Daikin VRV - WII, Service Manual

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Troubleshooting by Indication on the Remote Controller SiUS30-604
220 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2826)
The “U4”
display blinks on
the remote controllers of
other units within the same
refrigerant
system.
Refer to failure diagnosis for “U5”
malfunction code.
Re-diagnose by display after
passage of 2 minutes or more.
NO
NO
Refer to failure diagnosis for “U4”
malfunction code.
YES
YES
“U9”
has been displayed for 2
minutes or more.
NO
Turn on all indoor units.
Refer to failure diagnosis for “A1”
malfunction code.
NO
YES
The “A1”
display blinks on
the remote controllers of
other units within the same
refrigerant
system.
Refer to failure diagnosis for “UA”
malfunction code.
YES
The “UA”
display blinks on the
remote controllers of other
units within the same
refrigerant
system.
Refer to failure diagnosis for “A9”
malfunction code.
NO
YES
The “A9”
display blinks on
the remote controllers of
other units within the same
refrigerant
system.