I am trying to add a unit to my account, but the unit is already linked to another account. Please help?

You can disassociate units from (other) accounts by following the “Add unit” flow.

Mind that when you disassociate a unit from an (other) account, you can't control it anymore from that account.

From the "Unit already added" screen, tap the three dots and disassociate the unit.

daikin app another account