Haier AC Error Code F1 — What It Means & How to Fix It

What Does This Error Mean?

F1 on a Haier AC means the indoor ambient temperature sensor has a fault. This sensor reads the room temperature so the AC can maintain the temperature you set on the remote. A failed or disconnected sensor triggers F1 and the AC stops operating.

Affected Models

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

Common Causes

Indoor ambient thermistor failed — resistance reading outside normal range
Thermistor connector loose at the indoor PCB
Thermistor wire pinched or damaged during installation or servicing
Dust or debris on the thermistor probe causing incorrect readings
Indoor PCB fault causing incorrect reading of the ambient sensor

How to Fix It

Switch off at the remote and main switch. Wait 5 minutes and restart.

If F1 clears after a reset and does not return, it was a transient error. Monitor over the next few uses.
Clean the indoor unit air filter and front panel.

The ambient sensor reads room air entering through the front panel. A blocked panel or dirty filter affects air circulation around the sensor.
If F1 persists, call Haier service (1800-200-9999).

Provide the model number from the sticker on the indoor unit when booking.

When to Call a Professional

F1 requires a Haier authorised technician. Haier India customer care: 1800-200-9999. The technician will test ambient thermistor resistance and replace the sensor if it is out of specification.

Frequently Asked Questions

How much does Haier F1 repair cost in India?

An indoor ambient thermistor typically costs Rs 200–500 for the part. With the Haier service visit charge and labour, total repair is usually Rs 1,000–2,000. Under warranty (1 year comprehensive), the repair is free — keep your purchase invoice.