boiler. functional. excluding. the. fun-
ction.ZONE.MIX/INSOL..
–. HEATING RETURN PROBE ANOMALY
"ALL 30" (fig. 23/24)
.
When. the. heating. return. probe. (SR).
is.open.or.short-circuited,.the.display.
shows. anomaly. ALL. 30.. During. such.
anomaly. the. boiler. continues. normal.
functioning.
–. CASCADE DELIVERY SENSOR ANO-
MALY "ALL 31" (fig. 23/25)
Apre
. When. the. cascade. delivery. sensor.
(SMC).is.open.or.shorted,.ALL.31.shall.
be.displayed..
. During. such. anomaly,. the. boiler. will.
continue.to.operate.normally.
2
–. THREE-ZONE SYSTEM CONFIGURA-
TION ANOMALY "ALL 32" (fig. 23/26)
. When.the.boards.connected.to.the.RS-
485.are.not.enough.and/or.at.least.one.
of.them.it.is.not.mixing.zone.board,.the.
boiler.stops.and.anomaly.ALL.32.is.di-
splayed.. The. boiler. restarts. when. the.
boiler. three-zone. system. configura-
Apre
tion.is.activated
2
–. RS-485
BOARD
ANOMALY IN MODBUS MODE "ALL 33"
(fig. 23/27)
2
Circuito
. When.PAR.16.is.different.from."-.-"and.
riscaldamento 2
there. is. no. communication. between.
the. boiler. board. and. the. RS-485. bo-
ard.in.MODBUS.mode.for.at.least.four.
minutes,.the.boiler.stops.and.anomaly.
Circuito
riscaldamento 3
(impianto tre
zone)
2
68
ALL.33.is.displayed..
. The.boiler.restarts.when.communica-
tion.is.restored.or.when.PAR.16.=."-.-".
is.set.
–. RS-485
ANOMALY IN CASCADE MODE "ALL
34" (fig. 23/28)
. When. PAR. 15. is. different. from. "-. -".
and.there.is.no.communication.betwe-
en.the.boiler.board.and.the.RS-485.bo-
ard.in.CASCADE.mode,.the.boiler.stops.
and.anomaly.ALL.34.is.displayed..
. The.boiler.restarts.when.communica-
tion.is.restored.or.when.PAR.15.=."-.-".
is.set.
Fig..23/24
–. RS-485 AND RS-485 COMMUNICA-
TION ANOMALY "ALL 35" (fig. 23/29)
.
When. PAR. 15. is. different. from. "-. -".
and.there.is.no.communication.betwe-
Circuito
riscaldamento 2
en. the. two. RS-485. boards,. the. boiler.
stops.and.anomaly.ALL.35.is.displayed..
The.boiler.restarts.when.communica-
tion.is.restored.or.when.PAR.15.=."-.-".
Fig..23/25
Circuito
is.set.
riscaldamento 3
(impianto tre
zone)
CAUTION: In the event of sequence/ca-
scade connection, error codes 70 and 71
will appear on the SIME HOME remote
control display:
- ALARM 70
When an anomaly affects cascade
operation (cascade delivery sensor
ALL 31), SIME HOME remote control
Fig..23/26
display will show alarm 70. Verify the
anomaly in the cascade.
- ALARM 71
COMMUNICATION
When an anomaly occurs in one of the
modules and the others keep ope-
rating to the extent permitted, the
2
SIME HOME remote control display
will show alarm 71. Verify the ano-
maly in the cascade.
Fig..23/27
BOARD
COMMUNICATION
Fig..23/28
Fig..23/29
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)