhaust pipe. In this case contact your service centre before unlocking the boiler.
CAUTION
Gas boiler are electrical and electronic equipment (EEE) that become waste electrical and electronic equipment (WEEE) once
decommissioned: therefore, they must be disposed of in accordance with the applicable regulations in force.
Gas boilers are classified as household appliances and must be disposed of together with the washing machines, dishwashers and
tumble-dryers (WEEE R2 waste).
The dismantling and disposal of gas boilers in other ways than those specifically provided by law are forbidden.
The user has the right to send the decommissioned gas boiler, complete in all its parts, to the municipal waste collection and recycling
centre.
The installer and the user have the right to return the decommissioned gas boiler, complete in all its parts, to the point of sale from which
it was purchased for replacement with a new boiler (one for one recycling plan).
