Gree U-Match 5 Series - “Ee” Drive Memory Chip Error; “C4” ODU Jumper Cap Error

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
87
3.4.37 “ee” Drive Memory Chip Error
Error display: ODU mainboard, IDU wired controller and IDU receiver light board will display ee
Error judgment condition and method:
If power is connected but the drive board with memory chip cannot detect the memory chip or read the
memory chip data correctly, then it can be judged that drive memory chip error exists.
Possible reason:
■The drive board that needs memory chip is not installed with the memory chip.
■The lead or connector of memory chip is badly welded or short-circuited.
Troubleshooting：
ee Drive memory chip error
Drive board is installed with
memory chip or not?
Install the
memory chip .
Replace the drive
board .
YES
NO
3.4.38 “c4” ODU Jumper Cap Error
Error display: ODU mainboard, IDU wired controller and IDU receiver light board will display c4
Error judgment condition and method:
If jumper cap model doesn‘t match with mainboard, report the error
Possible reason:
■Jumper cap is not installed
■Jumper cap model is wrong
■Detecting circuit is abnormal