40MBDAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
31
DIAGNOSIS AND SOLUTION (CONT.)
FA (Communication error between indoor two chips Diagnosis and Solution)
Description: Indoor PCB main chip does not receive feedback from another chip.
Recommended parts to prepare:
• Indoor PCB
Troubleshooting
Shut o the power supply and
turn it on 2 minutes later.
Is it still displaying
the error code ?
YES
Replace the indoor main PCB .
The unit is operating normally . NO
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