Daikin VRV IV RDXYQ5T8V1B Series, Installer And User Manual

Page: 117 / 140

19 | Commissioning
Installer and user reference guide
117
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
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.
3 Make sure the default (idle) situation is existing (H1P is OFF); see "18.2.4 To
access mode 1 or 2" [ 4 102]. Push BS4 for 5 seconds or more. The unit will
start test operation.
Result: The test operation is automatically carried out, the compressor unit
H2P flashes and the indication "Test operation" and "Under centralised
control" will display on the user interface of indoor units.
Steps during the automatic system test run procedure:
Step Description
Control before start up (pressure equalisation)
Cooling start up control
Cooling stable condition
Communication check
Stop valve check
Pipe length check
Pump down operation
Unit stop
INFORMATION
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.
4 Check the test operation results on the compressor unit 7‑LEDs display.
Completion Description
Normal
completion
Abnormal
completion
Refer to "19.3.4 Correcting after abnormal completion of
the test run" [
4
118] to take actions for correcting the
abnormality. When the test operation is fully completed,
normal operation will be possible after 5 minutes.
19.3.3 To perform a test run (7-segment display)
(in case of 8 HP)
1 Make sure all field settings you want are set; see "18.2 Making field
settings" [
4
99].
2 Turn ON the power to the compressor unit, heat exchanger 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.