Sharp AE-X4M30PU, Service Manual

Page: 19 / 42

AE-X4M30PU
19
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. 12-time O O O O O Timer (Orange) 12 0 Thermal fuse
in terminal
board Thermal fuse error
in terminal board (for
power supply) 1) Check the thermal fuse in
terminal board (for Power
supply)
2) Check connector CN5 of
the outdoor unit.
3) 1) 2): Normal
1) Replace terminal board
for Power supply.
2) Correct the installation.
3) Replace the outdoor unit
control PCB assembly.
O O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate. 13-time O O O O O Timer (Orange) 13 0 DC
compressor
Compressor startup
error 1) Check the colors (red,
white, orange) of the com-
pressor cords for proper
connection.
(PWB side, compressor side)
2) Check if the IPM terminal
resistance values are
uniform.
3) Check if outdoor main
relay (MRY1) turns on
and voltage of both end of
the condenser (C10) has
become DC290-330V.
4) 1) 2) 3) : Normal
1) Correct the installation.
(U: Red, V: White, W:
Orange)
2) Replace the outdoor unit
control PWB assembly.
3) Replace the outdoor unit
control PWB assembly.
4) Replace the compres-
sor.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 Compressor rotation
error.
(at120C energizing)
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Compressor rotation
error
(at 180C energizing)
O O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor units
operate. O O O O O Timer (Orange) 3 Detection error of
inverter current Check the circuit of detection
of inverter current. Replace the outdoor unit
control PWB assembly.
O O O Operation (green)
O O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate. 14-time O O O O O Timer (Orange) 14 0 Outdoor unit
Active filter
PFC Module over
voltage error 1) Check the connector of
PFCM for secure installa-
tion.
2) Check the AC power supply
voltage for fluctuation.
3) 1),2) Normal
1) Correct the installation.
2) Connect stable power
supply.
3) Replace the outdoor unit
PFCM PWB or control
PCB assembly.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 PFC Module clock
error
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 PFC Module low
voltage error
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 4 PFC Module error
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/out-
door 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 rotating 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 installation
of the indoor fan motor
connector.
4) Replace the indoorunit
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)