Sharp AE-X15PU, Service Manual

Page: 31 / 46

AE-X15PU
3 – 15
0
O O O O O
O
Timer (Orange)
O Operation (Green)
Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate. 9- ime
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
refrigerant.
3) Replace the 4-way
valve.
O O Operation (Green)
O Plasmacluster (Blue)
Cycle
temperature
Thermistor
installation error
or 4-way valve
error.
1)Check the ther-
mistor (heat
exchanger) and (2-
way valve) are
installed in correct
positions.
1)Correct the instal-
la ion.
2)Check resistance of
hermistors (heat
exchanger and 2-
way valve).
2)Change he
specified amount
of refrigerant.
3)Check the 4-way
valve for proper
operation.
3)Replace the 4-
way valve.
4)No abnormality
found in above
inspections (1), (2),
(3).
4)Replace the out-
door unit control
PWB assembly.
Indoor and
outdoor
units do not
operate. 10-time O O O O O Timer (Orange) 10 0 EEPROM
error EEPROM (outdoor)
data error - Replace the outdoor
unit control PWB
assembly.
O O Operation (Green)
Plasmacluster (Blue)
O O O O O Timer (Orange) 1 EEPROM (outdoor)
data error
O O Operation (Green)
O Plasmacluster (Blue)
Problem
symptom
Outdoor
unit
indication
(LED1)
Indoor unit
Malfunction
No.*
Content of diagnosis Check point Action
→
Lamp Main Sub Main Sub
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 nega ive 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)