SHARP RO-189W
Manual de Servicio

RI/RO-189W RI/RO-249W

For RI-189W/RO-189W

CHARACTERISTIC OF TH1 & TH2 K

The room is not cooled at all or not cooled. The compressor does not operate.

180 160 140

Push the button "TEST RUN" on the indoor unit, and wait 3 minutes.

120 100 80

Using a tester, measure voltage at the terminals on the terminal board.

60 40 20 0 -10 0 10 20 Fig. 1

10�C 30K

30 40�C

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. YES

Measure resistances of TH1 and TH2.

Are the resistances conformed Fig. 1 ?

NO

YES

Replace the thermistor ass'y with a new one.

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.

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