Service manual

62
14
Troubleshooting
Remote Controller Check Display
7-Segment Display
Hexadecimal
notation
Decimal notation
Filter Data
Example: A Filter signal is sent from No. 1 and No. 15 units under grouping operation.
Check Data
Example: Room Temp. sensor of No. 1 is defective.
In No. 15, first the Heat Exchanger sensor has
failed. Next, the indoor/outdoor inter-unit wire
(bus communication line) is defective.
Example: There is no check
data.
Unit No.
Check code detected at first Check code detected at last
After 3
seconds