Hitachi RAK-18PSPA - Trouble Shooting

7528%/(6+227,1*
02'(/
RAC-18/ 25/ 35WSPA

WARNING
WARNING
Always keep your hands
and metallic things away
from the cabinet.
DANGER!
Don't install
the ground
line.
When using an
oscilloscope, never
ground it.
Don't forget that high
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)
Indoor
Controller
Outdoor
Controller
Point
400
4
F
.M
.P
.I
Compressor
motor
Point
line
Control
P.W.B.
Main
P.W.B.
Power
PRECAUTIONS FOR CHECKING