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EnergyFaults — error codes and troubleshooting for energy devices

Daikin Error Codes & Faults

Fault and warning codes recorded for Daikin devices, with meanings, severity and safe troubleshooting steps.

Popular Daikin error codes

A5Moderate

Daikin

Meaning pending official confirmation

September 2026View
E7Moderate

Daikin

Meaning pending official confirmation

September 2026View
Flashing operation lampModerate

Daikin

Potential malfunction detected

September 2026View
U0Moderate

Daikin

Meaning pending official confirmation

September 2026View
U2Moderate

Daikin

Meaning pending official confirmation

September 2026View
U4Moderate

Daikin

Meaning pending official confirmation

September 2026View
U5Moderate

Daikin

Connection error during system setup

September 2026View

Common Daikin problems

Not heating or coolingCommunication error
Browse all symptom guides

All Daikin fault codes

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7 codes shown