To Perform A Test Run - Daikin VRV IV+ Installer And User Reference Manual

21 | Commissioning

21.5 To perform a test run

Installer and user reference guide
148
INFORMATION
▪
It may take 10 minutes to achieve a uniform refrigerant state before the
compressor starts.
▪
During the test operation, the refrigerant running sound or the magnetic sound
of a solenoid valve may become loud and the display indication may change.
These are not malfunctions.
1 Close all front panels in order to not let it be the cause of misjudgement
(except the electrical component box inspection opening service cover).
2 Make sure all field settings you want are set; see
4
settings" [ 122].
3 Turn ON the power to the outdoor unit and the connected indoor units.
NOTICE
Be sure to turn ON the power 6 hours before operation in order to have power
running to the crankcase heater and to protect the compressor.
4 Make sure the default (idle) situation is existing; see
4
2" [ 124]. Push BS2 for 5 seconds or more. The unit will start test operation.
Result: The test operation is automatically carried out, the outdoor unit
display will indicate "
centralised control" will display on the user interface of indoor units.
Steps during the automatic system test run procedure:
Step
Note: During the test operation, it is not possible to stop the unit operation from a
user interface. To abort the operation, press BS3. The unit will stop after ±30
seconds.
5 Check the test operation results on the outdoor unit 7‑segment display.
Completion
Normal completion
" and the indication "Test operation" and "Under
Description
Control before start up (pressure equalisation)
Cooling start up control
Cooling stable condition
Communication check
Stop valve check
Pipe length check
Refrigerant amount check
Pump down operation
Unit stop
Description
No indication on the 7‑segment display (idle).
"20.2 Making field
"To access mode 1 or
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10