Check Of Outdoor Unit - Mitsubishi Electric MS09NW*2 Technical & Service Manual

Ductless split-type air conditioners

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Check of outdoor unit

Compressor and outdoor fan do not operate.(Only indoor fan operates.)

Start

Press EMERGENCY ON/OFF button.

3-minute time delay works.

Test mode operates for 30 minutes.

Check voltage to terminal block of outdoor unit. Is

there 115V AC to terminal block between

Check voltage to terminal block of outdoor unit. Is

there DC12V to terminal block between 2 2 - 1 1 ?

Check the outdoor fan motor , compressor , relay ,

contactor , and wiring.

Yes

Check voltage to terminal block of indoor unit. Is

there DC12V to terminal block between 2 2 - 1 1 ?

Check the indoor, outdoor connection.

Turn on outdoor power supply.

Check the indooor electronic control

P.C.board and wiring.

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