Samsung AM032MNQDCH/AA Service Manual page 326

Troubleshooting
4-4-84 Model mismatching of Indoor unit.
Outdoor unit display
∙ Prior to July 2011, if the software version of the indoor unit.
Judgment Method
∙ Prior to July 2011, if the software version of the indoor unit.
∙ Check the software version of the indoor unit.
Cause of problem
∙ Check whether the support of the indoor unit.
1. Cause of problem
indoor unit become compatible with
Is software version of
indoor unit since July, 2011?
Replace indoor unit PCB
4-126
Power On
Does connected
DVM INV?
Yes
Yes
No
Replace the indoor unit that is
compatible with the DVM INV.
No
Software upgrade
Samsung Electronics