Common Error Codes
Error Code Malfunction Type Recommendation
E5
AC over current protection Restart the unit. If the error
does not clear, contact your
dealer or qualified service
technician.
E8 / H4
High temperature protection
H6
Indoor fan motor error
C5
Jumper cap malfunction protection
Contact your dealer or
qualified service technician.
F1
Indoor ambient sensor open or short circuit
F2
Indoor tube sensor open or short circuit
If other error codes are present, contact your dealer or qualified service technician.
If any of the following occurs, shut off the unit and contact your dealer or qualified service
technician:
• Power cord overheats or becomes damaged
• If you notice a burning smell
• The unit trips the breaker panel or cycles off frequently without obtaining the set
temperature
• Abnormal sound during operation
• If you notice water leakage
88-M4MHW15-1D-EN 37
Installer's Guide
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