Daikin VRV RXYQ72-384XAYCA Service Manual page 198

Field Settings for Outdoor Unit
[2-82]:
Change [2-82] to 0, 1, 2 or 3 in function of required limitation.
This setting is used in conjunction with setting [2-9].
When [2-82] is set to 0, the original refrigerant temperature target based on [2-9] is kept without
any correction, unless for protection control.
For more information and advice about the effect of these settings, refer to Energy Saving and
Optimum Operation on page 201.
[2-86]:
Note(s)
The setting of [2-86] = 2 saves energy but may increase the time required to reach set point.
[2-89]:
[2-90]:
191
Heating comfort setting for VRT control
Default value: 1.
Value
[2-82]
0
1 (default)
2
3
Optional setting to prioritize VRT control
Default value: 0.
Value
[2-86]
0 (default)
2
Intermittent fan operation
Default value: 0.
Used for intermittent fan operation to assist snow discharge on outdoor fan.
Value
[2-89]
0 (default)
1 30 minutes OFF, 1 minute ON with medium fan speed
2 30 minutes OFF, 1 minute ON with high fan speed
Indoor unit without power
U4 error generation.
In case an indoor unit needs maintenance or repair on the electric side, it is possible
to keep the rest of the VRV DX indoor units operating without power supply to some
indoor unit(s).
Default value: 0 (not active)
Field setting 1: It is possible to operate system without U4 error when some indoor
units are temporarily without power supply.
Field setting 2: It is possible to operate system with U4 warning when some indoor
units are temporarily without power supply.
Following conditions need to fulfil:
 Maximum equivalent piping length of the farthest indoor less than 120 m (394 ft).
 Index indoor units power simultaneously less than 30% of the nominal outdoor.
 Total capacity is less than 30% of the nominal one of the outdoor unit.
 Operation time is limited to 24 hours period.
 It is recommended to shut down connected indoor units at the same floor.
 Not possible to use service mode operation (e.g. recovery mode).
 Backup operation has priority over this special feature.
Heating comfort setting
Eco
Mild
Quick
Powerful
Level
Prioritize largest demand
Prioritize smallest demand
Intermittent fan operation
OFF
Part 5 Field Settings and Test Operation
SiUS342004EB