Unit Error Code Definitions And Solutions: Codes [Er91 - Er99]; Error Code [Er91] - Mitsubishi Electric PUHY-HP200YNW-A Service Handbook

[7-10 Unit Error Code Definitions and Solutions: Codes [Er91 - Er99] ]

7-10 Unit Error Code Definitions and Solutions: Codes [Er91 -
Er99]
7-10-1

Error Code [Er91]

1. Error code definition
Firmware update error (outdoor unit)
2. Error definition and error detection method
The error code will be displayed when the outdoor unit fails to write the firmware update program.
3. Error source, cause, check method and remedy
Error source
Outdoor unit (1)
72
- chapter 7
Cause
Failure of the microcomputer or the flash
memory on the control board
Check method and remedy
Replacement of the control board
BS_07_L