Daikin Split System and Ducted Error Codes

How Daikin Split System and Ducted Error Codes Read

Daikin gives each fault a two-character code (U4, A6, EA). On a split system with a wireless remote, the indoor unit’s OPERATION lamp blinks when there is a fault, and the remote’s fault diagnosis finds the code. On a Sky Air ducted or cassette unit, the wired controller shows the code, and a wireless controller finds it in inspection mode.

The two lists share many codes, and the wording can differ between them: C4 is the indoor heat exchanger thermistor on a split system and the liquid pipe thermistor for the heat exchanger on Sky Air. The System column in the list below tells you which is which.

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Reading the Code on Each Controller

Split systems: fault diagnosis on the remote

When the indoor unit’s OPERATION lamp keeps blinking, read the code with the wireless remote:

1. Hold Cancel for about 5 seconds. 00 blinks in the temperature display.
2. Press Cancel repeatedly until the unit gives a long, continuous beep. The code on the display is the fault code.
3. A short beep, or two short beeps, means the code on the display is not the stored one: keep pressing.
4. To finish, hold Cancel for about 5 seconds. The code display also clears after 1 minute with no button pressed.

Daikin’s manuals ask that the problem is understood and fixed before the code is reset, by a licensed installer or your local dealer.

Sky Air: wired controller (BRC1E)

When a fault stops the system, the controller’s green operation lamp blinks and “Error: Press Menu button” blinks at the bottom of the screen. A warning keeps the system running, with the lamp on and “Warning: Press Menu button”. Press Menu, as the message asks, to bring up the code. The troubleshooting section of Daikin’s service manual lists the Sky Air codes with a two-digit sub-code (A3-00), shown in the last column of the list below.

To see earlier codes, hold Cancel for 4 seconds or more on the basic screen to open Service Settings, then choose Error History. RC Error History lists the last 10 codes with the unit number, date and time; Indoor Unit Error History lists the last 5 for each indoor unit.

Sky Air: wireless controller

If the unit stops on a fault, the indoor unit’s operation LED flashes. The wireless controller (BRC7 series) finds the code in inspection mode:

1. Press INSPECTION/TEST. “Unit” shows and the unit number flashes 0.
2. Press UP or DOWN to step through the unit numbers until the indoor unit beeps. A continuous beep at this step means no fault on that unit.
3. Press MODE. The left (upper) digit of the code flashes. Press UP or DOWN until the unit gives two short beeps (upper digit matched) or a continuous beep (whole code matched).
4. Press MODE again. The right (lower) digit flashes. Press UP or DOWN until the continuous beep. The code on the display is the fault code.

Pressing MODE again, or leaving the controller for 1 minute, returns it to normal.

Daikin Split System and Sky Air Error Code List

Search by code or keyword, or type Split or Sky Air to see one list. The split system codes are from the Zena FTXJ-T2 manual, the newest and longest of the three Australian lists; the Sky Air codes are from the ESIE17-08 service manual, with its two-digit sub-code. J1 and L4 come from the same manual’s table of codes read on the outdoor unit circuit board LEDs, which gives no sub-code.

Sources

The code meanings and controller steps in this guide are drawn from Daikin Australia’s operation manuals and Daikin Europe’s Sky Air service manual.

• Daikin Australia, Zena Split System Operation Manual, FTXJ25-60T2VMAW and T2VMAK (booklet 3P705032-1), 7-2 “Solving problems based on error codes”
• Daikin Australia, Zena Split System Operation Manual, FTXJ25-50PVMAW and PVMAS (booklet 3P369488-1), “Fault diagnosis by remote controller”
• Daikin Australia, XL Series Split System Operation Manual: FTXM85/95PAVMA and FTKM85/95PAVMA (booklet 3P552666-7B) and FTXV85/95LVMA (booklet 3P552666-10D), “Fault diagnosis by remote controller”
• Daikin Europe, Service Manual ESIE17-08, R32 Sky-Air RZAG-M (version 1.1, August 2018), “Error codes check” and “Error based troubleshooting”
• Daikin Australia, “Understanding Symbols on Daikin Controllers” (FAQ)

Daikin fault codes: frequently asked questions