Hitachi RAS-08PH1 - General Troubleshooting; Precautions for Checking

TROUBLE SHOOTING
PRECAUTIONS FOR CHECKING
WARNING
WARNING
Always keep your hands
and metallic things away
from the cabinet.
DANGER!
Don
the ground
line.
When using an
oscilloscope, never
ground it.
Don
voltage as noted in
the figure above may
apply to the
oscilloscope.
Remember that
voltage of 175 V is
applied to the 0V line
on the P.W.B. or the
like as shown in the
right diagram.
Voltage at point A
Ground voltage
350V
Point B (0V line)
't forget that high
't install
RAC-08PH1,RAC-10PH1, RAC-14PH1
82
Indoor
Controller
Outdoor
Controller
Point
375 F
.M
.
P.I
Compressor
motor
Point
line
Control
P.W.B.
Main
P.W.B.
Power
L
N