Fujitsu AUYG07LVLA Design & Technical Manual page 350

EXAMPLE5
When connection destination does not match
Branch box 1 (Primary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor Indoor
unit 1 unit 2 unit 3
[Display (Check run ends)]
Switching
LED981 LED982
every 2
POWER ERROR
MODE
seconds
LED961 LED962
Branch box 1 Branch box 2
to
Indoor unit B Indoor unit A
[Coping process]
1) The wire connected to Terminal Indoor unit B of Branch box1(Primary) must be rewired to
Terminal Indoor unit A of Branch box 2(Secondary).
2) The wire connected to Terminal Indoor unit C of Branch box1(Primary) must be rewired to
Terminal Indoor unit B of Branch box 1(Primary).
3) The wire connected to Terminal Indoor unit A of Branch box2(Secondary) must be rewired
to Terminal Indoor unit C of Branch box 1(Primary).
4) The wire connected to Terminal Indoor unit C of Branch box3(Secondary) must be rewired
to Terminal Indoor unit A of Branch box 3(Secondary).
[After correcting wiring]
Branch box 1 (Primary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor Indoor
unit 1 unit 2 unit 3
Branch box 2 (Secondary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor Indoor
unit 4 unit 5 unit 6
Switching
LED981 LED982
every 2
POWER ERROR
MODE
seconds
LED961 LED962
Branch box 1 Branch box 1 Branch box 2
to
Indoor unit C Indoor unit B Indoor unit A
Switching every 2 seconds
Branch box 2 (Secondary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor Indoor
unit 4 unit 5 unit 6
- (06 - 102) -
Branch box 3 (Secondary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor
unit 7 unit 8
Switching
LED981 LED982
every 2
POWER ERROR
MODE
seconds
LED961 LED962 LED961
Branch box 1 Branch box 3
to
Indoor unit C Indoor unit C
Branch box 3 (Secondary)
INDOOR UNIT A INDOOR UNIT B INDOOR UNIT C
Indoor Indoor
unit 7 unit 8
LED981 LED982
POWER ERROR
MODE
LED962
Branch box 3
to
Indoor unit A
6. SYSTEM DESIGN