Boiler Ignition; Fault And Anomaly Signals - Immergas HE COMBI INTERNAL Manual

Wall mounted heating only boiler
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2.4 BOILER IGNITION.

Before ignition make sure the central heating
(15) indicates a pressure of 1 - 1.2 bar;
- Open the gas cock to the boiler.
- Turn the main selector switch (12) taking it
to the Domestic Hot Water/Comando Amico
Remoto
(CAR
) (
) or Domestic Hot
V2
V2
Water and Central heating position(
N.B.: once the main switch (12) has been
positioned the green indicator light (1), which
indicates the presence of voltage in the boiler,
will remain on.
During normal boiler functioning the LEDs from
5 to 11 indicate the temperature of the outlet
water of the main heat exchanger.
Attention:
indicates that there is an anomaly present, refer
to the successive paragraph.
Functioning of the boiler in domestic hot water
mode and in central heating mode is indicated
respectively by the switch-on of LED 3 or LED 4.
• Operation with Comando Amico Remoto
(CAR
)(Optional). With selector switch (12)
V2
in position (
) and CAR
the boiler selector switches (13) and (14) are
are set from the control panel of the CAR
Connection to the CAR
is indicated by LEDs
V2
Also in the presence of CAR
remote control
V2
indications of the temperature and any faults
are maintained on the control panel.
• Operation with Comando Amico Remoto
(CAR
). With the selector switch (12) in
V2
position (
) the heating adjustment
selector switch is excluded, the domestic hot
water temperature is adjusted by the selector
switch (13). With the selector switch in position
(
) the heating adjustment selector
switch (14) is used to regulate the temperature
of radiators, while selector (13) continues to be
used for domestic hot water. Turn the selector
switches clockwise to increase the temperature
and anti-clockwise to decrease it.
N.B.: the boiler may start-up automatically if the
anti-freeze function is activated.
With the boiler main switch in stand-by position
(
) the boiler does not produce hot water but
safety functions are guaranteed, such as: pump
anti-block, anti-freeze and three way anti-block.
N.B.: Please check carefully for the selector switch
is set to the correct position when using CAR
Also check correct switch position when using
own room thermostat. Unit will not operate if
not in correct position.

2.5 FAULT AND ANOMALY SIGNALS.

of LED 1.
Fault code
).
No ignition block
Flue pressure
switch fault
pressure
Circulation
Flow probe
fault
Domestic hot water
probe fault
Safety thermostat
block (overheating),
ue thermostat or
V2
control fault
connected,
V2
Contacts resistance
block
.
V2
).
block
Comando Remoto
communication
V2
loss or RS232
Ignition block.
with each demand for room central heating or hot
water production. If this does not occur within
10 seconds, the boiler remains in stand-by for 30
seconds, try again and if the second attempt fails
eliminate the "start-up block" it is necessary to
turn the main switch (12) taking it temporarily to
the Reset position or using the Reset key on the
CAR
V2
in inhibited for at least one hour. One attempt is
gained every hour for a maximum of 5 attempts.
may be necessary to eliminate the "ignition block".
Or in the event the heat exchanger or the trap are
clogged and cannot drain the condensation. If this
.
V@
Hunt Heating technician for assistance.
Fumes pressure switch fault.
intake or exhaust pipes are blocked or in case of
a fan fault. If normal conditions are restored the
boiler restarts without having to be reset. If this
technician for assistance.
to guarantee the correct functioning of the boiler
is not detected. Check that the system pressure
is between 1÷1.2 bar.
/ EXT
water circulating in the primary circuit; the
causes can be:
-
devices are closed on the heating circuit and
LED
Remote
that the system is free of air (deaerated);
display
- circulating pump blocked; free the circulating
pump.
E01
Led 5 (
)
If this phenomenon occurs frequently, contact a
E11
Led 6 (
)
assistance.
Delivery probe fault.
E10
Led 7 (
)
fault on the system NTC delivery probe, the boiler
E27
Led 8 (
)
technician for assistance.
Domestic hot water probe fault.
E05
Led 9 (
)
detects a fault on the DHW NTC probe
of LED 10. In this case, the boiler continues to
E06
Led 10 (
)
produce DHW but not with optimal performance.
Moreover, the anti-freeze function is prevented,
E02
Led 11 ( )
for assistance.
Overheating block. During operation, if a fault
LED 6 (
) and
causes excessive fumes overheating internally, or
E02 + E04
Led 10 (
)
alternating
simultaneous
an over-temperature block is triggered in the
"overheating block" it is necessary to turn the
LED 2 ( ) and
E02 + E20
main switch (12) taking it temporarily to the
Led 11 ( )
alternating
Reset position or using the Reset key on the CAR
simultaneous
If this phenomenon occurs frequently, contact a
LEDs 3 and 4
Contacts resistance block.
alternating
E31
case of faults to the safety thermostat (over-
(
)
boiler does not start. To eliminate "contacts
resistance block" the main selector (12) must
be turned to the Reset position temporarily. If
this phenomenon occurs frequently, contact a
Parasite ame block.
a leak on the detection circuit or anomaly in
the ame control unit.
main selector (12) must be turned to the Reset
position temporarily. If this phenomenon occurs,
assistance.
Loss of remote control communication.
connection to a remote control or if there is a
loss of communication between the boiler and
Comando Amico Remoto
control. Try the connection procedure again by
switch (12) to position (On). If the CAR
not detected on re-starting the boiler will switch
to local operating mode, i.e. using the controls
on the boiler itself. If this phenomenon occurs,
assistance.
Water pressure
15
If the board detects an
is occurs in case of
e boiler does not
is occurs in the case of an incompatible
(CAR
V2
If the P.C.B.
.
V2
) remote
V2
is still
V2

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