Sharp AE-X15PU Service Manual page 30

AE-X15PU
Outdoor
Problem unit
symptom indication
(LED1)
Indoor and 5-time O O O O O Timer (Orange)
outdoor
units do not
operate.
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
Indoor and 6-time O O O O O Timer (Orange)
outdoor
units do not
operate.
O O O O O Timer (Orange)
Indoor and 7-time O O O O O Timer (Orange)
outdoor
units do not
operate.
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
Indoor and 8-time O O O O O Timer (Orange)
outdoor
units do not
O
operate.
Malfunction
Indoor unit
→
Lamp Main Sub
5
O O Operation (Green)
Plasmacluster (Blue)
O O Operation (Green)
O Plasmacluster (Blue)
O O Operation (Green)
O Plasmacluster (Blue)
O O Operation (Green)
O O Plasmacluster (Blue)
O O Operation (Green)
O Plasmacluster (Blue)
O O Operation (Green)
O O Plasmacluster (Blue)
6
O O Operation (Green)
Plasmacluster (Blue)
O O Operation (Green)
O Plasmacluster (Blue)
7
O O O Operation (Green)
Plasmacluster (Blue)
O O O Operation (Green)
O Plasmacluster (Blue)
O O O Operation (Green)
O Plasmacluster (Blue)
O O O Operation (Green)
O O Plasmacluster (Blue)
8
Operation (Green)
Plasmacluster (Blue)
Content of diagnosis
No.*
Main Sub
0 Outdoor unit Heat exchanger
thermistor thermistor open
open-circuit circuit error
1 Outdoor temperature
thermistor open
circuit error
2 Suction thermistor
open circuit error
3 Suction thermistor
open circuit error
4 Discharge thermistor
open circuit error
5 Heat sink thermistor
open circuit error
0 Outdoor unit DC over current
DC Current error
1 IPM pin level error
0 Outdoor unit AC over current error 1) Ensure unobstructed air
AC Current
1 AC current error
when OFF
2 AC maximum current
error
3 AC current
0 Abnormal Abnormal wire check
wire check error
3 – 14
Check point Action
1) Check connector of 1) Correct the installa-
outdoor unit thermistor ion
for secure installa ion.
2) Replace the outdoor
2) Measure resistance of
unit thermistor
outdoor hermistors
assembly.
3) Check the lead wires
3) Replace the outdoor
of hermistors on the
unit thermistor
outdoor unit control
assembly.
PCB for open-circuit.
4) 1) 2) 3):Normal
4) Replace the outdoor
unit control PWB
assembly.
Go to "DC Over Current Error (6-0 error)".
Check the IPM is attached Replace the outdoor
correctly to the outdoor unit unit IPM PWB
IPM PWB. assembly.
1) Ensure unobstructed
unit air outlet. outdoor unit air
outlet.
2) Check the outdoor unit
fan motor. 2) Check the outdoor
unit fan motor.
1) IPM con inuity check 1) Replace the outdoor
IPM PWB
1) Ensure unobstructed air 1) Ensure unobstructed
unit air outlet. outdoor unit air
outlet.
2) Check the outdoor unit
fan motor. 2) Check the outdoor
unit fan motor.
1) Replace the outdoor unit 1) Replace the outdoor
control PCB assembly. unit control PCB
assembly.
amount of refrigerant.
amount of refriger-
3) Correct refrigerant clogs.
ant.
(Stop valve, pipe,
expansion valve) 3) Correct refrigerant
clogs. (Stop valve,
pipe, expansion
valve)
1) Check the expansion 1) Replace the outdoor
valve. control board
assembly.
2) Are four expansion
valves connected by 2) Reattach
mistake.
3) Check the wiring
3) Check the wiring between units.
between units.