Immergas VICTRIX EXA 28 1 ERP Instruction And Recommendation Booklet page 24

Error
Anomaly signalled
Code
Return probe
23 The board detects an anomaly on the return NTC probe.
anomaly
Push button control
24 The board detects an anomaly on the pushbutton panel.
panel anomaly
Block due to flue
If the board detects a rapid increase in flue gas temperature probably due
gas temperature
25 to a blocked circulating pump or lack of water in the heat exchanger, the
gradient interven-
boiler shuts down due to the flue gas temperature gradient trip.
tion
This occurs if there is overheating in the boiler due to insufficient water
circulating in the primary circuit; the causes can be:
Insufficient circula-
27
- low system circulation; check that no shut-off devices are closed on the
tion
- pump blocked; free the pump.
29 Flue probe anomaly The board detects an anomaly on the flue gas probe.
Loss of remote
This occurs if an incompatible remote control is connected, or if com-
control communi-
31
munication between the boiler and the remote control is lost.
cation
Communication between the various components is interrupted due to
IMG Bus communi-
36 an anomaly on the boiler control unit, on the zone control unit or on
cation loss
the IMG Bus.
Low power supply
This occurs when the power supply voltage is lower than the allowed limits
37
voltage for the correct boiler operation.
This occurs when the boiler is ignited correctly and the burner flame goes
out unexpectedly; a new ignition attempt is performed and if normal con-
Loss of flame signal
38
ditions are restored, the boiler does not have to be reset (this anomaly can
only be checked in the list of errors present in the "Information" menu).
Block due to loss of
This occurs if the ''Flame signal loss'' error occurs many times in a row
43 continuous flame
within a preset period (38).
signal
Block for exceeding
the maximum accu- This occurs if the gas valve remains open for longer than required for
44
mulated time, close
normal operation, without the boiler switching on.
gas valve opening
If the board detects a sudden and unexpected rise in ΔT between the
system flow probe and return probe, the boiler limits the burner output
ΔT high
45
to prevent damaging the condensing module; when the correct ΔT has
been restored, the boiler returns to normal operation.
Low temperature
During normal operation, if an anomaly causes excessive overheating of
safety thermostat
46
the flow temperature in low temperature conditions, the boiler blocks.
(optional)
Burner power
Should flue high temperature be detected, the boiler reduces power sup-
47
limitation
plied so as not to damage it.
High temperature
This occurs when the heat exchanger return circuit reaches a temperature
block on return
49
that is too high.
probe
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Technical After-Sales Service).
Cause
heating circuit and that the system is free of air (deaerated);
24
Boiler status / Solution
The boiler does not start (1).
If normal conditions are restored the boiler
restarts without having to be reset (1).
Press the Reset button (1).
Press the Reset button (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" function cannot
be activated. (1).
The boiler does not satisfy the room heating
requests (1).
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).
Press the Reset button, before restarting, the
boiler will run a post-ventilation cycle. (1).
Press the Reset button (1).
Make sure there is water circulating in the
boiler, that the pump is configured accord-
ing to system requirements and that the
return probe works properly (1).
In this case, after suitable cooling, it is pos-
sible to reset the thermostat (see relative
instructions sheet) (1).
(1).
Make sure that water circulates properly
in the boiler and that the three-way valve
works properly. Press the Reset button (C)
to eliminate it (1).