Hitachi RAF-35RPA RAF35RPA User Manual
Product codes
RAF35RPA
14-5
14.1.5 MULTIZONE RAM-130NP6A
Warning
Remember that the 0V line is biased at 162V in reference to
the ground level. Also note that it takes about 10 minutes until
the voltage fall after the power switch is turned OFF.
the ground level. Also note that it takes about 10 minutes until
the voltage fall after the power switch is turned OFF.
Warning
When using an oscilloscope, never ground it. Don’t forget that
high voltage as noted in the left figure may apply to the
oscilloscope.
high voltage as noted in the left figure may apply to the
oscilloscope.
14.1.6 MONO SPLIT RAK-18/25/35PSA / RAC-18/25/35WSA , RAK-18/25/35PSAN / RAC-18/25/35WSAN , RAK-
18/25/35PSPA / RAC-18/25/35WSPA
Warning
Remember that the 0V line on the outdoor electrical parts and the
primary lower circuit of the indoor electrical parts have voltage to
ground.
primary lower circuit of the indoor electrical parts have voltage to
ground.
Warning
When using an oscilloscope, never ground it. Don’t forget that
high voltage as noted in the left figure may apply to the
oscilloscope.
high voltage as noted in the left figure may apply to the
oscilloscope.
Outdoor electrical installation
Outdoor unit
PWB
Do not under any
circumstances get your
hand or metal part into
contact with the cabinet
Danger!!
Do not install
a
grounding
Indoor Fan Motor
Two way valve coil
Control Circuit
Power Supply
P
ow
e
r
C
ir
c
u
it
.
Power source
System power module
Control
P.W.B
P.W.B
MAIN
P.W.B
P.W.B
N
L
D
C
DC35V
0V
Compressor
motor
motor
IPM
A
C
T M
odul
e
ⓐ
ⓑ
0V
Across ⓐ–ⓑ (0V line) approx 360V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
Across ⓐ–ground approx 155~170V
Across ⓑ (0V line)-ground approx 155~170V
(B)
(A)
Control Circuit
P
ow
er
C
ir
c
ui
t.
Indoor
electrical
parts
electrical
parts
Grounding
Compressor
motor
motor
Relay