22
–
SAFETY/LIMIT THERMOSTAT FAULT
“ALL 07” (fig . 23/6)
Opening the connection to the safety/
limit thermostat turns the boiler off,
while the flame detector waits for it to
close for a minute, keeping the system
on for this time. If the thermostat closes
within one minute, the boiler will resume
normal operation, otherwise the boiler
turns off and the display shows fault ALL
07. Press the control button (
5
3
1
2
4
) (2) to
restart the boiler.
–
PARASITE FLAME FAULT “ALL 08”
(fig . 23/7)
if the flame detector detects a flame even
when no flame should be present, this
means that the detection circuit is faulty.
The boiler turns off and the display shows
fault ALL 08.
–
WATER CIRCULATION FAULT “ALL 09”
(fig . 23/8)
No water is circulating in the primary
system. If the fault occurs at the first re-
quest, the boiler tries to deliver water to
the circuit three times, after which the
boiler turns off and the display shows
fault ALL 09. If the fault occurs during
normal operation, the display immedi-
ately shows fault ALL 09 while continuing
to run the circuit and boiler pumps for 1
minute. This fault occurs when the tem-
perature inside the tank has risen sud-
denly. Check that there is circulation in-
side the boiler and check the pump is
working properly. To quit the fault, press
the control button
5
3
1
2
4
(2). If the fault
recurs, contact your Authorised Techni-
cal Service Centre.
–
SIPHON ANTI-FREEZE SENSOR FAULT
“ALL 10” (fig . 23/9)
When the siphon anti-freeze sensor (SB/
SA) is open or shorted, the boiler loses
part of its anti-freeze functionality and
the display shows fault ALL 10.
–
FLUE GAS SENSOR TRIPPED “ALL 13”
(fig . 23/10)
If the flue gas sensor trips (SF), the boil-
er turns off and the display shows fault
ALL 13. Press the control button
5
3
1
2
4
(2) to restart the boiler.
–
FLUE GAS SENSOR FAULT “ALL 14”
(fig . 23/11)
When the flue gas sensor (SF) is open or
shorted, the boiler turns off and the dis-
play shows fault ALL 14.
Fig. 23/7
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/6
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/9
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/10
Fig. 23/11
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/8
Summary of Contents for MURELLE 110 BOX ErP
Page 29: ...29 5 EXPLODED VIEWS FOR SPARE PARTS...
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