Sharp AE-Z35PR, Service Manual

Page: 44 / 64

3-21
AY-ZP35PR
Indoor unit
operates.
Outdoor unit
does not
operate. Lighting
or OFF
Timer (Orange) 17 0 Wiring
between
units Serial open-cir-
cuit
(1) Check the wires
between units.
(1) Connect stable
power supply.
Correct the wiring.
Operation (Green)
Plasmacluster
(Blue) (2) Check voltage
between N and 1 the
indoor/outdoor unit
terminal boards.
(2) Replace the out-
door unit control
PWB assembly.
(3) Check the outdoor
unit fuse.
(3) Replace the fuse/
outdoor unit con-
trol PWB assem-
bly.
(4) Check 15-V,13-V
and 5-V voltages on
the PWB.
Check resistance
between IPM termi-
nals.
(4) Replace the out-
door unit control
PWB assembly.
(5) Check pins No.5 and
8 of connector CN3
of the outdoor unit
fan motor for short-
circuit.
(5) Replace the out-
door unit fan
motor.
(6) No abnormality
found in above
inspections (1)
through (5).
(6) Replace the out-
door unit control
PWB board.
Indoor unit
operates.
Outdoor unit
does not
operate. Lighting
or OFF
Timer (Orange) 18 0 Wiring
between
units
Serial short-cir-
cuit
(1) Check the wiring
between units.
(1) Correct the wiring.
Operation (Green)
Plasmacluster
(Blue)
Indoor and
outdoor units
do not oper-
ate. Lighting
or OFF
Timer (Orange) 1 Serial erroneous
wiring (1) Check the wiring
between units.
(1) Correct the wiring.
Operation (Green)
Plasmacluster
(Blue)
Indoor and
outdoor units
do not oper-
ate. Normal
blinking
or OFF
Timer (Orange) 19 0 Indoor unit
fan Indoor unit fan
error (1) Check the indoor fan
motor for proper
rotating operation.
(Check fan lock.)
(1) Replace the indoor
fan motor.
Operation (Green)
Plasmacluster
(Blue)
(2) Check the lead wire
of the indoor fan
motor for open-cir-
cuit.
(2) Replace the indoor
fan motor.
(3) Check connector of
the indoor unit fan
motor for secure
installation.
(3) Correct the instal-
lation of the indoor
fan motor connec-
tor.
(4) No abnormality
found in above
inspections (1)
through (3).
(4) Replace the indoor
unit control PWB.
Indoor and
outdoor units
do not oper-
ate. Normal
blinking
or OFF
Timer (Orange) 20 0 Indoor unit
control PWB EEPROM data
error (1) (EEPROM read data
error)
(1) Replace the indoor
unit control PWB.
Operation (Green)
Plasmacluster
(Blue)
Problem
symptom
Outdoor
unit indi-
cation
(LED1)
Indoor unit Malfunc-
tion No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub