84
MIX/SOLAR.
–
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 ANOMALY
“ALL 31” (fig. 23/25)
When the cascade delivery sensor (SMC)
is open or shorted, ALL 31 shall be di-
splayed.
During such anomaly, the boiler will con-
tinue to operate normally.
–
THREE-ZONE SYSTEM CONFIGURATION
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 configuration
is activated
–
RS-485 BOARD COMMUNICATION ANO-
MALY IN MODBUS MODE “ALL 33” (fig.
23/27)
When PAR 16 is different from “- -”and
there is no communication between the
boiler board and the RS-485 board in
MODBUS mode for at least four minutes,
the boiler stops and anomaly ALL 33 is
displayed.
The boiler restarts when communication
is restored or when PAR 16 = “- -” is set.
–
RS-485 BOARD COMMUNICATION ANO-
MALY IN CASCADE MODE “ALL 34” (fig.
23/28)
When PAR 15 is different from “- -” and
there is no communication between the
boiler board and the RS-485 board in CA-
SCADE mode, the boiler stops and ano-
maly ALL 34 is displayed.
The boiler restarts when communication
is restored or when PAR 15 = “- -” is set.
–
RS-485 AND RS-485 COMMUNICATION
ANOMALY “ALL 35” (fig. 23/29)
When PAR 15 is different from “- -” and
there is no communication between the
two RS-485 boards, the boiler stops and
anomaly ALL 35 is displayed. The boiler
restarts when communication is resto-
red or when PAR 15 = “- -” is set.
CAUTION: In the event of sequence/casca-
de connection, error codes 70 and 71 will
appear on the SIME HOME remote control
display:
- ALARM 70
When an anomaly affects cascade ope-
ration (cascade delivery sensor ALL
31), SIME HOME remote control display
will show alarm 70. Verify the anomaly
in the cascade.
- ALARM 71
When an anomaly occurs in one of the
modules and the others keep operating
to the extent permitted, the SIME HOME
remote control display will show alarm
71. Verify the anomaly in the cascade.
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/29
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/24
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/25
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/27
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/28
Apre
2
2
2
Circuito
riscaldamento 2
Circuito
riscaldamento 3
(impianto tre
zone)
Fig. 23/26
