Error code is displayed on the unit with the error.
Trigger / recover condition
Trigger condition: Outdoor unit address is set more than 2.
Recover condition: Outdoor unit addresses are set from 0 to 2.
Reset method: Manually restart.
Possible causes
Invalid outdoor unit address.
Outdoor main PCB damaged.
Procedure
The ODU's address is not in the valid
Replace the outdoor main PCB
Notes:
1.
The master unit address should be set as 0, slave units' addresses should be set from 1 to 2, and the addresses should not be repeated within one system.