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Check crushed or broken pipe.
Defect → Correct and Replace
Correct defective position.
Replace defective part.
Open service valve fully.
Repair defectives position.
Recharge refrigerant.
Check outdoor P.C. board.
Defect → Replace
Correct connector.
Case thermostat error → Replace
Cut jumper line according
to the explanation sheet packaged
with the service P.C. board.
Is service valve fully opened?
Is PMV under correct conditions?
Is there gas leak?
Is there refrigerant shortage?
Are CN609 connection and
case thermostat correct?
Short each pins of CN609.
Can compressor operate?
YES
YES
NO
YES
YES
NO
NO
YES
NO
NO
Check
code
[H04]
[L10]
Outdoor
LED display
<Display 1> <Display 2>
ll
ll
¡ ¥
ll
¡
l
¡¡
<Display 1> <Display 2>
ll
¡ ¥
¡
l
l
¥
¡
l
¡¡
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Case thermostat operation]
[Unset model type]: Only when service P.C. board is used
<In case of SP80>