Description: Software write parameter setting error
An unstable area at the storage destination in the settings table is set at NULL for the parameter received by the write module.
Causes: Download controller firmware again
Code: 990
Description: Software performance error
The software attempted to perform an unexpected operation.
Causes: • Software defective • Internal parameter incorrect • Insufficient working memory • When this SC occurs, the file name, address, and data will be stored in NVRAM. This information can be checked by using SP7-403. Note the above data and the situation in which this SC occurs. Then report the data and conditions to your technical control center.
Code: 991
Description: Software continuity error
The software attempted to perform an unexpected operation. However, unlike SC990, the object of the error is continuity of the software.
Causes: • No operation required. This SC code does not appear on the panel, and is only logged.
Code: 996
Description: FCU board error
FCU board is connected but not ready.