Daikin VRV III REYQ8PY1 Service Manual page 172

Si37-701
[Refrigerant Charging Operation Procedure]
STEP 1 Open the liquid pipe, suction gas pipe, HP/LP gas pipe and equalizer pipe shutoff
STEP 2 • Close the EL. COMPO. BOX lid and all front panel except on the side of the EL.
(*1) Lead the refrigerant charge hose etc from the pipe intake. All front panels must be closed
(*2) • If you perform the refrigerant charging operation within the refrigerant system that have
Table : Display of normal system
(Default status of shipped)
LED display:
(*) How to distinguish the master unit, slave unit 1, and slave unit 2 in the multi system.
Method 1 : By the H8P (MULTI) LED display
k (ON) : Master unit
Method 2 : By the transmission wiring to indoor unit
Transmission wiring is connected : Master unit
Transmission wiring is not connected : Slave unit 1 or Slave unit 2
STEP 3 Charge the remained refrigerant by additional refrigerant charging operation of
STEP 4 Close the valve A if the "additional charging amount" of refrigerant was charged, and
Test Operation
valves (The valve A~C must be closed. The valve A~C means the valves in the figure
of REYQ8~16PY1 on page 159.)
COMPO. BOX (*1) and turn the power to the outdoor unit and all connected indoor
units. (*2)
• After H2P stop blinking (about 12 minutes after turning on the power), check LED
displays as shown in 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
chapter 1.2.5.2.2.
at the procedure (3).
the power off unit, the operation cannot finish properly.
For confirming the number of the outdoor and indoor units with the power on, see [How
to check how many units are connected] in chapter 1.2.5.1. 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.
SERV.
MONITOR MODE
LED display
HAP
Single system
Master unit
Multi
system Slave unit 1
(*)
Slave unit 2
h k
...OFF, ...ON,
l (Blinking) : Slave unit 1 7 (OFF) : Slave unit 2
service mode.
About the method of additional refrigerant charging operation, refer to the [Service
Precaution] labe (lower) attached on the EL. COMPO. BOX lid of the outdoor unit.
EL. COMPO.BOX lid
push the RETURN button (BS3) once.
C/H SELECTOR
TEST/
HWL
IND MASTER SLAVE
H1P H2P H3P
l h h k
l h h k
l h h h
l h h h
l
...Blinking
Inspection door
[Service Precaution] label (upper)
[Service Precaution] label (lower)
Test Operation
L.N.O.P DEMA-ND MULTI
H4P H5P H6P H7P
h h h h
h h h h
h h h h
h h h h
H8P
h
k
l
h
161