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

What Does This Error Mean?

F3 on a Haier AC indicates a fault with the outdoor coil (condenser) temperature thermistor. This sensor monitors the outdoor heat exchanger temperature to protect the system from overheating or freezing. A failed or disconnected thermistor triggers F3 and the compressor stops running.

Affected Models

Haier Inverter Split AC (all capacities)
Haier Turbo Cool
Haier Pro Inverter
Haier HREA series
Haier HSUA series

Common Causes

Outdoor coil thermistor failed due to age or electrical surge
Thermistor wiring damaged — cut, pinched, or water-damaged
Connector at the outdoor control board loose or corroded from humidity
Thermistor probe shifted from the coil mounting position
Outdoor PCB (control board) fault causing incorrect thermistor reading

How to Fix It

Switch the AC off at the remote and at the circuit breaker or power socket.

Allow 5 minutes for the system to fully de-energise.
Restore power and restart the AC normally.

If F3 was a temporary read error, it may clear. If F3 returns within minutes of restarting, the thermistor circuit needs professional attention.
Note when exactly F3 appears — immediately on startup, or after the unit runs for a few minutes.

Immediate errors point to a broken wire or disconnected connector. Errors that appear after running suggest a thermistor that fails when it warms up.
Book a service visit through Haier care (1800-200-9999 or haier.com/in/support).

Mention model number and error code F3 when booking for a faster visit.

When to Call a Professional

F3 requires a licensed technician — do not attempt to open the outdoor unit. Haier India customer care: 1800-200-9999. A technician will test the thermistor resistance (typically 5k-20k ohms depending on temperature) and replace if faulty.

Frequently Asked Questions

What does the outdoor coil thermistor do in a Haier AC?

It measures the temperature of the condenser coil during cooling and heating cycles. The control board uses this data to protect the system from damage — stopping the compressor if coil temperature reaches unsafe levels. A faulty reading triggers F3 as a safety lockout.

How much does Haier F3 repair cost in India?

An outdoor thermistor sensor typically costs Rs 200–600. With the Haier service visit charge and labour, total repair cost is usually Rs 1,000–2,500. If under warranty (1 year comprehensive), the repair is free — provide proof of purchase.