DAIKIN
Daikin Air Conditioner Troubleshooting
8 error codes with step-by-step fixes, safety warnings, and Amazon tool links.
8
Error codes
23 min
Avg. fix time
25%
Beginner-friendly
33
FAQs answered
About Daikin air conditioner error codes
This hub covers every Daikin air conditioner fault code we’ve documented — 8 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 25% are beginner-friendly fixes; the rest need basic tools and some mechanical comfort. The average fix takes about 23minutes. 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 3 of the 8 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 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 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
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.