Sime Murelle 25 OF Manual Download Page 26

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4.5

FUNCTIONING ANOMALIES

When. there. is. a. functioning. anomaly,. an.
alarm.appears.on.the.display.and the blue
luminous bar becomes red.
Descriptions.of.the.anomalies.with.relative.
alarms.and.solutions.are.given.below:

–. FUMES DISCHARGE ANOMALY ALARM

01 (fig. 24)

. OPEN.COMBUSTION.CHAMBER
. (OF):.
. The. display. shows. “ALL. 01”.. The. fumes.

thermostat. has. intervened.. The. boiler.
stops.for.an.enforced.period.of.10.minu-
tes.. At. the. end. of. this. period,. the. boiler.
re-attempts.ignition..If.the.anomaly.is.re-
peated. three. times. in. 24. hours,. the.
symbol.RESET.starts.flashing..Press.the.
key

of. the. controls. (2). to. start. up.

the.boiler.again.

.
.

SEALED.COMBUSTION.CHAMBER

.. (BF/BFT):

. The.fumes.thermostat.has.intervened..If.

the. condition. causing. the. problem. per-
sists. for. two. minutes,. the. boiler. stops.
for.an.enforced.period.of.thirty.minutes..
At. the. end. of. this. period,. the. boiler. re-
attempts.ignition..

–. LOW WATER PRESSURE ANOMALY

ALARM 02 (fig. 24/a)

. If.the.pressure.detected.by.the.transdu-

cer.is.lower.than.0.5.bar,.the.boiler.stops.
and. the. display. shows. the. . alarm. “ALL.
02”..

. Bring.the.pressure.back.to.normal.by.ac-

ting.on.the.loading.knob..Lower.the.knob.
and. turn. it. anti-clockwise. to. open. until.
the. pressure. indicated. by. the. display. is.
between.1.and.1.5.bars.

WHEN. FILLING. HAS. BEEN. COMPLE-
TED,. CLOSE. THE. KNOB. BY. TURNING. IT.
CLOCKWISE.

If.the.load.procedure.has.to.be.repeated.
several.times,.it.is.advisable.to.check.that.

the. seal

of. the. heating. circuit. is. intact.

(check.that.there.are.no.leaks).

–. HIGH WATER PRESSURE ANOMALY

ALARM 03 (fig. 24/b)

. If.the.pressure.detected.by.the.transdu-

cer.is.more.than.2.8.bar,.the.boiler.stops.
and.the.display.shows.anomaly.“ALL.03”.

–. D.H.W. SENSOR ANOMALY ALARM 04

(fig. 24/c)

If.the.D.H.W..sensor.(SS).is.open.or.short.

circuited,.the.boiler.will.function.but.will.
not.modulate.the.power.for.sanitary.wa-
ter..The.display.will.show.the.alarm.“ALL.
04”.

–. HEATING SENSOR ANOMALY ALARM 05

(fig. 24/d)

If.the.heating.sensor.(SM).is.open.or.short.
circuited,.the.boiler.will.not.function.and.
the.display.will.show.the.alarm.“ALL.05”.

–. FLAME BLOCK ALARM 06 (fig. 24/e)
. If.the.flame.control.has.not.detected.the.

presence. of. the. flame. after. a. complete.
ignition.sequence,.or.for.any.other.reason.
the.card.cannot.“see”.the.flame,.the.boi-
ler.will.stop.and.the.display.will.show.the.
alarm.“ALL.06”..

. Press.the.key

of.the.controls.(2).to.

start.up.the.boiler.again.

–. SAFETY THERMOSTAT ANOMALY ALARM

07 (fig. 24/f)

If.the.connection.with.the.safety.thermo-
stat.is.interrupted,.the.boiler.will

stop;.the.

flame. control. will. remain. waiting. to. be.
switched.off.for.one.minute,.keeping.the.
system.pump.on.for.that.period..

. If,.the.thermostat.connection.is.restored.

within.the.minute,.the.boiler.will.start.up.
working.normally.again,.otherwise.it.will.
stop.and.the.display.will.show.the.alarm.

Fig..24/b

Apre