Sharp AE-A184 Service Manual / Specification ▷ View online
21
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
For AY-A244E/AE-A244E
The room is not cooled at all
or not cooled.
The compressor does not operate.
or not cooled.
The compressor does not operate.
Measure resistances of TH1 and TH2.
The control circuit is normal.
The compressor may be defective.
The running capacitor may be defective.
Refrigerant may be leaked.
The outdoor fan motor may be defective.
The outdoor fan motor capacitor may be defective.
The compressor may be defective.
The running capacitor may be defective.
Refrigerant may be leaked.
The outdoor fan motor may be defective.
The outdoor fan motor capacitor may be defective.
Push the button "TEST RUN" on
the indoor unit, and wait 3 minutes.
the indoor unit, and wait 3 minutes.
Is the voltage
between terminal "N" and
"1" of the terminal board the
power supply voltage ?
Are the resistances
conformed Fig. 1 ?
Replace the thermistor ass'y with a new one.
NO
YES
YES
NO
Replace the PWB ass'y with a new one.
Using a tester, measure voltage at
the terminals on the terminal board.
the terminals on the terminal board.
Replace the relay RY4 with a new one.
Is the voltage
between terminal "N" and
"0" of RY4 the power supply
voltage ?
YES
NO
22
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
The room is not heated at all or not heated.
The compressor does not operate.
The compressor does not operate.
The control circuit is normal.
The compressor may be defective.
The running capacitor may be defective.
Refrigerant may be leaked.
The outdoor fan motor may be defective.
The outdoor fan motor capacitor may be defective.
The compressor may be defective.
The running capacitor may be defective.
Refrigerant may be leaked.
The outdoor fan motor may be defective.
The outdoor fan motor capacitor may be defective.
Is the voltage
between terminal "N" and
"1" of the terminal board the
power supply voltage ?
NO
Replace the PWB ass'y with a new one.
Push the button of "TEST" on the indoor
unit, and wait 3 minutes.
unit, and wait 3 minutes.
Using a tester, measure voltages at the
terminals on the terminal board.
terminals on the terminal board.
Select HEAT MODE with remote controller.
And then start operation.
And then start operation.
Is the voltage
between terminal "N" and
"2" of the terminal board the
power supply voltage ?
Is the voltage
between terminal "N" and
"3" of the terminal board the
power supply voltage ?
YES
YES
YES
Is the voltage
between terminal "N" and
"0" of RY4 the power supply
voltage ?
A
NO
NO
NO
A
Replace the PWB ass'y with a new one.
YES
23
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
REFRIGERATION CYCLE
Figure R-1. Refrigeration Cycle for AY-A184E
Figure R-2. Flow of Refrigerant for AY-A184E
At Cooling
At Heating
Indoor unit
Outdoor unit
Flare coupling
Evaporator
Strainer
Condenser
Accumulator
Compressor
Reverse
valve
valve
Strainer
Capillary
tube
tube
Flare coupling
Flare coupling
Flare coupling
1
4
2
3
S
S
24
AY-A184E
AY-A244E
AE-A184E
AE-A244E
AY-A244E
AE-A184E
AE-A244E
Figure R-3. Refrigeration Cycle for AY-A244E
Figure R-4. Flow of Refrigerant for AY-A244E
At Cooling
At Heating
Indoor unit
Outdoor unit
Flare coupling
Evaporator
Strainer
Condenser
Accumulator
Compressor
Reverse
valve
valve
Check
valve
valve
Capillary
tube B
tube B
Strainer
Capillary
tube A
tube A
Flare coupling
Flare coupling
Flare coupling
1
4
2
3
S
S
Capillary
tube C
tube C
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