Daikin Furnace: Run the R-32 leak function test (A2u)
Run the R-32 leak function test (A2u) on a Daikin furnace: Simulates an R-32 leak so you can check the furnace response; it only works when no alarm or fault is active.
Applies to: Daikin DR96TN/DD96TN two-stage furnaces
How to fix run the r-32 leak function test (a2u): step by step
- Press the left or right switch until A2u shows
- Press the center switch, choose yes with the left or right switch
- Press the center switch to confirm and start the test
- Select no in the same menu to stop it early
If the unit shows an error code, look it up: Daikin Furnace codes
Models
DD96TN0403BNDD96TN0603BNDD96TN0803BNDD96TN1005CNDR96TN0303ANDR96TN0403ANDR96TN0603ANDR96TN0603BNDR96TN0803BNDR96TN0804CNDR96TN1004CNDR96TN1005CNDR96TN1205DN
Source: Daikin DR96TN-DD96TN service RSD6612304 (05-2024), R-32 Information - A2L Verification p.10. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.