Sharp AE-X4M30PU Service Manual page 17

<INDOOR UNIT> ○:1-second ON / 1-second OFF
Outdoor unit
Problem
indication
symptom
(LED1)
Normal Normal O O O O O Timer (Orange)
condition blinking
Indoor and 1 time O O O O O Timer (Orange)
outdoor units
do not oper-
ate.
O O O O O Timer (Orange)
O O O O O Timer (Orange)
O O O O O Timer (Orange)
Indoor and 2 time
O O O O O Timer (Orange)
outdoor units
do not
operate.
Indoor unit O O O O O Timer (Orange)
operates.
Outdoor
unit does
O O O O O Timer (Orange)
not operate
temporarily
O O O O O Timer (Orange)
O O O O O Timer (Orange)
Indoor and O O O O O Timer (Orange)
outdoor
units do not
operate.
O O O O O Timer (Orange)
Indoor and 3 time O O O O O Timer (Orange)
outdoor
units do not
operate.
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)
Malfunction
Indoor unit
No.*
→
Lamp Main Sub
0
Operation (green)
Plasmacluster (blue)
1
O Operation (green)
Plasmacluster (blue)
O Operation (green)
O Plasmacluster (blue)
O Operation (green)
O Plasmacluster (blue)
O Operation (green)
O O Plasmacluster (blue)
2
O Operation (green)
Plasmacluster (blue)
O Operation (green)
O Plasmacluster (blue)
O Operation (green)
O Plasmacluster (blue)
O Operation (green)
O O Plasmacluster (blue)
O Operation (green)
O Plasmacluster (blue)
O Operation (green)
O O Plasmacluster (blue)
O Operation (green)
O O O Plasmacluster (blue)
3
O O Operation (green)
Plasmacluster (blue)
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)
Content of diagnosis
Main Sub
0 Normal
0 Outdoor unit Heat exchanger
thermistor thermistor short
short-circuit circuit error
1 Outdoor temperature
thermistor short
circuit error
2 Suction thermistor
short circuit error
3 Suction thermistor
(for unit A, B, C, D)
short circuit error
0 Cycle Compressor high
temperature temperature error
1 Compressor
discharge overheat.
2 Outdoor unit heat
exchanger overheat.
3 Indoor unit heat
exchanger overheat.
4 IPM high
temperature error
5 IPM high
temperature error
7 High pressure error
0 Temporary Temporary stop due
stop to low temperature
of out door
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
(for unit A, B, C, D)
open circuit error
4 Discharge thermistor
open circuit error
5 Heat sink thermistor
open circuit error
17
Check point
1) Measure the resistance 1) Replace the outdoor unit
of the outdoor unit thermistor assembly.
thermistors.
2) Replace the outdoor unit
(TH2-4, 6-8: Approx. 4.4kΩ at
thermistor assembly.
77°F(25°C))
3) Replace the outdoor unit
2) Check the lead wire of the control PCB assembly.
outdoor unit thermistor
for torn sheath and
shortcircuit.
3) 1) 2):Normal
1) Check the outdoor unit air 1) Ensure unobstructed air
flow from the outdoor
outlet for blockage.
unit air outlet.
2) Check if the power supply
voltage is AC 230V at full 2) Connect power supply
power. of proper voltage.
3) Charge the specified
3) Check the pipe connections
for refrigerant leaks. amount of refrigerant.
4) Measure resistance of the 4) Replace the outdoor unit
outdoor unit compressor compressor thermistor
thermistor. assembly.
(TH1:Approx.50kΩ at 77°F(25°C)
5) Replace the expansion
valve coil, expansion
5) Check the expansion valve
valve or outdoor unit
for proper operation.
control PCB assembly.
(Temporary stop for cycle
protection)
(Temporary stop for cycle
protection)
(Temporary stop for cycle
protection)
Measure resistance of the
heat-sink thermistor.
Replace the outdoor unit
control PCB assembly.
Check pressure sensor
(Temporary stop for cycle If the temperature of
protection) outdoor is not lower than
5°F(-15°C), check the
outdoor temp. thermistor.
1) Check connector CN8A 1) Correct the installation
and CN8C of the outdoor
2) Replace the outdoor unit
unit thermistor for secure
thermistor assembly.
installation.
3) Replace the outdoor unit
2) Measure resistance of
thermistor assembly.
outdoor thermistors TH1-
4) Replace the outdoor unit
4, 6-8.
control PWB assembly.
3) Check the lead wires of
thermistors TH1- 4, 6-8
on the outdoor unit control
PCB for open-circuit.
4) 1) 2) 3):Normal
AE-X4M30PU
Action
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