Main Unit and Piping
Electrical
Test Operation
Reference
67
Test Operation
3) Connection condition check
Check if the wiring between outdoor and indoor units are connected correctly with the display indicated on the mas-
ter and the sub outdoor units.
The display is as follows.
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In the case of Combination Multi master unit, or single outdoor unit
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In the case of Combination Multi sub unit
Check both the master and the sub unit displays, and make sure that the number of connected indoor and outdoor
units and the sub unit address are properly displayed.
If the connection condition display agrees with the actual condition, press SET switch on the master unit for 2 sec-
onds or longer to fix the connection condition. (Current connection condition is memorized.)
After fixing the connection status, the display automatically proceeds to “4) Connection condition display.“
When the connection condition is not correct, turn OFF the power supply and check the wiring, and then turn the
power supply ON again.
The sub unit proceeds automatically to “4) Connection status display“ when the master unit memorizes the connec-
tion condition information.
CODE No.
UP
DOWN
SW2
SW3
SW4
SW5
SW6
INDOOR
SELECT
MODE
SELECT CLEAR SET
CODE No.
UP
DOWN
SW2
SW3
SW4
SW5
SW6
INDOOR
SELECT
MODE
SELECT CLEAR SET
CODE No.
UP
DOWN
SW2 SW3
SW4
SW5
SW6
INDOOR
SELECT
MODE
SELECT CLEAR SET