Sharp AY-ZP35PR Service Manual page 44

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