Sharp AE-X12FR Service Manual page 10

Status of Indication Malfunction
indoor/ by LED1 No. dis-
outdoor on out- played on
units door unit main unit
*2 display sec-
tion *1
Main
cate-
gory
Indoor/ 11 11
outdoor times
units in
complete
shutdown
Indoor/ 13 13
outdoor times
units in
complete
shutdown
Indoor/ 14 14
outdoor times
units in
complete
shutdown
Indoor/
outdoor
units in
operation
Indoor 17
unit in
operation
Outdoor
unit in
complete
shutdown
18
Content of diagnosis
Sub- Main category Sub-category
cate-
gory
-0 Outdoor unit DC Outdoor unit DC fan
fan rotation error
-0 DC compressor Compressor startup
error
-1 Compressor rota-
tion error
(120° energizing
error)
-0 Outdoor unit PAM over voltage
PAM error
Compressor rota-
tion error
-1 PAM clock error
-0 Wires between Serial open-circuit
units
Outdoor unit does
not turn on due to
erroneous wiring
-0 Serial short-circuit
-1 Serial erroneous wir-
ing
Inspection location/method
(1) Check connector CN3 of
the outdoor unit DC fan
motor for secure installa-
tion.
(2) Check the outdoor unit fan
motor for proper rotation.
(3) Check fuse FU3.
(4) Outdoor unit control PWB
(1) Check the colors (red,
white, orange) of the com-
pressor cords for proper
connection. (PWB side,
compressor side)
(2) Check if the IPM terminal
resistance values are uni-
form.
(3) No abnormality found in
above inspections (1) and
(2).
(4) No abnormality found in
above inspections (1)
through (3).
(1) Check the AC power sup-
ply voltage for fluctuation.
(2) No abnormality found in
above inspection (1).
(1) Check the PAM clock for
proper input.
(1) Check the wires between
units.
(2) Check voltage between
Nos. 1 and 2 on the
indoor/outdoor unit termi-
nal boards.
(1) Check the wires between
units.
(2) Check the outdoor unit
fuse.
(3) Check 15-V, 13-V and 5-V
voltages on the PWB.
Check resistance between
IPM terminals.
(4) Check pins No. 5 and 7 of
connector CN3 of the out-
door unit fan motor for
short-circuit.
(5) Outdoor unit control PCB
(1) Check the wires between
units.
(1) Check the wires between
units.
3 – 16
AYXP7FR
Remedy
(1) Correct the installa-
tion.
(2) Replace the outdoor
unit fan motor.
(3) Replace the outdoor
unit control PWB
assembly.
(4) Replace the outdoor
unit control PWB
assembly.
(1) Correct the installa-
tion.
(U: Red, V: White, W:
Orange)
(2) Replace the outdoor
unit control PWB
assembly.
(3) Replace the outdoor
unit control PWB
assembly.
(4) Replace the compres-
sor.
(1) Connect stable power
supply.
(2) Replace the outdoor
unit control PWB
assembly.
(1) Replace the outdoor
unit control PWB
assembly.
(1) Connect stable power
supply.
(2) Replace the outdoor
unit control PCB
assembly.
(1) Correct the wiring.
(2) Replace the fuse/out-
door unit control PCB
assembly.
(3) Replace the outdoor
unit control PCB
assembly.
(4) Replace the outdoor
unit fan motor.
(5) Replace the outdoor
unit control PCB
board.
(1) Correct the wiring.
(1) Correct the wiring.