Test Operation Procedure - Daikin VRV RXYMQ-A Series Service Manual

Test Operation
3.3

Test Operation Procedure

To start smoothly, a crankcase heater is equipped to the unit. To power up the crankcase heater
in advance, be sure to turn on the power supply 6 hours before operation.
Warning
Be sure to inform other installers or attach the front panel well before leaving with the power
supply turned on for the outdoor unit.
Before powering ON
 Protect the electronic components with insulating tape in accordance with the Service
 All indoor units connected with the outdoor unit will operate automatically after powering on.
Powering On to Test Operation
 Make sure to perform a test operation first after installation (If the unit is operated with the
 After turning on the power supply, do not touch any switches excluding push button switches
 Check the state of the outdoor units and fault wiring with this operation.
1. Attach the front panel of the outdoor unit.
2. Make sure all field settings you want are set.
3. Turn ON the power to the outdoor unit and the connected indoor units.
4. Make sure the default (idle) situation is existing. Push BS2 for 5 seconds or more. The unit
 The test operation is automatically carried out, the outdoor unit display will indicate t01 and
Steps during the automatic system test run procedure:
t01: control before start up (pressure equalization)
t02: cooling start up control
t03: cooling stable condition
t04: communication check
t05: stop valve check
t06: pipe length check
t07: refrigerant amount check
t08: in case [2-88]=0, detailed refrigerant situation check (RXYMQ4AVMK only)
t09: pump down operation
t10: unit stop
 If the automatic refrigerant charge function has been used, t07 and t08 will not be displayed
 During the test operation, it is not possible to stop the unit operation from a user interface. To
5. Check the test operation results on the outdoor unit segment display.
Normal completion: no indication on the segment display (idle)
Abnormal completion: indication of error code on the segment display
Take actions for correcting the abnormality. When the test operation is fully completed, normal
operation will be possible after 5 minutes.
6. Be sure to attach the front panel of the outdoor unit after test operation is completed.
136
Precautions label attached to the front panel.
To ensure safety, check the indoor unit installation has been completed.
indoor unit's remote controller without performing a test operation, the error code U3 will be
displayed on the remote controller and the unit will not operate normally).
and DIP switches when setting the outdoor unit PCB (A1P).
(For positions of the button switches (BS1~3) and DIP switches (DS1, 2) on the PCB, refer
to the Service Precautions label)
Turn on the power supply of the outdoor and indoor units.
will start test operation.
the indication "Test operation" and "Under centralized control" will display on the user
interface of indoor units.
during the test operation, as they have already been checked during automatic refrigerant
charge operation.
abort the operation, press BS3. The unit will stop after ±30 seconds.
SiME332106E
Part 5 Field Settings and Test Operation