Tag: mismatched-indoor-outdoor-units

All the articles with the tag "mismatched-indoor-outdoor-units".

• Daikin UA Error Code — Mismatched Indoor/Outdoor Unit Fix

  21 May, 2026

  Daikin UA means the indoor PCB and the outdoor PCB compared model IDs over the F1/F2 link and decided they aren't a compatible pair. It's almost always a...