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Error
Anomaly signalled
Code
20
Parasite flame block
Return probe
23
anomaly
Push button control
24
panel anomaly
Flue probe anomaly
29
Loss of remote control
31
communication
Low power supply
37
voltage
Loss of flame signal
38
Block due to loss of
43
flame signal
45
ΔT high
Burner power
47
limitation
High temperature
49
block on return probe
CAR Wireless
communication
51
failure
(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
Cause
This occurs in the event of a leak on the detection circuit or
anomaly in the flame control unit.
The board detects an anomaly on the return NTC probe.
The board detects an anomaly on the pushbutton panel.
The board detects an anomaly on the flue gas probe.
This occurs if an incompatible remote control is connected,
or if communication between the boiler and the remote
control is lost.
This occurs when the power supply voltage is lower than the
allowed limits for the correct boiler operation.
This occurs when the boiler is ignited correctly and the
burner flame switches off unexpectedly; a new attempt at
ignition is performed and if normal conditions are re-
stored, the boiler does not have to be reset.
This occurs if the ''Flame signal loss'' error occurs many
times in a row within a preset period (38).
The boiler detects a sudden, unexpected increase in the ΔT
between the flow probe and the system return probe.
Should flue high temperature be detected, the boiler reduc-
es power supplied so as not to damage it.
The temperature measured by the return probe is above
90°C. The block is with manual reset.
If there is no communication between the boiler and Wire-
less version CAR, an anomaly is signalled. From this mo-
ment, it is only possible to control the system by means of
the control panel of the boiler itself.
Boiler status / Solution
Press the Reset button (1).
The boiler does not start (1).
If normal conditions are restored the
boiler restarts without having to be
reset (1).
The boiler does not start (1).
Disconnect and reconnect the power
to the boiler. If the Remote Control is
still not detected on re-starting, the
boiler will switch to local operating
mode, i.e. using the controls on the
control panel. In this case the "Central
Heating" (1) function cannot be
activated.
If normal conditions are restored the
boiler restarts without having to be
reset (1).
If normal conditions are restored the
boiler restarts without having to be
reset (1) (2).
Press the Reset button, before
restarting, the boiler will run a
post-ventilation cycle (1).
The power of the burner is limited to
prevent damage to the condensation
module and once the right ΔT is
restored, the boiler resumes regular
operation. Make sure there is water
circulating in the boiler, that the pump
is configured according to system
requirements and that the return
probe works properly (1) (2).
(1).
The error disappears when the
temperature detected by the return
probe drops below 70°C. Press the
Reset button (1)
Check operation of the Wireless CAR,
check the battery charge (refer to the
relative instructions booklet).
57
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