SiEBE18-526 Troubleshooting for Outdoor Unit
Troubleshooting 321
7.26 Mismatching of Indoor Unit, BP Unit and Outdoor Unit
Remote
Controller
Display
UA
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Defect of outdoor unit PCB (A1P)
Mismatching of the refrigerant type of indoor and outdoor unit.
Setting of outdoor PCB was not conducted after replacing to spare parts PCB.
Troubleshooting
∗ The number of indoor units that can be connected to a single outdoor unit system depends on
the type of outdoor unit.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(Q0402)
Normal
NO
Push and hold the RESET
button on the outdoor unit PCB
for 5 seconds.
YES
Doesa malfunction occur?
Replace BP unit PCB or outdoor
unit PCB (A1P).
Matches the refrigerant type of
indoor BP and outdoor unit.
NO
YES
Does the
refrigerant type of BP
and outdoor unit
match?
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