Midea M-Thermal Series Service Manual page 57

M‐Thermal Split
4.11 H6, HH Troubleshooting
Digital display output
Description
 H6 indicates a DC fan error.
 HH indicates that H6 protection has occurred 10 times in 2 hours. When HH error occurs, a manual system restart is
required before the system can resume operation. The cause of HH error should be addressed promptly in order to
avoid system damage.
 M‐Thermal Split stops running.
 Error code is displayed on outdoor unit main PCB and user interface.
Possible causes
 DC fan wire is loosed.
 High wind speed.
 Fan motor blocked or has failed.
 Invert module damaged.
 Main PCB is damaged.
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