F93 - Compressor abnormal revolution.
Panasonic lists F93 as compressor abnormal revolution in the self-diagnosis table for inverter air conditioners.
Applied here to Wall-Mounted Standard Inverter R32 MPU multi-split models, but Panasonic says exact code support and interpretation can vary by operating instructions.
Severity
High
Display
Displayed as F93 by the self-diagnosis function on compatible Panasonic inverter air conditioners.
Support first?
Often not
Models in range
CS-MPU9YKZ, CS-MPU12YKZ, CS-MPU18YKZ
What to do first
Start with these checks
- 1Stop operation if the code remains active.
- 2Record the exact code and check the operating instructions for the installed model.
- 3Arrange qualified service before continued operation.
Likely causes
What usually sits behind this code
The compressor is not revolving normally.
The system has detected abnormal compressor speed or rotation behavior.
Contact support
Contact customer support if any of these apply
- !The code returns after restart.
- !The outdoor unit sounds abnormal or cooling does not stabilize.
- !Compressor-system diagnosis is needed.
- - Panasonic's self-diagnosis article says to note the code and contact a qualified service technician for inspection, troubleshooting, and repairs.
- - Compressor-related codes should be treated as service issues rather than routine upkeep.
Related codes
Nearby codes in this family
More ranges
More Panasonic air-conditioner ranges
Source notes
Source and scope
Source: Panasonic Cambodia HVAC
Panasonic's official self-diagnosis page lists F93 as 'Compressor abnormal revolution'.
Last reviewed: 2026-04-19
Panasonic says the self-diagnosis function is for identifying potential malfunctions. Repairs and complex troubleshooting should be handled by a qualified service technician.