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Inspection and trial operation
Measure to take when E503 error occurs (When "inspection required" sign is appeared on result
report of S-NET pro)
1. Run trial operation mode for more than 30 minutes
2. Run Fan mode for more than 10 minutes
3. Restart the auto trial operation
Ye s
Ye s
Open the service valve of the outdoor unit
No.
Is the service valve of the outdoor unit
opened?
Check for leakage. Perform vacuuming and
charge refrigerant
No.
Is the quantity of the refrigerant
appropriate?
t If the service valve need to be detected, corresponding outdoor unit will display the error.
t If the service valve need to be detected, auto detection mode will end. Check both gas pipe and liquid pipe
service valves when detecting service valve.
t If the opreation range is not within guaranteed range, error may occur even though the product is normal.
CAUTION
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