Hitachi RPC-3.0FSN3 - Page 36

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P5416543
(10) In Case that Power Source (220V / 240V) Is
Applied to Control Line
If 220V / 240V is applied to the control line
(Terminal 1 and 2 of TB2) due to mistake,
the fuse on the PCB for the control line will
blow out. In this case, perform the recovery
work as shown in the below.
(a) Reconnect the wirings correctly.
(b) Set No.1 pin of DSW7 (on PCB) at ON
side.
PCB is recovered from the fuse blowing out.
However, if 220V / 240V is applied to the
control line again, PCB will break and not be
able to recover.
(11) Remote Control Switch Connection
(a) Installing Remote Control Switch to each
Unit with Individual Operation Setting
(b) Installing One Remote Control Switch with
Individual Operation Setting
(c) Simultaneous Operation
(The indoor unit is H-LINK II model.)
(d) Connecting Remote Control Switch in
Case of Connecting between Refrigerant
Cycles
T
This indoor unit is adopted four (4) steps of fan
speed (HIGH 2, HIGH, MED and LOW). When
installing this indoor unit with three (3) steps
of fan speed type, connect the remote control
switch to four (4) steps of fan speed type. If not,
“HIGH 2” will not be indicated and can not be
selected.
l
The simultaneous
operation is available
up to 4 indoor units.
(9) The wiring work for the indoor unit should be
performed according to the electrical wiring
diagram and “Installation & Maintenance
Manual” of the outdoor unit.
l
For UTOPIA Series
l
For SET-FREE Series
(a) Wired Remote Control Switches to each
Unit for Individual Operation Setting
(b) One Remote Control Switch
for Individual Operation Setting
L1
R
N
A
C 220V/240V
Incorrect Wiring
Reconnect wirings correctly.
5V
AB12
S
L1
R
N
A
C 220V/240V
5V
AB12
S
ON
OFF
DSW7
Set No.1 Pin
at ON side.
PCB
12
Indoor Unit Indoor Unit
Remote
Control
Switch
A B
Outdoor Unit
Remote
Control
Switch
A B
Outdoor Unit
Indoor Unit
A B
Remote
Control
Switch
The transition wiring
for the remote control
switch is necessary.
Indoor Unit
A B
Outdoor Unit
Indoor Unit
A B
Remote
Control
Switch
A B
Indoor Unit
Outdoor Unit
A B
Outdoor Unit
Indoor UnitIndoor UnitIndoor Unit Indoor Unit
Remote Control
Switch
A B
A BA B
Individual
Simultaneous
(Thermo ON / OFF individually)
Individual
Remote Control
Switch
Remote Control
Switch
Indoor Unit Indoor Unit
Remote
Control
Switch
A B
Outdoor Unit
Remote
Control
Switch
A B
Outdoor Unit
Indoor Unit
A B
Remote
Control
Switch
The transition wiring
for the remote control
switch is necessary.
Indoor Unit
A B
ON
OFF
DSW6
Set No.1 Pin
at OFF side.
PCB1
12