If your remote IR is confirmed working (phone camera flash test) but the AC unit still does not respond, the problem is on the AC side — not the remote.
Data Verified: 2026Fix 1 — Clean the IR sensor: Wipe the small dark window on the AC front panel with a dry cloth. Dust on the sensor is the most common cause of a working remote being ignored. Fix 2 — Improve signal angle: Stand directly in front of the indoor unit within 3 metres. Some AC sensors have a narrow reception angle and miss signals sent from the side.
Fix 3 — Check for interference: Fluorescent lights, sunlight, and other IR devices (TV remotes, set-top boxes) can interfere with AC signal reception. Turn off other devices temporarily and test. Fix 4 — Power cycle the AC: Turn off the AC from the mains switch, wait 30 seconds, turn back on. A firmware hang can cause the AC to stop responding to remote commands.
Fix 5 — Check manual panel: Try operating the AC from the manual panel buttons on the indoor unit. If manual buttons work but remote does not, the IR receiver has failed and needs replacement by a technician. Cost: ₹300–600 including parts.
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Why does my AC not respond to its own remote?
Most likely: dirty IR sensor on the AC, signal angle issue, or interference from other light sources. Clean the sensor and test directly in front of the unit at 1 metre.
What is the IR sensor on AC and where is it?
A small dark-tinted plastic window on the front of the indoor unit, usually bottom-right. It receives signals from your remote. Dust or grime on this window blocks reception.
Can I repair the AC IR receiver myself?
The sensor itself is a small inexpensive component, but replacement requires opening the front panel and some electronics knowledge. Most prefer calling a technician (₹300–600 total cost).
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