Daikin VRV EMERION REYQ-AATJA, Service Manual

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Field Setting from Outdoor Unit SiUS372201EB
265 Part 5 Field Settings and Test Operation
Note(s)
In high humid areas, it is recommended to keep this setting to 0 or 1.
[2-90]: 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.
[2-92]: Te target temperature upper limit
Default value: 1.
Value
[2-92]
Te target temperature upper limit
0 L
1 (default) M
2 H
If Auto Te, then use this setting to address different load profiles. If the frequent operation is at
lower system load, then use a higher setting under [2-92].