Panasonic CS-E18SD3UAW service manual - Page 83

H33 Unspecified Voltage between Indoor and Outdoor

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15.5.12 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 Check indoor and outdoor units model number For safety reason and to prevent component breakdown, always switch Caution off the power before remove and connect the component. Is the indoor and outdoor unit model number matched? NO ● Match the compatible model (follow specification) Check indoor and outdoor PCB part number and compare if they matched part list. NO Change for the specified indoor or outdoor unit PCB. YES ● Replace the indoor and outdoor unit PCB. 83

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83
15.5.12
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
Check indoor and outdoor PCB part number and
compare if they matched part list.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Change for the specified indoor or outdoor unit PCB.
Check indoor and outdoor units model number
Is the indoor and outdoor unit model number matched?
YES
●
Match the compatible model (follow specification)
●
Replace the indoor and outdoor unit PCB.
NO
NO
Caution