Daikin Error Codes & Diagnostic Codes

Updated October 13, 2026 · by Aurora Star Tech Inc.

Daikin error codes and diagnostic codes: look up a code to see what it means, the likely causes and the steps to fix it.

Daikin error codes by equipment type

Daikin Furnace error codes

Code	Meaning
E10	Grounding fault / poor neutral connection
E11	Flame rollout switch open
EAF	R-32 sensor communication lost - mitigation mode
EAL	R-32 refrigerant leak detected - mitigation mode
EAr	A2L relay fault - mitigation mode
EAS	R-32 sensor fault - mitigation mode
EbL	Low circulator current - hard lockout
EbU	Unexpected circulator current - hard lockout
EE0	Lockout - too many ignition retries (3)
EE1	Pressure switch closed at start of heating cycle
EE2	Pressure switch did not close (inducer runs, no ignition)
EE3	High (primary) limit open
EE4	Flame sensed with no call for heat
EE5	Open fuse (short in low voltage wiring)
EE6	Low flame signal
EE8	High-stage pressure switch closed at start of heating cycle
EE9	High-stage pressure switch did not close
EEA	Reversed line polarity or grounding error
EEb	External gas valve error - valve not energized when it should be
EEC	Internal gas valve error - valve energized when it should not be
EEE	Internal control fault (IRQ loss)
EEH	Twinning error
EEJ	Inducer relay error
EEL	Igniter relay / igniter circuit fault
EEn	Igniter open

Find codes by Daikin model

DD96TN0403BN DD96TN0603BN DD96TN0803BN DD96TN1005CN DR96TN0303AN DR96TN0403AN DR96TN0603AN DR96TN0603BN DR96TN0803BN DR96TN0804CN DR96TN1004CN DR96TN1005CN DR96TN1205DN

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.

Daikin error codes by equipment type

Daikin Furnace error codes

Find codes by Daikin model

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