13
INS
TALL
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R
US
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MAINTEN
AN
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2.5 USING THE BOILER.
Before ignition, make sure the heating system
is filled with water and that the manometer (7)
indicates a pressure of 1 ÷ 1.2 bar.
- Open the gas cock upstream from the boiler.
- Press the button (2) until the display switches
on, after which press the button in sequence
(2) and take the boiler to the summer (
)
or winter (
) position.
•
Summer
(
)
:
in this mode the boiler fun-
ctions only to produce the DHW, the tempera-
ture is set via the buttons (3-4) and the relative
temperature is shown on the display via the
indicator (16).
• Winter
(
)
:
in this mode the boiler functions
both for producing domestic hot water and
heating the environment. The temperature of
the DHW is always regulated via buttons (3-4),
the heating temperature is regulated via buttons
(5-6) and the relative temperature is shown on
the display via the indicator (16).
From this moment the boiler functions auto-
matically. With no demand for heat (heating
or domestic hot water production) the boiler
goes to “standby” function, equivalent to the
boiler being powered without presence of flame.
Each time the burner ignites, the relative flame
present symbol is displayed (10) with relative
power scale.
•
Operation with Comando Amico Remoto
remote control
V2
(CAR
V2
) (Optional)
. If the
CAR
V2
is connected, the (
) symbol will
appear on the display. The boiler regulation pa-
rameters can be set via the CAR
V2
control panel
and the reset button (1) remains active on the
boiler control panel, along with the switch-off
button (2) (“off” mode only) and the display
where the functioning state is shown.
Important:
if the boiler is put into “off” mode
on the CAR
V2
the “CON” connection error
symbol will appear on the CAR. The CAR
V2
is
however powered constantly so as not to loose
memorised programs.
•
Functioning with optional external probe
(
)
.
In the case of a system with optional
external probe, the boiler flow temperature for
room central heating is managed by the exter-
nal probe depending on the external tempera-
ture measured (Par. 1.6). The flow temperature
can be modified by selecting the functioning
curve via buttons (5 and 6), selecting a value
from “0 to 9” (Fig. 1-5).
With external probe present, the relative
symbol will appear on the display (12). In the
central heating phase, if the temperature of the
water contained in the system is sufficient to
heat the radiators, the boiler can only function
with the activation of the pump.
•
“Stand-by” mode.
Press button (2) in suc-
cession until the (
) symbol appears. The
boiler remains active from this moment and the
anti-freeze function, pump anti-block function
and 3-way and signalling of any anomalies is
guaranteed.
N.B.:
in these conditions the boiler is conside-
red still live.
•
“Off” mode.
The safety functions are not
guaranteed in this mode.
N.B.:
in these conditions the boiler is consi-
dered still live even if there are no functions
active.
•
Display functioning.
The display lights up
during the use of the control panel, after 15 se-
conds inactivity, the brightness drops until just
the active symbols are displayed. The lighting
mode can be varied via parameter P2 in the
circuit board customisation menu.
2.6 TROUBLESHOOTING.
The boiler signals out anomalies by flashing on
the display and relative error codes, listed on the
table, are displayed. On any remote controls, the
error code will be displayed using a numerical
code preceded or followed by the letter E (e.g.
CAR
V2
= Exx).
Code dis-
played
(flashing)
Anomaly signalled
Cause
Boiler status / Solution
01
No ignition block:
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
block (over-temper-
ature)
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
After an appropriate cooling press the Reset
button (1).
03
Flue safety thermostat
block
During normal operation, if a fault causes excessive flue gas overheat-
ing, the boiler blocks
After an appropriate cooling press the Reset
button (1)
The boiler will automatically restart after 30
minutes if normal conditions resume with-
out having to be reset. After three trippings
of the flue safety thermostat in less than two
hours the boiler requires a manual reset to
restart; press the Reset button (1).
04
General boiler board
anomaly
The P.C.B. detects a malfunction of the safety thermostat, of the flue
pressure switch or of the system pressure switch.
Press the Reset button (1).
05
Flow probe anomaly
The board detects an anomaly on the flow NTC probe.
The boiler does not start (1).
06
Domestic hot water
probe anomaly
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 reset
Number of allowed resets that have already performed.
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 again, the 5 attempts are re-acquired.
10
Insufficient system
pressure
Insufficient water pressure inside the central heating circuit is detected
to guarantee correct boiler operation.
Check on the boiler pressure gauge (1) 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 reset. Check
that the boiler is configured correctly (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)
(1) If the shutdown or fault persists, contact an authorised company (e.g. Technical After-Sales Service).
Summary of Contents for MINI NIKE 24 4 ERP
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