2.24 P9, H9: Fan module protection
Digital display output
Description
 Fan module protection.
 All units stop running.
 Error code is displayed on the unit with the error.
Trigger / recover condition
 Trigger condition:
For P9 protection: Fan speed is too low.
For H9 protection: P9 protection appears ten times in 120 minutes.
 Recover condition: Fan speed go back to normal.
 Reset method:
For P9 protection: Resume automatically;
For H9 protection: Manually restart.
Possible causes
 Switch ENC2 incorrectly set.
 Power or communication wires not connected properly.
 Fan motor blocked or has failed.
 Power supply abnormal.
 Fan module damaged.
 Outdoor main PCB damaged.
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