Midea Aqua Tempo Super II Series Service Manual page 89

Aqua Tempo Super II
4.19 PU/FF Troubleshooting
4.19.1 Digital display output
4.19.2 Description
 1PU indicates fan module A protection.
 2PU indicates fan module B protection.
 FF indicates PU protection has displayed 2times. When a FF occurred 3 times in 20 minutes, a manual system restart
is required before the system can resume operation.
 All units stop running. The cause of an HH error should be addressed promptly in order to avoid system damage.
 Error code is only displayed on the main PCB and user interface.
4.19.3 Possible causes
 Switch SW1 incorrectly set.
 Power or communication wires not connected properly.
 Fan motor blocked or has failed.
 Power supply abnormal.
 AC filter board damaged.
 Fan module damaged.
 Inverter module PCB damaged.
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