Daikin VRV 5 REYA8A7Y1B Installer And User Manual page 154

22 | Commissioning
Installer and user reference guide
154
3 To start the BS/indoor unit connection check, make field setting [2-20]=2 (see
"21.1.8 Mode 2: field
Result: The check operation is automatically carried out, the outdoor unit display
will indicate " " and the indication "Centralised control" and "Test run" will
display on the indoor unit user interface(s).
Steps during the automatic connection check procedure:
Step
INFORMATION
During the check 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.
During the check, if the following codes are on 7-segment display, the check will
not continue, take actions for correcting.
Code
4 Check the results on the outdoor unit 7‑segment display.
Completion
Normal completion
Abnormal completion
4
settings" [ 135]). The unit will start the check operation.
Description
Check ON
Precooling and preheating operations
Control before start-up (pressure equalisation)
Four way valve initial control
Heating start up
Misconnection assessment operation
Pumpdown
Restart standby
Stop
Description
Indoor unit is out of temperature range 20~27°C for leak
detection operation.
Outdoor unit is out of temperature range –5~43°C for
leak detection operation.
Too low pressure was noticed during leak detection
operation. Restart BS/indoor unit connection check.
Indicates an indoor unit is not compatible with this
function.
Description
" " on the 7‑segment display.
Indication of malfunction code on the 7‑segment display.
Refer to "22.7 Correcting after abnormal completion of
4
the test run" [ 153] to take actions for correcting the
abnormality. When the check is fully completed, normal
operation will be possible after 5 minutes.
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07