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2.5 FAULT AND ANOMALY SIGNALS.
The boiler signals any anomalies using a code shown on the boiler
display (19) according to the following table:
Error
Code
Anomaly signalled
Cause
Boiler status / Solution
01
No ignition
ignition
In the event of request of room central heating or domestic
hot water production, the boiler does not switch on within the
preset time. Upon appliance commissioning or after extended
downtime, it may be necessary to eliminate the block.
Press the Reset button (1)
02
Safety thermostat
function block (NTC
flow/return overheating)
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
Press the Reset button (1)
03
Flue safety thermostat
block
During normal operation, if a fault causes excessive flue gas
overheating, the boiler blocks
Press the Reset button (1)
04
Contacts resistance
block
The P.C.B. detects a fault on the gas valve supply. Check its con-
nection. (the anomaly is detected and displayed only in the event
of a request).
Press the Reset button (1)
05
Storage tank probe
flow
The board detects an anomaly on the flow NTC probe.
The boiler does not start (1)
06
Storage tank probe
domestic hot water
The board detects an anomaly on the domestic hot water NTC
probe. In this case the antifreeze function is also inhibited
In this case the boiler continues to produce
domestic hot water but not with optimal
performance (1)
08
Maximum N° of resets
Number of allowed resets already performed.
The anomaly can be reset 5 consecutive
times, after which the function is inhibited
for at least one hour and it is possible to try
once every hour, for a maximum of 5 at-
tempts. By switching the appliance on and
off again, the 5 attempts are re-acquired.
10
Insufficient system
pressure
Sufficient water pressure inside the central heating circuit to guar-
antee the correct operation of the boiler is not detected.
Check on the boiler pressure gauge that the
system pressure is between 1-1.2 bar and
restore the correct pressure if necessary.
15
Configuration error
If the board detects an anomaly or incongruity on the
electric wiring, the boiler will not start.
If normal conditions are restored the
boiler restarts without having to be re-
set. Check that the boiler is configured
correctly (1)
16
Fan anomaly
This occurs if the fan has a mechanical or electrical fault.
Press the Reset button (1)
20
Parasite flame block
This occurs in the event of a leak on the detection circuit or
anomaly in the flame control unit.
Press the Reset button (1)
23
Return probe anomaly
The board detects an anomaly on the return NTC probe
The boiler does not start (1)
24
Push button control
panel anomaly
The board detects an anomaly on the pushbutton panel.
If normal conditions are restored the
boiler restarts without having to be reset
(1).
27
Circulation
insufficient
This occurs if there is overheating in the boiler due to insufficient
water circulating in the primary circuit; the causes can be:
- low system circulation; check that no shut-off devices are closed
on the heating circuit and that the system is free of air (deaer-
ated);
- pump blocked; free the pump.
Press the Reset button (1).
29
Flue probe anomaly
The board detects an anomaly on the flue probe
The boiler does not start (1)
31
Loss of
remote control
communication
This occurs if an incompatible remote control is connected, or
if communication between the boiler and the remote control
is lost.
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.
37
Low power supply
voltage
This occurs when the power supply voltage is lower than the
allowed limits for the correct boiler operation.
If normal conditions are restored the boiler
restarts without having to be reset (1)
(1) If the block or anomaly persists, contact an authorised company (e.g. Immergas Technical After-Sales Service)
(2) The anomaly can only be verified in the list of errors in the “Information” menu
