Daikin EA fault code
Daikin split air conditioning
What it means
Cooling / heating switching error
The manual's wording: cooling-heating switching error. The system cannot change over between modes — the 4-way valve isn't reaching its position, or the unit can't confirm that it has.
Safety: Safe isolation before testing the 4-way-valve coil — 230 V present at the coil.
UK models this code applies to
From the Daikin service literature we hold (Daikin CTXM/FTXM-M operation manual 3PEN393186-10J, malfunction-code table (remote self-diagnosis)) — not a scraped list.
Now the harder half: proving what caused it
EA names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.
Chase this code in the app →