Immergas Maior Eolo 24 4E - 2.9 Svuotamento dell’impianto.; 2.10 Protezione antigelo.; 2.11 Pulizia del rivestimento.; 2.12 Disattivazione definitiva.

22
2-2
INSTALLERUSER
MAINTENANCE TECHNICIAN
Key:
1 - Filling valve
2 - Draining valve
Bottom view.
Flue gas pressure switch failure. It occurs in the
case of an error on the circuit board that gives
consent for fan start-up incorrectly or in the
case of ue-gas pressure switch fault (code11).
If normal conditions are restored the boiler
restarts without having to be reset. If this ano-
maly persists, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
Conguration error. If the board detects an
anomaly or incongruency on the electric wiring,
the boiler will not start. If normal conditions are
restored the boiler restarts without having to be
reset. If this anomaly persists, contact a qualied
technician for assistance (e.g. Immergas Aer-
Sales Technical Assistance Service).
Parasite ame. is occurs in case of a leak on
the detection circuit or anomaly in the ame
control unit. (code 20), try to reset the boiler.
If the anomaly continues contact a qualified
technician (e.g. Immergas Aer-Sales Technical
Assistance Service).
Push button control panel anomaly. is occurs
when the circuit board detects an anomaly on the
push button control panel. If normal conditions
are restored the boiler restarts without having
to be reset. If this anomaly persists, contact a
qualied technician for assistance (e.g. Immergas
Aer-Sales Technical Assistance Service).
Insucient circulation. is occurs if the boiler
overheats due to insucient water circulating in
the primary circuit (code 27); the causes can be:
- low circulation; check that no interception
devices are closed on the central heating circuit
and that the system is free of air (deaerated);
- pump blocked; free the pump.
If this phenomenon occurs frequently, contact a
qualied technician for assistance (e.g. Immergas
Aer-Sales Technical Assistance Service).
Loss of Remote Control communication.
is occurs 1 minute aer communication loss
between the boiler and the remote control (code
31). To reset the error code, remove and re-apply
voltage to the boiler. If this phenomenon occurs
frequently, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
Low power supply voltage. This occurs when
the power supply voltage is lower than the
allowed limits for the correct functioning of
the boiler. If normal conditions are restored,
the boiler re-starts without having to be reset.
If this phenomenon occurs frequently, con-
tact a qualified technician for assistance (e.g.
Immergas After-Sales Technical Assistance
Service).
Loss of flame signal. 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 restored, the boiler does not have to be
reset. If this phenomenon occurs frequently,
contact a qualified technician for assistance
(e.g. Immergas After-Sales Technical Assi-
stance Service).
Block due to loss of continuous flame signal
This occurs if the “Flame signal loss” error
occurs 6 times consecutively in 8.5 minutes
(38)”. To eliminate the block, the Reset button
(5) must be pressed. If this phenomenon occurs
frequently, contact a qualified technician for
assistance (e.g. Immergas After-Sales Technical
Assistance Service).
Block for maximum time, gas valve opening.
is occurs if the gas valve remains open for
a time longer than that envisioned for normal
functioning, without the boiler switching on.
To eliminate the block, the Reset button (5)
must be pressed. If this phenomenon occurs
frequently, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
2.6 BOILER SHUTDOWN
For complete boiler switch-o, press the “o”
button, disconnect the onmipolar switch outside
of the boiler and close the gas cock upstream
from the appliance. Never leave the boiler
switched on if le unused for prolonged periods.
2.7 RESTORE CENTRAL HEATING
SYSTEM PRESSURE.
Periodically check the system water pressure.
e boiler pressure gauge should read a pressure
between 1 and 1.2 bar.
If the pressure is below 1 bar (with the circuit cool)
restore normal pressure via the cock located in the
lower part of the boiler (Fig. 2-2).
N.B.: close the cock aer the operation.
If pressure values reach around 3 bar the safety
valve may be activated.
In this case contact a professional technician
for assistance.
In the event of frequent pressure drops, contact
qualified staff for assistance to eliminate the
possible system leakage.
2.8 SYSTEM DRAINING.
To drain the boiler, use the special draining
valve (Fig. 2-2)
Before draining, ensure that the lling valve is
closed.
2.9 ANTIFREEZE PROTECTION.
The boiler has an anti-freeze function that
switches on automatically when the temperature
falls below 4°C (standard protection to minimum
temperature of -5°C). In order to guarantee the
integrity of the appliance and the domestic hot
water heating system in zones where the tem-
perature falls below zero, we recommend the
central heating system is protected using anti-
freeze liquid and installation of the Immergas
Anti-freeze Kit in the boiler (Par. 1.3). In the
case of prolonged inactivity (second case), we
also recommend that:
- disconnect the electric power supply;
- the central heating circuit and boiler domestic
hot water circuit must be drained. In systems
that are drained frequently, lling must be car-
ried out with suitably treated water to eliminate
hardness that can cause lime-scale.
2.10 CASE CLEANING.
Use damp cloths and neutral detergent to clean
the boiler casing. Never use abrasive or powder
detergents.
2.11 DECOMMISSIONING.
In the event of permanent shutdown of the boiler,
contact professional sta for the procedures and
ensure that the electrical, water and gas supply
lines are shut o and disconnected.