Fujitsu ASU18RLF Service Instructions Manual page 32

If the connection is correct [(Example) When 4 indoor units are connected]
After the number of connected units are displayed, the LED for each unit will light up in order from A to D.
POWER ERROR
MONITOR
/ MODE
B C
A
(7 sec.)
(7 sec.)
(7 sec.)
(7 sec.)
If the connection is incorrect [(Example) When connection of B and C of the 4 units are reversed]
After the number of connected units are displayed, B and C will light up in reverse.
POWER ERROR
MONITOR
/ MODE
B C
A
(7 sec.)
(7 sec.)
(7 sec.)
(7 sec.)
[How to record the contents]
Please fill the displayed result according to the following example.
Example 1
When piping A to D is connected bu the wires fo B and C are connected in reverse.
Displayed results
The LED will light up in 7 second interval in the following order.
POWER ERROR
MONITOR
/ MODE
B C
A
(7 sec.)
(7 sec.)
(7 sec.)
(7 sec.)
D E F
D E F
D
E F
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