Daikin VRV - WII, Service Manual

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Troubleshooting by Indication on the Remote Controller SiUS30-604
214 Troubleshooting
Troubleshooting
(V2822)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is
indoor - outside unit
and outside unit - outside unit
transmission wiring
normal?
Supply 208~230 V.
Replace the fuse.
Fix the indoor/outside unit
transmission wiring.
Push and hold the RESET
button on the outside unit PC
board for 5 seconds.
Replace the outside unit PC
Board (A1P).
YES
YES
NO
YES
Replace the indoor unit PC
Board.
Push and hold the RESET
button on the master outside
unit PC Board for 5 seconds.
Fix the indoor/outside unit
transmission wiring.
YES
NO
NO
YES
Has
the indoor
or outside unit PC
board been replaced,
or has the indoor - outside
or outside - outside unit
transmission wiring
been
modified?
All
indoor unit
remote controllers of the
same refrigerant system
display
“U4”.
NO
Outside
unit PC board
microcomputer monitor
(HAP) blinks.
NO
NO
NO
Operation
ready lamp (H2P) is
blinking.
Lamp does
not go off for 12 minutes
or more.
Is indoor
- outdoor and outside -
outside unit transmission
wiring normal?
YES
The fuse on
the outside unit’s PC
board is burnt.
Replace the transformer.
replacement
Replace outside unit PC
board. (A1P)
NO
The
secondary voltage
of the transformer is
about 22 V.
NO
The
voltage between
terminals L1, L2 and L3
of X1M terminal
is 208~230 V.
∗
The unit will not operate for
up to 12 minutes.
Reset the power supply.
YES
YES
YES
NO
YES