Remedy: 1 Main PCB failure Replace the main PCB ASSY.
Code: EC
Description: Fan performance malfunction
Causes: Harness connection failure of fan motor. Fan motor failure. Main PCB failure.
Remedy: 1 Harness connection failure of fan motor Check the harness connection of the fan motor, and reconnect it. 2 Fan motor failure Replace the fan motor. 3 Main PCB failure Replace the main PCB ASSY.
Code: F8
Description: Battery connection failure
Causes: Battery harness connection failure. Battery exhausted. Main PCB failure.
Remedy: 1 Battery harness connection failure Reconnect the battery harness. 2 Battery exhausted Replace the battery. 3 Main PCB failure Replace the main PCB ASSY.
Code: F9
Description: Maintenance mode 74 Non-decision (Inputting omission of the customizing code.)
Causes: Turn the power off, when the Maintenance mode 74 is in progress.
Remedy: 1 Turn the power off, when the Maintenance mode 74 is in progress. Implement the Maintenance mode 74 again.