Daikin VRV - WII Service Manual page 230

SiUS30-604
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the
outside units multi
connection transmission
wiring normal?
YES
Is the
indoor / outside unit
transmission wiring
normal?
YES
C/H SELECT is set to "IND".
NO
Cool / heat selection is
unified.
YES
C/H SELECT
is set to "MASTER".
NO
C/H SELECT
is set to "SLAVE".
NO
Troubleshooting by Indication on the Remote Controller
NO
NO
YES
NO
YES
Check
YES
and see if the following items
are normal.
External control adaptor for outdoor unit
•Is there continuity?
•Does the cool/heat unified address match?
Outside unit (unified master unit)
•Is there continuity?
•Does the cool/heat unified address match?
YES
Does a
malfunction occur when
the cool / heat selector is
set to "IND"?
YES
Fix the outside units multi
connection transmission
wiring and reset power.
Fix the indior / outside unit
transmission wiring.
Replace the outside unit PC
Board (A1P).
Set C/H SELECT to "IND".
The cool / heat unified
address for outside units in
outside - outside unit
transmission is duplicated.
Set the address correctly.
NO
Fix the problem.
NO
Replace the outside unit
outside control adaptor.
replacement
Replace the outside unit PC
board (A1P).
(V2824)
217