DAIKIN
Daikin Air Conditioner Troubleshooting
11 error codes with step-by-step fixes, safety warnings, and Amazon tool links.
11
Error codes
24 min
Avg. fix time
27%
Beginner-friendly
45
FAQs answered
About Daikin air conditioner error codes
This hub covers every Daikin air conditioner fault code we’ve documented — 11 error codes with step-by-step fixes, safety warnings, and links to the exact tools on Amazon.in. Each guide is cross-referenced with the Daikin India service manual and verified against common failure patterns reported across Indian households.
Daikin air conditioner errors range from simple resets to intermediate-level repairs. About 27% are beginner-friendly fixes; the rest need basic tools and some mechanical comfort. The average fix takes about 24minutes. Every guide includes a “when to call a technician” section so you know exactly where the DIY boundary is.
The most common fault pattern across Daikin air conditioners in India is not cooling, accounting for 6 of the 11 error codes we cover. If your air conditioneris showing this symptom but you’re not sure which error code it is, browse the list below and match the description to your situation.
All error codes
Error A1 on a Daikin AC means the system has detected an internal fault on the indoor unit's main printed circuit board (PCB).
15 min · skill: intermediate
Error A3 on a Daikin AC indicates that the condensate drain system has failed — either the drain pump has malfunctioned, the drain pipe is blocked, or the condensate collection tray has overflowed.
30 min · skill: beginner
Error A5 on a Daikin AC is a protection trip, not a broken part.
40 min · skill: beginner
Error E1 on a Daikin air conditioner indicates a communication failure on the indoor unit's printed circuit board (PCB).
25 min · skill: intermediate
Error E5 on a Daikin AC indicates that the compressor's overload protection has activated.
30 min · skill: intermediate
Error E7 on a Daikin AC means the indoor unit's fan motor has stopped, stalled, or is not reaching the speed commanded by the PCB.
20 min · skill: intermediate
Error H6 on a Daikin inverter AC means the outdoor board has lost position-detection feedback from the inverter compressor — it can no longer sense the rotor's position, so it cannot drive the compressor.
15 min · skill: advanced
Error L3 on a Daikin AC indicates that the outdoor unit's electrical box or inverter components have reached a critically high temperature.
35 min · skill: intermediate
Error U0 on a Daikin AC indicates the refrigerant pressure in the system has dropped below the safe operating threshold.
10 min · skill: beginner
Error U4 on a Daikin AC indicates a communication failure between the indoor and outdoor units.
20 min · skill: intermediate
Error UF on a Daikin AC means the system has not finished pairing the indoor and outdoor units correctly — the wiring and refrigerant piping do not match up, or the interconnecting cabling and address setup are wrong, or the refrigerant charge is short.
20 min · skill: intermediate
Thinking of replacing your Daikin air conditioner?
If repair cost exceeds 50% of a new unit’s price, replacing is usually the smarter move. Compare top-rated air conditioners in India.