Troubleshooting for Outdoor Unit SiAU18-715
384 Troubleshooting
7.25 Faulty Combination of Inverter and Fan Driver
Remote
Controller
Display
PJ
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Check the communication state between inverter PCB and control PCB by micro-computer.
Malfunction
Decision
Conditions
When the communication data about inverter PCB type is incorrect.
Supposed
Causes
Mismatching of inverter PCB
Faulty field setting
Troubleshooting
∗
Refer to “Field Setting from Outdoor Unit” on P134.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Was the PCB
replaced?
Is the PCB type
correct?
Is the
field setting
when the PCB was
replaced
correct?
Replace the PCB.
Replace PCB by the
correct one.
After resetting, restart.
(Q0574)
YES
YES
NO
NO
Correct field setting.
NO
YES
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