Daikin VRV III REYQ8PY1, Service Manual

Page: 172 / 452

Si37-701 Test Operation
Test Operation 161
[Refrigerant Charging Operation Procedure]
STEP 1 Open the liquid pipe, suction gas pipe, HP/LP gas pipe and equalizer pipe shutoff
valves (The valve A~C must be closed. The valve A~C means the valves in the figure
of REYQ8~16PY1 on page 159.)
STEP 2 • Close the EL. COMPO. BOX lid and all front panel except on the side of the EL.
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.
(*1) Lead the refrigerant charge hose etc from the pipe intake. All front panels must be closed
at the procedure (3).
(*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 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.
Table : Display of normal system
LED display:
h
...OFF,
k
...ON,
l
...Blinking
(*) How to distinguish the master unit, slave unit 1, and slave unit 2 in the multi system.
STEP 3 Charge the remained refrigerant by additional refrigerant charging operation of
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.
STEP 4 Close the valve A if the “additional charging amount” of refrigerant was charged, and
push the RETURN button (BS3) once.
LED display
(Default status of shipped)
SERV.
MONITOR
MODE
TEST/
HWL
C/H SELECTOR
L.N.O.P DEMA-ND MULTI
IND MASTER SLAVE
HAP H1P H2P H3P H4P H5P H6P H7P H8P
Single system
l h h k h h h h h
Multi
system
(*)
Master unit
l h h k h h h h k
Slave unit 1
l h h h h h h h l
Slave unit 2
l h h h h h h h h
Method 1 : By the H8P (MULTI) LED display
k
(ON) : Master unit
l
(Blinking) : Slave unit 1
7
(OFF) : Slave unit 2
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
EL. COMPO.BOX lid
Inspection door
[Service Precaution] label (upper)
[Service Precaution] label (lower)