Fault And Anomaly Signals - Immergas EOLO STAR 24 4E Instructions And Warnings

2.5

FAULT AND ANOMALY SIGNALS.

In case of an anomaly, the letter "E" appears on the display alter-
nately with the relevant error code occurred. The error codes are
listed in the following table:
Error
Anomaly signalled
Code
No ignition block
01
Safety thermostat
block (over-tempe-
02
rature)
Flue safety thermo-
03
stat anomaly
Flow probe anomaly
05
Domestic hot water
06
probe anomaly
Maximum N° of
08
resets
Insufficient system
10
pressure
Flue pressure switch
11
anomaly
20 Parasite flame block
Push button control
24
panel anomaly
Insufficient circula-
27
tion
Domestic hot water
28
leakage
Loss of remote con-
31
trol communication.
IMG BUS communi-
36
cation loss
(1) If the shutdown or fault persists, contact an authorised company (e.g. Technical After-Sales Service).
32
Cause
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.
During normal operation, if a fault causes excessive
overheating internally, the boiler goes into overhea-
ting block.
Failure to recognise the flue pressure switch.
The board detects an anomaly on the flow NTC probe. The boiler does not start (1).
The board detects an anomaly on the domestic hot
water NTC probe.
Number of allowed resets already performed.
Water pressure inside the central heating circuit that
is sufficient to guarantee the correct operation of the
boiler is not detected.
This occurs in case of a fault in the flue pressure
switch or the fan.
- 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 pushbutton
panel.
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 (deaerated);
- circulating pump blocked; free the circulating pump.
If during the heating phase, a rise in domestic hot
water temperature occurs, an anomaly is signalled and
heating temperature is reduced to limit the formation
of limescale in the heat exchanger.
This occurs if an incompatible remote control is con-
nected, or if communication between the boiler and
the remote control is lost.
Communication loss on the IMG BUS
protocol
Boiler status / Solution
Press the Reset button (1).
Press the Reset button (1).
The boiler will automatically restart after 30 minutes
without having to be reset. After three interventions
in less than two hours, the boiler has to be manually
rearmed. Restore the normal conditions and press the
button Reset (1).
The boiler does not produce domestic hot water (1).
Attention: the anomaly can be reset
5 times consecutively, after which the function
in inhibited for at least one hour. One attempt is
gained every hour for a maximum of 5 attempts. By
switching the appliance on and off the 5 attempts are
re-acquired.
Check on the boiler pressure gauge (1) that the system
pressure is between 1÷1.2 bar and restore the correct
pressure if necessary.
If normal conditions are restored the boiler restarts
without having to be reset (1).
Press the Reset button (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).
Check that all domestic hot water system cocks are
closed and are not drawing and check also that there
are no leaks in the system. Once good conditions are
restored in the domestic hot water system, the boiler
returns to normal functioning (1)
Disconnect and reconnect the power to the boiler. If
the Remote Control is not detected on re-starting
the boiler will switch to "Summer" local operating
mode. In this case, the controls on the control
panel of the boiler are enabled again (1).
The boiler does not satisfy the room heating requests
(1).