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11
Test run
Before test run
"Confirm that the value of the refrigerant pipe of the outdoor unit is OPEN.
• Before turning on the power, confirm that the resistance between the terminal block of power supply and the
earth is more than 1MΩ using a 500V Mega ohm meter.
Do not run the unit if it is less than 1MΩ."
CAUTION
• To save the compressor when it is activated, turn on the power at least 12 hour before stating.
Interface PC board
Methods of test run for safety equipment
◆When connecting Shut-off Valve unit, perform the following detailed
inspection mode.
The detailed inspection mode is performed on the interface PC board of the outdoor unit.
Detailed inspection mode is completed in about 30 minutes.
<Detailed inspection mode start operation>
1
Set the rotary switch on the interface board of the outdoor unit to SW01=[2], SW02=[15],
sw03=[16].
7-segment display
[A]
[B]
[FS]
[
]
2
Push SW04 for at least 5 seconds
7-segment display
[A]
[B]
[FS]
[CH]
93-EN
Push switch
Push switch
SW04
SW05
SW06
D600
D601 D602 D603 D604
7-segment
7-segment
display [A]
display [B]
SW01
SW02
SW03
Rotary switches
– 47 –
If the detailed inspection mode successfully completes, the following will be displayed.
7-segment display
[A]
[B]
[FS]
[ -- ]
If there is an incorrect electrical wiring, incorrect piping connection, incorrect indication, etc., the following will be
displayed. If there are multiple indoor units with errors, push SW06 to change the address display of the indoor
unit. (If there is only one indoor unit with an error, the display remains the same.)
7-segment display
[A]
[B]
[Err]
[ # ]
[FS]
The indication changes every 0.5 second.
If [Err] is indicated on 7-segment display, execute cooling/heating test run for each indoor unit and check cool/hot
air is blowing. Also, check the piping connections, wiring connections, and settings again.
If there is no problem after checking again, the system is normal.
When you modify piping connections, wiring connections, or settings, execute detailed inspection mode again.
Please contact a qualified service person if there is any trouble during test run.
*[Err] may be indicated even if there is no problem.
• When the temperature difference is large between in each indoor unit.
• When the Shut-off Valve unit is connected to the main pipe from the outdoor unit.
<Detailed inspection mode start operation>
1
Return the rotary switch on the interface board of the outdoor unit to SW01=[1], SW02=[1], and
SW03=[1].
7-segment display
[A]
[B]
[U1]
[
]
◆When using a Leak Detector, perform the following simple inspection
mode.
• The simple inspection mode is performed with Leak Detector.
• The simple inspection mode should be performed for each Leak Detector.
• If you run a simple inspection mode while normal operation, normal operation is suspended and simple
inspection mode is started.
• The simple inspection mode can be performed during the detailed inspection mode.
(Detailed inspection mode operation does not stop.)
<Simple inspection mode start operation>
1
Push the reset switch on the refrigerant Leak Detector for at least 5 seconds.
(Please use a precision screwdriver, etc.)
7-segment display
[A]
[B]
It is not displayed during detailed inspection mode.
[Sd]
[CH]
The refrigerant leak detector works. (For the operation of Leak Detector, refer to the operating instructions of Leak
Detector.)
If the simple inspection mode operates normally, the following is displayed.
# : Address of error indoor unit
94-EN
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