Daikin VRV III RXYQ5-54PY1 Service Manual page 165

Test Operation
NOTE:
• For check operation, the following work will be performed.
• It takes about 40 minutes to complete the check operation.
[Check Operation Procedure]
STEP1 Make the onsite setting as needed using the dip switches on the outdoor unit PC-board
STEP2 Close the EL. COMPO. BOX lid and all front panels except as the side of the EL.
STEP3 Check the LED display on the outdoor unit PC-board (A1P) is as shown in the table
LED display
(Default status of shipped)
LED display:
(*)How to distinguish the master unit, sub unit 1, and sub unit 2 in the multi system.
Method 1: By the H8P (MULTI) LED display
Method 2: By the transmission wiring to indoor unit
Transmission wiring is connected: Master unit
Transmission wiring is not connected : Sub unit 1 or Sub unit 2
STEP4 Make the onsite settings as needed using the push button (BS1-BS5) on the outdoor
STEP5 Perform the check operation following the Check Operation Method of the [Service
154
Check of shutoff valve opening
Check of miswiring
Judgment of piping length
Check of refrigerant overcharge
(A1P) with the power off (See "1.2.5.1 Onsite Settings With the Power Off")
COMPO. BOX and turn on the power to the outdoor unit and all connected indoor units.
(Be sure to turn the power on at least 6 hours before operation in order to have power
running to the crank case heater.)
below and transmission is normal.
SERV.
MONI-
TOR
HAP
Single system
Master unit
Multi
system Sub unit 1
(*)
Sub unit 2
...OFF, ...ON,
3 4 5
4 (ON): Master unit
unit PC-board (A1P) with the power on. (See "1.2.5.2 Onsite Settings With the Power
On")
Precautions] label on the EL. COMPO. BOX lid. The system operation for about 40
minutes and automatically stops the check operation.
If the malfunction code is not displayed in the remote controller after the system stop,
check operation is completed. Normal operation will be possible after 5 minutes. If the
malfunction code is displayed in the remote controller, correct the malfunction following
[Remote controller displays malfunction code] and perform the check operation again.
C/H SELECTOR
TEST/
MODE
HWL
IND
H1P H2P H3P
5 3 3 4
5 3 3 4
5 3 3 3
5 3 3 3
...Blinking
5 (Blinking): Sub unit 1
DEMA-
L.N.O.P
MASTE
ND
SLAVE
R
H4P H5P H6P H7P
3 3 3
3 3 3
3 3 3
3 3 3
3 (OFF): Sub unit 2
Test Operation
Si34-601A
MULTI
H8P
3 3
3 4
3 5
3 3