Service manual

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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 controls
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
controls of other
units within the
same refrigerant
system.
NO
Refer to failure diagnosis for "UA"
malfunction code.
YES
The "UA" display
blinks on the remote
controls 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
controls of otherunits
within the same
refrigerant system.