Daikin ERQ Series Service Manual page 115

Test Operation
[Refrigerant Charging Operation Procedure]
STEP1 Open the liquid and gas side shutoff valves (The valve A~C must be closed. The valve
[Display of normal system]
LED display
(Default status of shipped)
LED display: ...OFF,
STEP2 If necessary, set the field setting by using the dip switch on the outdoor unit PC-
STEP3 • Close the EL. COMPO. BOX lid and all front panel except on the side of the EL.
STEP4 Start the additional refrigerant charge operation.
STEP5 Close the valve A if the "additional charging amount" of refrigerant was charged, and
STEP6 Record the charging amount on the accessory "REQUEST FOR THE INDICATION"
5. After completing the additional refrigerant charging perform the check operation following
106
A~C means the valves in the figure 33.)
SERV.
MONI-
TOR
HAP
Single system
...ON, ...Blinking
board(A1P).
COMPO. BOX (*1) and turn the power to the outdoor unit and all connected AHU. (*2)
• After H2P stop blinking (about 12 minutes after turning on the power), check LED
displays as shown in the table [Display of normal system] and the system is normal
state.
If H2P is blinking, check the malfunction code in the remote controller, and correct the
malfunction in accordance with [Remote controller display malfunction code] in page
108.
(*1) Lead the refrigerant charge hose etc from the pipe intake. All front panels must be
closed at the procedure (9).
(*2) • If you perform the refrigerant charging operation within the refrigerant system that
have
the power off unit, the operation cannot finish properly.
For confirming the number of the outdoor and AHUs with the power on, see
[How to check how many units are connected] in chapter 1.2.4.1. In case of a multi
system,
turn on the power to all outdoor units in the refrigerant system.
• To energize the crankcase heater, make sure to turn on for 6 hours before starting
operation.
(About the system settings for additional refrigerant charge operation, refer to the
[Service Precaution] label attached on the EL. COMPO. BOX lid in the outdoor unit.)
Open valve A immediately after starting the compressor.
push the RETURN button (BS3) once.
label and attach it to the back side of the front panel.
below
C/H SELECTOR
MODE TEST/
MASTE
HWL
IND
H1P H2P H3P H4P
ESiEN09-06 A
L.N.O.P DEMA-
ND
SLAVE
R
H5P H6P H7P
Test Operation
MULTI
H8P