Daikin R71FUV1 Service Manual page 420

Troubleshooting by Remote Controller
Troubleshooting
Caution
Is
there
any broken
wire or erroneous
wire connection in the
communication wiring
of multi outdoor
unit system?
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
A
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
YES
Check
and see if the
following items are
normal.
B
Si20-701_B
Fix the outdoor
units multi
connection
transmission
wiring and reset
power.
Replace the
outdoor unit PCB
(A1P).
Set C/H SELECT
to "IND."
The cool / heat
unified address
for outdoor units
in outdoor -
outdoor unit
transmission is
duplicated. Set
the address
correctly.
NO
Fix the problem.
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