Sharp AE-X4M30PU, Service Manual

Page: 18 / 42

18
AE-X4M30PU
Problem
symptom
Outdoor unit
indication
(LED1)
Indoor unit
Malfunction
No.*
Content of diagnosis
Check point Action
→
Lamp Main Sub Main Sub
Indoor and
outdoor
units do not
operate. 6-time O O O O O Timer (Orange) 6 0 Outdoor unit
DC Current
DC over current
error Go to “DC Over Current Error (6-0 error)”.
O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 IPM pin level error Check the IPM is attached
correctly to the outdoor unit
IPM PWB. Replace the outdoor unit
IPM PWB assembly.
O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate. 7-time O O O O O Timer (Orange) 7 0 Outdoor unit
AC Current AC over current error 1) Ensure unobstructed air
flow from the outdoor unit
air outlet.
2) Check the outdoor unit fan
motor.
1) Ensure unobstructed air
flow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan motor.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 AC current error
when OFF 1) IPM continuity check 1) Replace the outdoor
IPM PWB
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 AC maximum current
error 1) Ensure unobstructed air
flow from the outdoor unit
air outlet.
2) Check the outdoor unit fan
motor.
1) Ensure unobstructed air
flow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan motor.
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 AC current
deficiency error
1) Replace the outdoor unit
control PCB assembly.
2) Charge the specified
amount of refrigerant.
3) Correct refrigerant clogs.
(Stop valve, pipe, expan-
sion valve)
1) Replace the outdoor unit
control PCB assembly.
2) Charge the specified
amount of refrigerant.
3) Correct refrigerant clogs.
(Stop valve, pipe,
expansion valve)
O O O Operation (green)
O O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate. 8-time O O O O O Timer (Orange) 8 0 Abnormal
wire check Abnormal wire check
error 1) Check the expansion valve.
(unit A - C)
2) Are four expansion valves
connected by mistake.
3) Check the wiring between
units.
1) Replace the outdoor
control board assembly.
2) Reattach
3) Check the wiring
between units.
O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate. 9-time O O O O O Timer (Orange) 9 4 Cycle
temperature 4 way valve error or
Gas leak error 1) Check the unit thermistor
TH2 (exchange) and
TH3 (pipe temperature)
are installed in correct
portions.
2) Check if the refrigerant
volume is abnormally low.
3) Check the 4-way valve for
proper operation.
1) Correct the installation.
2) Change the specified
amount of refrigerant.
3) Replace the 4-way
valve.
O O Operation (green)
O Plasmacluster (blue)
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 installation.
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
drive 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 installation.
2) Replace the outdoor unit
control PWB assembly.
O O O Operation (green)
O O Plasmacluster (blue)