Description: Incorrect combination of language file versions
Causes: Language file version did not match that of the main program.
Remedy: 1. Update the firmware
Code: E744-0002
Description: Language file error
Causes: The size of the language file exceeded the allowed size.
Remedy: 1. Update the firmware.
Code: E744-1001
Description: Version mismatch between BOOTABLE and BOOTROM
Causes: Version of the main program and that of the start-up program did not mach.
Remedy: 1. Update the firmware.
Code: E744-4000
Description: Invalid engine connection error
Causes: Invalid engine connection was detected.
Remedy: 1. Check if the valid Engine Controller PCB (UN1) is installed. 2. Update the firmware. 3. Replace the Engine Controller PCB (UN1).
Code: E744-5000
Description: Communication error between the Controller PCB and the Main Controller PCB
Causes: Communication with the Control Panel PCB could not be established.
Remedy: 1. Check the harness/connector between the Panel PCB (UN31) and the Main Controller PCB (UN30). 2. Replace the Control Panel (including the Panel PCB(UN31)). 3. Replace the Main Controller PCB (UN30).
Code: E744-6000
Description: Communication error with Wireless LAN PCB
Causes: Communication with the Wireless LAN PCB could not be established.
Remedy: 1. Turn OFF and then ON the main power. 2. Check the harness/connector connection between the Wireless LAN PCB (UN35) and the Main Controller PCB (UN30) 3. Install the set of the controller firmware. 4. Replace the Wireless LAN PCB (UN35). 5. Replace the Main Controller PCB (UN30).