Daikin mini split error code EA

Common causes

• A stuck reversing valve.
• A failed solenoid coil or wiring.
• Low charge.

How to fix it yourself

Do the reset and the visual checks, but the underlying repair needs a technician with a meter and the service manual.

1. Reset the system: switch the breaker (or the outdoor disconnect) off, wait a full five minutes so the boards fully discharge, then switch it back on and restart from the remote.
2. Switch between Cool and Heat and listen for the valve shifting at the outdoor unit.
3. With power off, check the solenoid coil plug is seated.
4. Anything inside the refrigerant circuit (sensors are fine, but valves, compressors and leaks are not) needs EPA-certified refrigerant handling. That is a technician job.

Switch off power at the breaker before opening either unit. Capacitors in the outdoor unit hold a charge for several minutes after power is cut.

When to call a technician

Valve replacement is a technician job.

Which Daikin units show EA

This page applies to Daikin Aurora, 19 Series, Atmosphera, Emura, Quaternity and MXS multi-zone units. Daikin's own documentation lists EA as "Four-way (reversing) valve switching fault", the same definition used across the Daikin it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.

Where Daikin shows this code

Most Daikin wall units do not show the code on the unit; the operation lamp blinks. To read the code, point the remote at the unit, hold CANCEL (or Timer Cancel) for about 5 seconds until 00 shows, then press CANCEL repeatedly. Each press shows a code; when the unit gives a long continuous beep instead of two short beeps, the code on the remote is the stored fault. Units with a wired controller show the code directly. A and C codes are indoor-unit faults, E, F, H, J, L and P codes are outdoor-unit faults and protections, and U codes are system-level problems such as communication, power supply and refrigerant shortage.

Other Daikin codes

Same part of the system as EA:

All Daikin error codes

EA on other brands

The same characters do not always mean the same thing. Check the brand on your unit.

• Zone Air EA Outdoor current sensor test fault
• Mitsubishi Electric EA Miswiring between indoor and outdoor units, or too many indoor units
• Trane EA Outdoor current sensor test fault / Miswiring between indoor and outdoor units, or too many indoor units
• Goodman EA Four-way (reversing) valve switching fault