Troubleshooting for Outdoor Unit SiEBE18-526
320 Troubleshooting
7.25 Malfunction in other Indoor Unit or other BP Unit
Remote
Controller
Display
U9
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Malfunction of electronic expansion valve in other BP unit
Defect of PCB of other indoor unit or other BP unit
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(Q0386)
NO
Turn on all indoor units.
Replace the outdoor unit PCB.
Refer to failure diagnosis for the
malfunction code.
YES
The other
error code than "U9"
display blinks on the
remote controls of other
units within the same
refrigerant
system.
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