Daikin R-410A Service Manual page 169

SiBE39-402A
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
"U9" has
YES
been displayed for 2
minutes or more.
NO
Turn on all indoor units.
The "UA"
display blinks on the
YES
remote controllers of other
units within the same
refrigerant
system.
NO
The "A1"
display blinks on
YES
the remote controllers of
other units within the
same refrigerant
system.
NO
The "A9"
display blinks on the
YES
remote controllers of
other units within the
same refrigerant
system.
NO
The "U4"
display blinks on the
YES
remote controllers of
other units within the
same refrigerant
system.
NO
Troubleshooting by Indication on the Remote Controller
Re-diagnose by display after
passage of 2 minutes or more.
Refer to failure diagnosis for "UA"
malfunction code.
Refer to failure diagnosis for "A1"
malfunction code.
Refer to failure diagnosis for "A9"
malfunction code.
Refer to failure diagnosis for "U4"
malfunction code.
Refer to failure diagnosis for "U5"
malfunction code.
(V2826)
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