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24
INS
T
ALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Error
Code
Anomaly signalled
Cause
Boiler status / Solution
46
Low temperature
safety thermostat
(optional)
During normal operation, if an anomaly causes excessive over-
heating of the flow temperature in low temperature conditions,
the boiler blocks.
In this case, after suitable cooling, it is pos-
sible to reset the thermostat (see relative
instructions sheet). (1).
47
Burner power limi-
tation
Should flue high temperature be detected, the boiler reduces power
supplied so as not to damage it.
(1)
51
CAR Wireless com-
munication failure
If there is no communication between the boiler and Wireless
version CAR, an anomaly is signalled. From this moment, it is
only possible to control the system by means of the control panel
of the boiler itself.
Check operation of the Wireless CAR,
check the battery charge (refer to the
relative instructions booklet).
59
Main supply voltage
frequency block
The board detects a main supply voltage frequency anomaly
The boiler does not start (1)
62
Complete calibration
required
Missing calibration is detected by the P.C.B. It may occur in the
event the P.C.B. is replaced or if the parameters are altered in the
air / gas section, thus requiring “complete calibration”.
The boiler does not start (1)
72
Fast calibration re-
quired
The P.C.B. detects that some parameters have been altered, thus
requiring “fast calibration”.
The boiler does not start (1)
73
High
fl
ow probe and
safety
fl
ow probe devi-
ation detected.
The board detects an anomaly in the temperature readings of
the NTC flow probes; the causes may be: faulty probe, incorrect
position, poor system circulation, or clogging of the water side
primary heat exchanger.
If normal conditions are restored the boil-
er restarts without having to be reset (1)
74
Safety
fl
ow probe
anomaly
The board detects an anomaly on the NTC safety flow probe
The boiler does not start (1)
77
Combustion control
anomaly
An out of work range current is detected
The boiler does not start (1)
78
Combustion control
anomaly
High current on the gas valve is detected
The boiler does not start (1)
79
Combustion control
anomaly
Reduced current on the gas valve is detected
The boiler does not start (1)
80
P.C.B. malfunction
block
This occurs in the event of malfunctions of the P.C.B. that controls
the 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 con-
trol
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 con-
trol
A malfunction of one of the components that controls the gas
valve has been detected
The boiler does not start (1)
89
Combustion signal un-
stable
The flame is unstable due to: presence of flue gas recirculation,
wind, unstable gas pressure, unstable fan speed, or due to system
malfunction
The boiler keeps working (1) (2)
90
Combustion signal be-
yond limit
The combustion signal is beyond the adjustment range required
for an extended period of time
The boiler keeps working (1) (2)
91
In c or re c t i g n iti on
block
The board has exhausted all possible actions in order to obtain
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 be-
yond limit
The combustion signal is beyond the adjustment range required
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 dis-
continuous
The system detects a discontinuous combustion signal.
The boiler keeps working (1) (2)
96
Clogged
fl
ue
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)
(1) If the block or anomaly persists, contact an authorised company (e.g. Immergas Technical After-Sales Service).
(2)
Th
e anomaly can only be verified in the list of errors in the “Information” menu