3-5
AY-XPC15PU
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.
14-time
O O O O O Timer (Orange)
14
0
Outdor unit
PAM
PAM over voltage
error
1) Check the AC power
supply voltage for
2) No abnormality found in
above inspection.
1) Correct the installa-
tion.
2) Replace the PWB
assembly.
O O O
Operation (Green)
Plasmacluster (Blue)
O O O O O Timer (Orange)
1
PAM clock error
Check the PAM clock for
proper input.
Replace the outdoor
unit control PWB
assembly.
O O O
Operation (Green)
O Plasmacluster (Blue)
O O O O O Timer (Orange)
2
PAM under voltage
error
1) Check the AC power
supply voltage for
2) No abnormality found in
above inspection.
1) Correct the installa-
tion.
2) Replace the PWB
assembly.
O O O
Operation (Green)
O
Plasmacluster (Blue)
Indoor unit
operates.
Outdoor unit
does not
operate.
Lighting or
OFF
O O O O O Timer (Orange)
17
0
Wiring
between
units
Serial opencircuit
1) Check the wires between
units.
2) Check voltage between
N and 1 the indoor/
outdoor unit terminal
boards.
3) Check the outdoor unit
fuse.
4) Check 15-V,13-V and
5-V voltages on the
PCB.
Check resistance between
IPM terminals.
5) Check pins No.5 and 8
of connector CN3 of the
outdoor unit fan motor
for shortcircuit.
6) Outdoor unit control
PCB.
1) Connect stable
power supply.
Correct the wiring.
2) Replace the outdoor
unit control PWB
assembly.
3) Replace the fuse/
outdoor unit control
PWB assembly.
4) Replace the outdoor
unit control PWB
assembly.
5) Replace the outdoor
unit fan motor.
6) Replace the outdoor
unit control PWB.
O
O Operation (Green)
Plasmacluster (Blue)
Indoor unit
operates.
Outdoor unit
does not
operate.
Lighting or
OFF
O O O O O Timer (Orange)
18
0
Wiring
between
units
Serial opencircuit
Check the wiring between
units.
Correct the wiring.
O
O
Operation (Green)
Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate.
O O O O O Timer (Orange)
1
Check the wiring between
units.
Correct the wiring.
O
O
Operation (Green)
O Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate.
Normal
blinking or
OFF
O O O O O Timer (Orange)
19
0
Indoor unit
fan
Indoor unit fan error 1) Check the indoor fan
motor for proper rotat-
ing operation.
(Check fan lock.)
2) Check the lead wire of
the indoor fan motor for
open-circuit.
3) Check connector ofthe
indoor unit fanmotor for
secureinstallation.
4) 1) 2) 3): Normal
1) Replace the indoor
fan motor.
2) Replace the indoor
fan motor.
3) Correct the installa-
tion of the indoor
fan motor connec-
tor.
4) Replace the indoo-
runit control PCB.
O
O O Operation (Green)
Plasmacluster (Blue)
Indoor and
outdoor
units do not
operate.
Normal
blinking or
OFF
O O O O O Timer (Orange)
20
0
Indoor unit
control PCB
EEPROM data error (EEPROM read data error) Replace the indoor unit
control PWB.
O
O
Operation (Green)
Plasmacluster (Blue)
