51
Check of LEV
No
Yes
No
Yes
Turn on power supply to the outdoor unit after checking LEV coil is mounted to the
LEV body securely.
Is "click - click" sound heard?
Or, do you feel vibration of the LEV coil with a hand?
Disconnect the connector CN795.
Is there normal resistance to LEV coil?
Normal
Replace the outdoor electronic
control P.C. board.
Replace the LEV coil.
• When cooling, heat exchanger of non-operating indoor unit frosts.
• When heating, non-operating indoor unit get warm.
LED display:
LED1 LED2
Lighting Lighting
6 time Goes out
Check of inverter P.C. board
M
Outdoor fan motor does not operate, or stops immediately after starting up.
Yes
(10-times flash)
Yes
Check the LED indication on
the inverter P.C. board.
Does the LED flash 10-times?
No
No
Is the fuse (F901) blown on
the inverter P.C. board?
Replace the inverter P.C. board.
CN931
CN932
Inverter P.C.board
(Solder side)
Check the corresponding parts
following LED indication.
(Refer to 10-3.)
Operate the outdoor unit by starting
EMERGENCY OPERATION.
Check the connection of the connectors
(CN931, CN932) of outdoor fan motor.
If the connection is poor, make it correct.
Check the outdoor fan motor.
(Refer to10-5.I.)
MUZ-A24 MUY-A24
MUZ-A09/12/15/17 MUY-A15/17
L
OB451--2.qxp 06.3.29 9:49 AM Page 51
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