Daikin VRV II RXYQ8MY1K Service Manual page 101

Test Operation
1.1.3 Check Operation
* During check operation, mount front panel to avoid the misjudging.
* Check operation is mandatory for normal unit operation.
(When the check operation is not executed, alarm code "U3" will be displayed.)
Check Setting mode 1.
Press and hold the TEST
button (BS4) on outdoor unit
PC board for 5 seconds.
Completion of check operation
<Precautions for check operation>
• If the check operation is started within approximately 12 minutes after turning ON the power
• For the outdoor-multi system, an outdoor unit to which the indoor unit connecting wires are
• In order to ensure even refrigerant conditions, there may be cases where a maximum of
• No malfunctions can be checked on individual indoor unit. After the completion of this check
• While in check operation mode, the indoor units as well as the outdoor units start the
• Work with all the outside panels closed except for the switch box.
• While in the test operation, operating sounds such as refrigerant passing sounds or solenoid
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If the LED "H1P" turns OFF, the system is set to "Setting mode 1".
If the "H1P" turns ON or Blink, pressing the MODE button (BS1) will set
the system to "Setting mode 1".
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The test operation is started automatically.
The following judgements are conducted within 15 minutes.
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2"Check for wrong wiring"
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2"Check refrigerant for over charge"
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2"Check stop valve for not open"
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2"Pipe length automatic judgement"
*1. The "H2P" blinks during operation, and "TEST OPERATION" and
"UNDER CENTRALIZED CONTROL" are displayed on the remote
controller.
2. There may be cases where approximately 10 minutes are required
for the compressor to start up, which, however, is not a malfunction
but used to ensure even refrigerant conditions.
3. The check operation will be automatically conducted in cooling
mode.
4. In order to stop the compressor operation, press the RETURN
button (BS3). The compressor will stop after the completion of
residual operation for a period of approximately 30 seconds. (The
compressor operation cannot be stopped from the remote
controller.)
After the completion of check operation, check the operation results
through the LED displays.
(For normal completion)
(For abnormal completion)
supply to the indoor and outdoor units, H2P will turn ON and the compressor will not
operate. Referring to information in table in 1.1.2 Turn Power On (on the previous page),
check to be sure the LED displays are normal and then operate the compressor.
connected serves as the master unit. Be sure to make settings with pushbutton switches on
the master unit.
approximately 10 minutes are required for the compressor to start up, which, however, is not
a malfunction.
operation, check the individual indoor unit for any malfunctions while in normal operation
mode using the remote controller.
operation.
Do not attempt to conduct the check operation while working on the indoor unit.
valve switching sounds may become louder.
1 1 8 1 1 1 1
1 8 8 1 1 1 1
Si39-502A
Check the malfunction code on
the remote controller and then
rectify the malfunction according
to information in the
"Troubleshooting".
Test Operation
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