Daikin VRV-WIII RWEYQ72PTJU Service Manual page 94

Test Operation
3. When an Indoor Unit or Condensing Unit has been Added, or Indoor or condensing Unit PCB has been
Changed
Be sure to press and hold the RESET button for 5 seconds. If not, the addition cannot be recognized. In this case, the unit
cannot be run for up to 12 minutes to automatically set the address (indoor-condensing unit address, etc.)
Status
Condensing Test lamp H2P .... Blinks
unit
Can also be set during operation described above.
Indoor unit If ON button is pressed during operation described above, the "UH" or "U4" error
indicator blinks. (Returns to normal when automatic setting is complete.)
Caution When the 400 volt power supply is applied to "N" phase by mistake,
1.1.3 Check Operation
Be sure to conduct the check operation. If the check operation is not conducted, the error code "U3" will be displayed on the
remote controller, thus disabling the normal operation.
Through the following procedure, the check operation is automatically conducted. A period of approximately 20 minutes
(approximately 30 minutes at maximum) is required to complete the judgement.
Check Setting mode 1
Start the check operation.
Press and hold the TEST
OPERATION (BS4) button on the
condensing unit PCB for a period
of 5 seconds or more.
Completion of check operation
<Precautions for check operation>
· If the test operation is started within approximately 12 minutes after turning ON the power supply to the indoor and
86
replace the Inverter PCB (A2P) and control transformer (T1R) in switch
box together.
If the LED "H1P" turns OFF, the system is set to "Setting mode 1".
If the "H1P" turns ON or blinks, pressing the MODE button (BS1) will set
the system to "Setting mode 1".
The following check operation is automatically started.
1 Check the wrong wiring.
(
2 Check whether or not the stop valve is failed to open.
3 Check the refrigerant for overcharging.
4 Judge the piping length automatically.
*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 a period of approximately 10 minutes are
required for the compressor to start up, which, however, is not an error
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 (BS3)
button. 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)
SiUS30-1301
)
Check the error code
on the remote
controller and then
rectify the error
according to
information in the
"Troubleshooting".
Field Setting