Lloyd AC Error Code F2 — What It Means & How to Fix It

What Does This Error Mean?

F2 on a Lloyd AC means the indoor pipe (evaporator coil) temperature thermistor has a fault. This sensor monitors the evaporator coil temperature to prevent ice formation and regulate the refrigerant cycle. F2 triggers a safety shutdown to protect the system.

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

Indoor pipe thermistor failed — open or short circuit in the sensor
Thermistor probe dislodged from the evaporator coil pipe
Air filter blocked — coil over-cools and thermistor reads at fault threshold
Refrigerant overcharge causing abnormally low coil temperature
Indoor PCB fault causing incorrect coil thermistor reading

How to Fix It

Clean the air filter — this resolves F2 in most cases.

Remove, wash, dry, and reinstall the filter. A clogged filter causes the coil to over-cool and triggers the F2 anti-freeze protection.
Switch off for 15 minutes to allow the coil to defrost, then restart.

Full defrost is needed before restart. Check for any ice visible on the indoor unit pipes before switching on.
If F2 clears with a clean filter and does not return, the filter was the cause.

If F2 returns despite a clean filter, the thermistor or refrigerant charge needs professional attention.
Call Lloyd service (1800-315-1111) if F2 persists after filter cleaning.

The technician will test thermistor resistance and check system operating pressures.

When to Call a Professional

F2 requires a Lloyd (Havells) technician. Lloyd customer care: 1800-315-1111. If cleaning the filter does not resolve F2, the technician will test the thermistor and check refrigerant charge.

Frequently Asked Questions

How often should I clean my Lloyd AC filter to avoid F2?

Clean the filter every 2–4 weeks in normal use. In dusty areas, near construction, or in homes with pets, clean it weekly. Regular filter cleaning prevents F2, improves cooling efficiency, and reduces electricity consumption.