York HIC4008B21S - Sound Data

24
P5417054
8. All electrical work should be performed in strict accordance with electrical schematics in the
"Installation and Maintenance Manual".
9. If Power Supply Voltage (208V/230V) is introduced into the Communication Line:
If 208V/230V are applied to the communication line at (Terminals 1 and 2 of TB2) by mistake, the fuse
on the PCB for the communication line will blow. In this case, perform the recovery work as shown in
the diagrams below.
a. Reconnect the wirings correctly.
b. Set the No.1 pin at DSW7 (on the PCB) to ON.
Upon PCB recovery after the fuse has been replaced, if 208V / 230V is reintroduced into the
communication line, the PCB will be seriously damaged and will not recover.
L1
R
L2
A
C 208V/230V
Incorrect Wiring Reconnect wirings correctly.
5V
AB12
S
L1
R
L2
AC 208V/230V
5V
AB12
S
ON
OFF
DSW7
Set No.1 Pin
at ON side.
PCB
12
c. Wired Controller connections between different refrigerant cycles
a. Wired Controllers at each unit for an individual operation setting
b. Single Wired Controller for an individual operation setting
Outdoor Unit
A B
Outdoor Unit
Indoor UnitIndoor UnitIndoor Unit Indoor Unit
A B
A BA B
Individual
Simultaneous
(Thermo ON / OFF individually)
Individual
Wired
Controller
Wired
Controller
Wired
Controller
Indoor Unit Indoor Unit
A B
Outdoor Unit
A B
Wired
Controller
Wired
Controller
Outdoor Unit
Indoor Unit
A B
Communication cables
for the wired controller
are necessary.
Indoor Unit
A B
Wired
Controller
10. Wired Controller Connections