A962_O or A970_O: Inverter/Compressor Mismatch
On the VSODU, this will be indicated by a number 16 on the seven segment LED display
The Drive LED's will not indicate anything
This alarm means that a replacement memory card, drive or compressor was installed in the equipment. Please recheck model and serial number against parts list to make sure the right components are in the system. Each unit is looking for a specific drive and compressor.
