Daikin RXYQ5-48MAY1, Service Manual

Page: 246 / 352

Si39-407 Troubleshooting by Indication on the Remote Controller
Troubleshooting 235
Troubleshooting
(V2824)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
Replace the outdoor unit PC
Board (A1P).
YES
C/H SELECT is set to "IND".
Cool / heat selection is
unified.
C/H SELECT
is set to "MASTER."
NO
C/H SELECT
is set to "SLAVE."
YES
NO
Check
and see if the following items
are normal.
NO
Does a
malfunction occur when
the cool / heat selector is
set to "IND?"
YES
Set C/H SELECT to "IND."
YES
Fix the outdoor units multi
connection transmission
wiring and reset power.
NO
Is the
outdoor units multi
connection transmission
wiring normal?
Is the
indoor / outdoor unit
transmission wiring
normal?
NO
YES
Fix the indior / outdoor unit
transmission wiring.
The cool / heat unified
address for outdoor units in
outdoor - outdoor unit
transmission is duplicated.
Set the address correctly.
YES
NO
NO
YES
YES
Replace the outdoor unit
outside control adaptor.
replacement
Replace the outdoor unit PC
board (A1P).
Outdoor unit outside control adaptor
•
Is there continuity?
•
Does the cool/heat unified address match?
Outdoor unit (unified master unit)
•
Is there continuity?
•
Does the cool/heat unified address match?
Fix the problem.