Sharp AY-XPC07PU, Service Manual

Page: 17 / 38

AY-XPC12PU
3-4
Problem
symptom
Outdoor
unit
indication
(LED1)
Indoor unit
Malfunction
No.*
Content of diagnosis Check point Action
o
Lamp Main Sub Main Sub
Indoor and
outdoor
units do not
operate. 10-time O O O O O Timer (Orange) 10 2 EEPROM
error EEPROM (outdoor)
data error - Replace the outdoor
unit control PWB
assembly.
O O Operation (Green)
O Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate. 11-time O O O O O Timer (Orange) 11 0 Outdoor unit
DC fan Outdoor unit DC fan
rotation error 1) Check connector CN3
of the outdoor unit DC
fan motor for secure
installation.
2) Check the outdoor unit
fan motor for proper
rotation.
3) Check fuse FUSE5.
4) Outdoor unit control
PWB
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.
O O O Operation (Green)
Plasmacluster (Blue)
O O O O O Timer (Orange) 1 Outdoor unit DC fan
driver IC error 1) Check if the fan IPM
terminal resistance
values are uniform.
2) Outdoor unit fan motor
continuity check.
1) Replace the outdoor
unit control PWB
assembly.
2) Replace the outdoor
unit fan.
O O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 2 Outdoor unit DC fan
lock error 1) Check the outdoor unit
fan motor for proper
rotation.
2) 1): Normal
1) Replace the outdoor
unit control PWB
assembly.
2) Replace the outdoor
unit fan.
O O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 3 Detection error of DC
fan negative rotation
before compressor is
driven (Temporary stop for DC
fan circuit protection) -
O O O Operation (Green)
O O Plasmacluster (Blue)
O O O O O Timer (Orange) 4 Detection error of
inverter current for
DC fan - Replace the outdoor
unit control PWB
assembly.
O O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 5 Outdoor unit DC fan
open connector error 1) Check connector CN3
of the outdoor unit DC
fan motor for secure
installation.
2) No abnormality found in
above inspection 1).
1) Correct the installa-
tion.
2) Replace the outdoor
unit control PWB
assembly.
O O O Operation (Green)
O O Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate. 12-time O O O O O Timer (Orange) 12 0 Thermal fuse
in terminal
board Thermal fuse error
in terminal board (for
power supply) 1) Check the thermal fuse
in terminal board (for
Power supply)
2) Check connector CN5 of
the outdoor unit.
3) 1) 2): Normal
1) Replace terminal
board for Power
supply.
2) Correct the installa-
tion.
3) Replace the outdoor
unit control PCB
assembly.
O O Operation (Green)
Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate. 13-time O O O O O Timer (Orange) 13 0 DC
compressor
Compressor startup
error 1) Check the colors (red,
white, orange) of the
compressor cords for
proper connection.
(PWB side, compressor
side)
2) Check if the IPM terminal
resistance values are
uniform.
3) Check if outdoor main
relay (MRY1) turns on
and voltage of both end
of the condenser (C10)
has become DC290-
330V.
4) 1) 2) 3) : Normal
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 com-
pressor.
O O O Operation (Green)
Plasmacluster (Blue)
O O O O O Timer (Orange) 1 Compressor rotation
error.
(at 120° energizing)
O O O Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange) 2 Compressor rotation
error
(at 180° energizing)
O O O Operation (Green)
O Plasmacluster (Blue)
Indoor and
outdoor units
operate. O O O O O Timer (Orange) 3 Detection error of
inverter current Check the circuit of
detection of inverter
current. Replace the outdoor
unit control PWB
assembly.
O O O Operation (Green)
O O Plasmacluster (Blue)