Ceiling Cassette & High Static Ducted Indoor & Outdoor Units

Part 4 Trouble Shooting
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Only for training and service purposes
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Change Option PCB
Check the the
connection port.
Is it normal ?
Yes
No
Correct connection
Check Flow Chart (CH09)
09
EEPROM
Check sum (Indoor)
• Check sum error
• Check the poor soldering.
• Check the PCB Connection.
Display
code
Title Cause of error Check point & Normal condition