Daikin VRV Inverter K Series Manual page 334

SI-05C.BOOK Page 320 Monday, November 6, 2000 4:13 PM
Troubleshooting
3.24 Malfunction of System, Refrigerant System Address Undefined
U U U U H H H H
Remote Controller
Display
Supposed Causes
Troubleshooting
320
Improper connection of transmission wiring between indoor unit and outdoor unit, or outdoor and
outdoor unit
Defect of indoor unit PC board
Defect of function unit PC board
Is
electricity
being introduce for
YES
the first time after installation
or after an indoor or outdoor
unit PC board has
been replaced?
NO
Is indoor-outdoor and
NO
outdoor-outdoor unit
transmission wiring
normal?
YES
After fixing incorrect wiring, push
and hold the RESET button on the
outdoor unit PC board for 5
seconds.
NO
Does a malfunction occur?
YES
Does a
NO
"UH" malfunction occur
for all indoor units in
the system?
YES
Does
a malfunction
occur even after 12
NO
minutes elapses from the time
when electricity is introduced
to indoor and outdoor
units?
YES
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Troubleshooting PLUS Series
SiE-05C
Normal
After fixing incorrect wiring, push
and hold the RESET button on
the outdoor unit PC board for 5
seconds.
∗The unit will not run for up to
12 minutes.
Normal
Replace indoor unit PC board.
Replace function unit PC board.
(VF158)