4.1 Caution to be observed when trouble shooting

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1. Electronic components of the print circuit board is MOS TYPE FET. When replace and trouble shooting of the print circuit board, Make sure body is grounded before beginning repair work. But, in case can not ground, touch to the plug and earth wire, And remove the potential difference between the set and body of the worker completely.

4.1.1 Print circuit board

4.1.2 Water level detector, Safety switch Feed valve replacement.

4.1.3 Motor replacement

4.1.4 Mechanism case replacement

4.1.5 Rotary detector

4.1.6 Suspension replacement

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