Daikin Sky Unit Feild Setting (22) 4-09

Hi,
I am wanting to know what the above setting is. In some of the newer sky models I am seeing, this is the factory default. I know this section of the field codes normally related to dead band. Some playing around seems to indicate that Setting (22) 4-09 is the same as 4-03 but the controller display does not change by 2deg when the modes change.
Am I close?

What is the model number?

Hi laf100,
Model is an FFQ50BVV1B - but I have seen the same codes in FCQ's (round flow) and FDYQ's.

The model number of one such example is FCQ100K