Mitsubishi Electric MSC-C07TV Service Manual page 55

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Check the voltage to terminal block of
outdoor unit. Is there 230V AC to
L N?
terminal block between -
Yes
Outdoor unit does not
operate.
Compressor
does not operate.
Outdoor fan motor
does not operate.
No
Check the outdoor power supply,
power supply cord and connection.
Is the switch(SW2-2) on the
indoor electronic control
P.C. board set to MUH type?
Change the switch
(SW2-2) on the indoor
electronic control P.C.
board to MUH type.
Refer to page 46.
Is the connection of
wiring from terminal block
to compressor correct?
Make the connection of
wiring from terminal
block to compressor
correct.
Is the connection of wiring
from terminal block to
outdoor fan motor correct?
Make the connection
of wiring from terminal
block to outdoor fan
motor correct.
Replace the DEICER
P.C. board.
Yes
Check the DEICER P.C.
board. Refer to page 58.
Is it normal?
No
Does outdoor unit operate?
Replace the compressor.
Check the compressor.
Yes
Refer to page 52.
Is it normal?
No
Does outdoor unit operate?
Replace the outdoor
fan motor.
Check the outdoor fan
Yes
motor. Refer to page 52.
Is it normal?
No
Does outdoor unit operate?
55
No.
Check the compressor
Yes
and outdoor fan motor.
Refer to page 52.
No.
Yes
Ok
No
Check the DEICER
Yes
P.C. board.
Refer to page 58.
No.
Yes
Ok
No
Check the DEICER
Yes
P.C. board.
Refer to page 58.
No.
Yes
Ok