Daikin VRV II RXYQ5MATL, Service Manual, Page: 136 / 331

Si39-504 Field Setting
Test Operation 125
For setting items of (*1), refer to detailed information provided on page 136 onward.
Setting item Content and objective of setting Overview of setting procedure
Serv
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e s
e
tti
ng
1
Indoor unit fan
forced H operation
„
Used to operate the indoor unit in the
stopped state in forced H operation mode.
„
Set No. 5 of "Setting mode 2" to indoor unit
forced fan H.
2
Indoor unit forced
operation
„
Used to operate the indoor unit in forced
operation mode.
„
Set No. 6 of "Setting mode 2" to indoor unit
forced operation mode.
3
Change of targeted
evaporating
temperature
(in cooling)
„
In cooling operation, used to change the
targeted evaporating temperature for
compressor capacity control.
„
Select high side or low side with No. 8 of
"Setting mode 2".
4
Change of targeted
condensing
temperature
(in heating)
„
In heating operation, used to change the
targeted condensing temperature for
compressor capacity control.
„
Select high side or low side with No. 9 of
"Setting mode 2".
5
Setting of defrost
selection
„
Used to change a temperature at which the
defrost operation is initiated, thus making
the initiation easy or hard.
„
Select fast side or slow side with No. 10 of
"Setting mode 2".
6
Setting of
sequential startup
„
Used to start units not in sequence but
simultaneously.
„
Set No. 11 of "Setting mode 2" to NONE.
7
Emergency
operation (*1)
„
If the compressor has a failure, used to
prohibit the operation of compressor(s)
concerned or outdoor unit(s) concerned
and to conduct emergency operation of the
system only with operable compressor(s)
or outdoor unit(s).
„
Make this setting while in "Setting mode 2".
For system with a single outdoor unit: Set
with No. 19 or 42.
For system with multiple outdoor units: Set
with No. 38, 39, or 40.
8
Additional
refrigerant
charging (*1)
„
If a necessary amount of refrigerant cannot
be charged due to the stop of outdoor unit,
operate the outdoor unit and then refill
refrigerant.
„
Set No. 20 of "Setting mode 2" to ON and
then charge refrigerant.
9
Refrigerant
recovery mode (*1)
„
Used to recover refrigerant on site.
With operations of indoor and outdoor units
prohibited, fully open the expansion valve
of the indoor and outdoor units.
„
Set No. 21 of "Setting mode 2" to ON.
10
Vacuuming mode
(*1)
„
Used to conduct vacuuming on site.
Fully open the expansion valves of the
indoor and outdoor units, and energize part
of solenoid valves. Use a vacuum pump to
conduct vacuuming.
„
Set No. 21 of "Setting mode 2" to ON.
11
ENECUT test
operation
„
Used to forcedly turn ON the ENECUT.
(Be noted this mode is not functional with
the indoor unit remote controller turned
ON.)
„
Set No. 24 of "Setting mode 2" to ON.
12
Power transistor
check mode
„
Used for the troubleshooting of DC
compressors.
Inverter waveform output makes it possible
to judge whether a malfunction results from
the compressor or the PC board.
„
Set No. 28 of "Setting mode 2" to ON.
13
Setting of model
with spare PC
board
„
In order to replace the PC board by a spare
one, be sure to make model setting.
„
For this setting, set the DS2-2, -3, and-4
switches on the PC board to the model
concerned.