Lloyd AC Error Code F3 — What It Means & How to Fix It

What Does This Error Mean?

F3 on a Lloyd AC means the outdoor coil temperature thermistor has a fault. This sensor monitors the condenser coil temperature to protect the compressor during operation. Lloyd disables cooling when F3 is active to prevent compressor overheating.

Affected Models

Lloyd Inverter Split AC (all capacities)
Lloyd 3 Star Inverter
Lloyd 5 Star Inverter
Lloyd GLS series
Lloyd LS series Inverter

Common Causes

Outdoor thermistor failed — internal resistance has drifted out of the acceptable range
Thermistor wire broken or short-circuited inside the outdoor unit
Connector at the outdoor PCB has become loose or corroded
Thermistor probe dislodged from its clip on the condenser coil pipe
Outdoor PCB fault causing false F3 reading even with a good thermistor

How to Fix It

Turn off the AC at the remote and at the wall switch or circuit breaker.

Allow the system 5 minutes to discharge and rest.
Switch power back on and restart the AC.

If F3 clears and does not return, monitor the AC over the next few hours. A persistent F3 confirms a real sensor or wiring fault.
Check outdoor unit airflow — ensure all four sides have clear space.

Blocked airflow causes the outdoor coil temperature to rise abnormally, which can push a borderline thermistor over the fault threshold.
Contact Lloyd service (1800-315-1111) to arrange a technician visit.

Note the exact error code F3 and your model number when contacting support.

When to Call a Professional

F3 requires a trained HVAC technician. Lloyd (now part of Havells) customer care: 1800-315-1111. The technician will test the thermistor resistance and confirm whether the sensor, its wiring, or the PCB is at fault.

Frequently Asked Questions

Lloyd was sold to Havells — does that affect service?

Lloyd ACs are now manufactured and serviced by Havells India. The Lloyd brand name is preserved but the service network and support is managed by Havells. Call 1800-315-1111 for Lloyd AC service — this is the Havells-Lloyd service line.

How much does Lloyd AC F3 repair cost?

An outdoor coil thermistor typically costs Rs 150–500. Total repair including technician visit and labour is usually Rs 800–2,000. Under warranty, the repair is free — keep your purchase invoice available.