Hitachi FSG Series Service Manual page 12

1
TROUBLESHOOTING
4
n DSW7: Compressor Emergency Operation
Setting is not required. All compressor are running except
compressor selected
ΠBefore shipment
ΠExcept Compressor No. 1
ΠExcept Compressor No. 2
ΠExcept Compressor No. 3
ΠExcept Compressor No. 4
n DSW8: Test Operation & Service Setting II
No setting is required.
ΠBefore shipment
ΠExchanged Compressor Operation
n DSW9: Optional Functions Setting II
No setting is required.
ΠBefore shipment
n DSW10: Transmitting Setting
Setting is required for cancellation of end resistance and
when fuse is melted.
ΠBefore shipment, No. 1 pin of DSW10 is
21
2))
set at ON side
ΠIn case that Outdoor Unit quantity in the
21
same H-Link is 2 or more, set No. 1 pin of
2))
DSW10 at the OFF side from 2
21 only one Outdoor Unit is used, no setting is
2))
required.
ΠIn case of applying high voltage to the
21
terminal 1, 2 of TB1, the fuse on the PCB
2))
is cut.
ΠIn such a case, first connect the wiring to
21
2))
TB1 and then turn on #2
n Push switch
Manual defrosting
21
for Check
2))
.
21
2))
21
2))
21
2))
21
nd
Unit. If
2))
21
2))
PSW1
PSW2
PSW3