63
SS
Check of power supply
Outdoor unit does not operate. (LED display: display OFF)
Turn on power supply.
No
Yes
Yes
No
No
Yes
No
Yes
Yes
No
Replace the power board.
Start
Check the connecting of parts of main power supply circuit.
Is there voltage of 230V AC in the
power supply terminal block?
Is the output voltage from the noise
filter P.C. board 230V AC?
Is the input voltage to the outdoor
electronic control P.C. board 325V DC?
Check the power supply cable.
Replace the outdoor electronic control
P.C. board.
Replace the noise
filter P.C. board.
Is fuse (F912) blown?
Is the input voltage to the power board
230V AC?
Replace the fuse.
Replace the reactor.
TT
Check of LEV
No
Yes
No
Yes
Start
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
[SUZ-A18VR.TH SUZ-A24VR.TH]
OC304A --3qxp 04.6.29 8:34 AM Page 63
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