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17.5.12 H33 (Unspecified Voltage between Indoor and Outdoor)
Malfunction Decision Conditions
The supply power is detected for its requirement by the indoor/outdoor transmission.
Malfunction Caused
Wrong models interconnected.
Wrong indoor unit and outdoor unit PCBs used.
Indoor unit or outdoor unit PCB defective.
Troubleshooting
When abnormality indication starts again
Is indoor unit and outdoor unit model numbers matched?
NO
Match the compatible model (follow specification)
Check indoor and outdoor units model number
Check the indoor and outdoor PCB part number and compare
if they matched part list.
Change for the specified indoor or outdoor unit PCB.
NO
YES
Replace the indoor and outdoor unit PCB.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Caution
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