24
–
HEATING RETURN SENSOR FAULT “ALL
30” (fig . 23/24)
When the heating return sensor (SR) is
open or shorted, the display shows fault
ALL 30. The boiler will continue its nor-
mal operation during this fault.
–
CASCADE DELIVERY SENSOR FAULT
“ALL 31” (fig . 23/25)
When the cascade delivery sensor (SMC)
is open or shorted, the display shows
fault ALL 31. The boiler will continue its
normal operation during this fault.
–
THREE ZONE CONFIGURATION FAULT
“ALL 32” (fig . 23/26)
When insufficient RS-485 boards are
connected or at least one of them is not
a mixed zone board, the boiler turns off
and the display shows fault ALL 32. The
boiler starts again when the 3 zone sys-
tem is configured properly.
–
RS-485 MODBUS MODE COMMUNICA-
TIONS FAULT “ALL 33” (fig . 23/27)
When PAR 16 is not set to “- -” and
there are no communications between
the boiler board and the RS-485 board
in MODBUS mode for at least four min-
utes, the boiler shuts down and the
display shows fault ALL 33.
The boiler starts again when commu-
nications are restored or when PAR 16
is set to “- -”.
–
RS-485 CASCADE MODE COMMUNICA-
TIONS FAULT “ALL 34” (fig . 23/28)
When PAR 15 is not set to “- -” and there
are no communications between the
boiler board and the RS-485 board in
CASCADE mode, the boiler shuts down
and the display shows fault ALL 34. The
boiler starts again when communica-
tions are restored or when PAR 15 is set
to “- -”.
–
COMMUNICATIONS BETWEEN RS-485
BOARDS FAULT “ALL 35” (fig . 23/29)
When PAR 15 is not set to “- -” and there
are no communications between at least
two RS-485 boards, the boiler shuts
down and the display shows fault ALL 35.
The boiler starts again when communi-
cations are restored or when PAR 15 is
set to “- -”.
WARNING: If connected in sequence/cas-
cade, the display of the SIME HOME re-
mote control shows fault codes 70 and 71:
- ALARM 70
When a malfunction blocks operation of
the cascade (cascade delivery sensor
ALL 31), the display of the SIME HOME
remote control shows alarm 70 . Check
the problem with the cascade .
- ALARM 71
When one of the modules malfunctions
and the other modules continue running
(to the extent permitted), the display of
the SIME HOME remote control shows
alarm 71 . Check the problem with 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
Summary of Contents for MURELLE 110 BOX ErP
Page 29: ...29 5 EXPLODED VIEWS FOR SPARE PARTS...
Page 30: ...30...
