Check Run Operation (Automatic Wiring Correction) - Fujitsu ASU18RLF Service Instructions Manual

27. CHECK RUN OPERATION (AUTOMATIC WIRING CORRECTION)

If there is a mis-wiring after check operation, switch the indoor unit port automatically on the microcomputer.
(Check operating time)
-Cooling : 30min (Time of approximately)
-Heating : 60min (Time of approximately)
Operating procedure for check run
NOTE : Be sure that the power is turend ON before starting the check run.
(1) Press the "CHECK" swtich for 3 seconds or more.
CHECK
SW2
The positions of the swtiches on the outdoor unit
control board are shown in the right.
(2) The number of indoor units ( and the places ) connected through the communication lines is displayed.
・
If the displayed number of units ( places ) and the installed number of units ( places ) is the same,
proceed to step (3).
・
If the displayed number of units ( places ) and the installed number of units (places ) is not the same,
shut off the power and check whether the indoor and outdoor communication lines are properly connected.
・ If there is no operation for 1 minute, the LED will return to the original display.( POWER / MODE LED : ON )
(3) Press the "CHECK" switch for 3 seconds or more again. Check run is initiated.
When check run is initiated, all LEDs from A to F will flash. ( Preliminary operation )
The LED for each indoor unit will switch off in order as check for each unit is completed.
To interrupt the check run, press the "CHECK" switch.
Example) When 4 indoor units ( A to D ) are connected.
POWER ERROR
/ MODE
A B
(2-blink)
(4) After the check run is complete, results will be displayed. Please fill the displayd result table accordingly.
・
NOTE Automatic wiring correction will not be completed if the power is turned off while displaying the result.
To confirm the automatic wiring correction, be sure to carry out step (5).
If frost is formed on the outdoor unit while displaying the result, Automatic defrost function will operate.
・
Proceed to step (5) after the defrost function is finished.
Example) When 4 indoor units ( A to D ) are connected.
POWER
MONITOR
/ MODE
C D E F
(2-blink)
01-28
ERROR
MONITOR