– 50 –
Check
code
Outdoor
LED display
—
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Indoor/Outdoor communication error]
[Case thermostat operation]
Check CODE No. [14].
Correct wiring of connectors
and terminal blocks.
Check outdoor P.C. board .
Defect → Replace
Correct wiring indoor/outdoor
control wires
Is setting of group address
of remote controller correct?
Are inner wiring and indoor/outdoor
control wires (1, 2, 3) normal?
Are wiring of terminal blocks (1, 2, 3) normal?
YES
YES
YES
NO
NO
NO
Check crushed or broken pipe.
Defect → Correct and Replace
Correct defective position.
Replace defective part.
Open valve fully.
Repair defectives position.
Recharge refrigerant.
Check outdoor P.C. board .
Defect → Replace
Correct connector.
Case thermostat error → Replace
Is valve fully opened?
Is PMV normal?
Is there no gas leak?
Is it not refrigerant shortage?
Is cooling/heating operation available
when short-circuiting case thermostat?
Are CN500 connection
and case thermostat normal?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
[E04]
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