57
INS
TALLER
U
SER
M
AINTEN
AN
CE
TECHNI
CI
AN
TECHNI
CAL
D
AT
A
Error
Code
Anomaly signalled
Cause
Boiler status / Solution
77
Combustion control
fault
Out of range current is detected on the gas valve.
The boiler does not start (1)
78
Combustion control
fault
High current on the gas valve is detected.
The boiler does not start (1)
79
Combustion control
fault
Reduced current on the gas valve is detected.
The boiler does not start (1)
80
Block - gas valve
driver issue
This occurs in the event of malfunctions of the P.C.B. that
controls the valve.
Faulty valve
Press the Reset button (1)
84
Combustion anomaly
- power reduction in
progress
A low supply pressure is detected on the gas line. As a result
the appliance power is limited and the anomaly is reported.
If normal conditions are restored the
boiler restarts without having to be
reset (1) (2)
87
Block - gas valve
control
A malfunction of one of the components that controls the
gas valve has been detected.
The boiler does not start (1)
88
Block - gas valve
control
A malfunction of one of the components that controls the
gas valve has been detected.
The boiler does not start (1)
89
Combustion signal
unstable
The flame is unstable due to: presence of flue gas recircula-
tion, wind, unstable gas pressure, unstable fan speed, or
due to system malfunction.
The boiler keeps working (1) (2)
90
Combustion signal
beyond limit
The combustion signal is beyond the adjustment range re-
quired for an extended period of time.
The boiler keeps working (1) (2)
91
Incorrect ignition
block
The board has exhausted all possible actions in order to ob-
tain optimal ignition of the burner.
Press the Reset button (1)
92
Fan revs correction
limit
The system has exhausted all possible corrections of the
number of fan revs.
The boiler keeps working (1) (2)
93
Combustion signal
beyond limit
The combustion signal is beyond the adjustment range re-
quired for a limited period of time.
The boiler keeps working (1) (2)
94
Combustion anomaly
A problem is detected on the combustion control, which
may be due to: gas low pressure, flue recirculation, defective
gas valve or P.C.B.
If normal conditions are restored the
boiler restarts without having to be
reset (1) (2)
95
Combustion signal
discontinuous
The system detects a discontinuous combustion signal.
The boiler keeps working (1) (2)
96
Clogged flue
This occurs in the event an obstruction is detected in the
flue system.
The boiler does not start (1)
If normal conditions are restored the
boiler restarts without having to be
reset
98
Block - maximum no.
of software errors
The maximum number of software errors possible has been
reached.
Press the Reset button (1)
99
General block
A boiler anomaly has been detected.
Press the Reset button (1)
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre)
(2) The anomaly can only be verified in the list of errors in the “Information” menu