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Daikin / AURORA R-32

Daikin UF error code

UF is a multi-zone setup/configuration code. It means the system settings, BEV connection, or indoor-unit relationship are not set the way the controls expect.

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Urgency
advisory
Verified
Jul 30, 2026
Fix path
Technician

What it means

UF is a multi-zone setup/configuration code. It means the system settings, BEV connection, or indoor-unit relationship are not set the way the controls expect.

Urgency

advisory

This is not usually an immediate safety hazard, but do not keep resetting it. Try the safe homeowner check below; if the code comes back, schedule service.

Likely causes

  1. Indoor/outdoor communication wiring or terminal problem
  2. Loose low-voltage connector after service or vibration
  3. Power interruption during the control handshake
  4. Indoor or outdoor control board fault after wiring is verified

Homeowner fix

Turn the system off and do not swap wires or change field settings. Record which rooms are connected and whether installation or service happened recently.

When to call a pro

Call the installer or a licensed HVAC technician if UF appears. Tell them the MXM table points to unset system or incorrect BEV/indoor settings.

This code points to electrical or inverter work - get repair quotes from contractors in your area.

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Repair vs replace

UF is usually a setup or wiring correction, not a replacement signal. Replacement only enters the discussion if a control board or adapter is confirmed failed.

See Daikin mini-splits

Your Daikin model

AURORA R-32 model pages in the Daikin catalog help compare this repair path with current replacement options.

See Daikinmini-splits ->

Parts for this line

The parts catalog for Daikin AURORA R-32 lists 7 sourced replacement parts for this product line.

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For your technician

Technician note: verify port-to-indoor matching, BEV applicability, system addressing, field settings, and communication wiring before replacing parts. Page context: Daikin maps this display to the AURORA R-32 line; source: Daikin Nineteen, ATMOSPHERA, Entra, and MXM/MXT/MXTH local service manuals; display convention: match the letter U and letter F marker exactly before comparing neighboring codes.

Which systems show it

  • Daikin current US residential R-32 ductless single-zone systems, including AURORA R-32, ATMOSPHERA R-32, Entra R32, OTERRA R-32, and Nineteen-series style high-wall diagnostics where the same Daikin A/C/E/F/H/J/L/P/U code family is used.
  • Daikin concealed-duct/FDMQ indoor units where the Nineteen service manual explicitly lists the same indoor drain, fan PCB, remote-controller, and FDMQ-only C/U codes.
  • Daikin AURORA Multi R-32 and Standard Multi R-32 MXT/MXTH/MXM systems where the MXM engineering manual lists the same homeowner code table.
  • MXM/MXT/MXTH multi-zone systems for the additional multi-zone U-series and inverter/control codes specifically called out from the MXM manual.

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Your mini split is showing a refrigerant leak codeMini split indoor unit freezing upOne room won't heat or cool on a multi-zone mini split

Reset note

Turn the system off and do not swap wires or change field settings. Record which rooms are connected and whether installation or service happened recently.

Manual trigger

UF is a multi-zone setup/configuration code. It means the system settings, BEV connection, or indoor-unit relationship are not set the way the controls expect.

Related codes

UA error codeUHU9 error code00 status displayUF diagnostics

Source

Daikin MXM-A, MXT-A, MXTH-A Series Engineering Manual EDUS122402
Section
BRC944B2 operation, malfunction code table
Page
PDF pages 267-269

Short quote: "Malfunction code Error content"

Sourced Jul 2026

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