AY-AP18CE AY-AP24CE
AH-AP18CE AH-AP24CE
AE-A18CE
AE-A24CE
AU-A18CE
AU-A24CE
31
For AY-AP24CE/AE-A24CE, AY-AP18CE/AE-A18CE
The room is not heated at all or not heated.
The compressor does not operate.
The control circuit board is normal.
Refrigerant may be leaked.
The running capacitor may be defective.
The outdoor fan motor may be defective.
The outdoor fan motor capacitor may be defective.
The compressor may be defective.
The thermistor may be defective.
Is the voltage
between terminal "N" and
"4"("1" ..... AY-AP18CE) of the
terminal board the power
supply voltage ?
NO
Replace the PWB ass'y with a new one.
Push the button of "AUX" on the indoor
unit, for more than 5 sec.
Using a tester, measure voltages at the
terminals on the terminal board.
Select HEAT MODE with remote controller.
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
NO
NO
