(3)
Diagnosis of defect other than abnormal indication
(a) In case the unit will not operate even turning the operation switch "ON".
– 52 –
Will operation
indication
lamp light?
NO
YES
NO
Refer to page 54,
compressor will not
turn.
Refer to page 54,
condensor fan motor
will not turn.
Refer to page 53,
evaporator fan motor
will not turn.
Controller is defective.
YES
Is fuse broken?
YES
Replace fuse.
NO
YES
NO
• Line is broken between con troller
and relay box, or contact of
connector is defective.
• WB line between ignition
terminal and controller is broken
or contact of connector is
defective.
• Connecting line between fuse (F
22
)
and controller is broken or contact
of connector is defective. (In
caseof motor drive only)
G line is
broken or
contact of
connector is
defective.
NO
YES
Controller is defective.
Unit will not operate with
the operation switch ON.
Note: No.
M
terminal is only
for motor drive.
Is battery
voltage measured
at terminals and
A
,
B
,
C
,
L
and
M
of
controller?
Are No.
K
and
S
terminals of controller
grounded?
Is battery
voltage measured
at terminals and
N
and
V
of
controller?
