Sharp AY-XP24PU Service Manual page 17

Outdoor
Problem unit
symptom indication
(LED1)
o
Indoor and 6-time O O O O O Timer (Orange)
outdoor
O O
units do not
operate.
O O O O O Timer (Orange)
O O
Indoor and 7-time O O O O O Timer (Orange)
outdoor
O O O Operation (Green)
units do not
operate.
O O O O O Timer (Orange)
O O O Operation (Green)
O O O O O Timer (Orange)
O O O Operation (Green)
O
O O O O O Timer (Orange)
O O O Operation (Green)
O O Plasmacluster (Blue)
Indoor and 8-time O O O O O Timer (Orange)
outdoor
units do not O
operate.
O O O O O
Indoor and 9-time
outdoor
O
units do not
operate.
O O O O O Timer (Orange)
O
O
Indoor and 10-time O O O O O Timer (Orange)
outdoor
O O
units do not
O
operate.
O O O O O Timer (Orange)
O O
O
Malfunction
Indoor unit
No.*
Lamp Main Sub
6 0
Operation (Green)
Plasmacluster (Blue)
1
Operation (Green)
O Plasmacluster (Blue)
7 0
Plasmacluster (Blue)
1
O Plasmacluster (Blue)
2
Plasmacluster (Blue)
3
8 0
Operation (Green)
Plasmacluster (Blue)
Timer (Orange)
0
9
Operation (Green)
O
Plasmacluster (Blue)
4
O Operation (Green)
Plasmacluster (Blue)
10 0
Operation (Green)
Plasmacluster (Blue)
1
Operation (Green)
Plasmacluster (Blue)
3 - 3
Content of diagnosis
Main Sub
Outdoor unit DC over current Go to "DC Over Current Error (6-0 error)".
DC Current error
IPM pin level error Check the IPM is attached
correctly to the outdoor unit
IPM PWB.
Outdoor unit AC over current error 1) Ensure unobstructed air
AC Current
2) Check the outdoor unit
AC current error 1) IPM continuity check
when OFF
AC maximum current 1) Ensure unobstructed air
error
2) Check the outdoor unit
AC current 1) Replace the outdoor unit
3) Correct refrigerant clogs.
Abnormal Abnormal wire check 1) Check the expansion
wire check error
2) Are four expansion
3) Check the wiring
Thermistor
1)Check the ther-
Cycle
temperature
installation error
or 4-way valve
error.
2)Check resistance of
3)Check the 4-way
4)No abnormality
Cycle 4 way valve error or 1) Check the unit thermistor
temperature Gas leak error
2) Check if the refrigerant
3) Check the 4-way valve
EEPROM EEPROM (outdoor) -
error data error
EEPROM (outdoor)
data error
AY-XPC15PU
Check point Action
Replace the outdoor
unit IPM PWB
assembly.
1) Ensure unobstructed
unit air outlet. outdoor unit air
outlet.
fan motor. 2) Check the outdoor
unit fan motor.
1) Replace the outdoor
IPM PWB
1) Ensure unobstructed
unit air outlet. outdoor unit air
outlet.
fan motor. 2) Check the outdoor
unit fan motor.
1) Replace the outdoor
control PCB assembly. unit control PCB
assembly.
amount of refrigerant.
amount of refriger-
ant.
(Stop valve, pipe,
expansion valve) 3) Correct refrigerant
clogs. (Stop valve,
pipe, expansion
valve)
1) Replace the outdoor
valve. control board
assembly.
valves connected by 2) Reattach
mistake.
3) Check the wiring
between units.
between units.
1)Correct the instal-
mistor (heat lation.
exchanger) and (2-
way valve) are
installed in correct
positions.
2)Change the
thermistors (heat specified amount
exchanger and 2- of refrigerant.
way valve).
3)Replace the 4-
valve for proper way valve.
operation.
4)Replace the out-
found in above door unit control
inspections (1), (2), PWB assembly.
(3).
1) Correct the
TH2 (exchange) and installation.
TH3 (pipe temperature)
2) Change the
are installed in correct
portions.
refrigerant.
3) Replace the 4-way
volume is abnormally
valve.
low.
for proper operation.
Replace the outdoor
unit control PWB
assembly.