Indoor Coil Temperature Sensor Error

Home Appliance Error Codes TCL Split AC

Can you still use it? With care until repaired

Who can fix it? Needs a technician

Typical repair time 30 minutes – 2 hours

Typical cost SAR 80 to 1,200

What it means

This code appears on TCL split air conditioners when the indoor board finds the indoor coil (evaporator) temperature sensor reading missing or out of range, meaning the sensor or its wire is open or shorted. The unit uses this reading to prevent the evaporator freezing, so it stops the compressor when it is lost. TCL codes are not the same across all series, so check your unit manual to confirm the meaning. The same code can mean something else on other brands.

Models covered: TCL split air conditioners; codes differ between TCL series, so confirm with the unit manual.

Symptoms3

Cooling stops, sometimes with the indoor fan still running.
It often appears after the indoor unit was cleaned.
Ice on the evaporator before the code in some cases.

Possible causes5

Sensor shifted off the evaporator pipe after a wash or service, which is common.
Sensor connector not tight on the indoor board or corroded.
Sensor (thermistor) failed with age or moisture.
Broken wire or damaged insulation.
Faulty sensor input on the indoor board.

How to diagnose5

Check the unit manual to confirm the code refers to this sensor on your model.
Switch off at the breaker for a few minutes and restart.
The technician inspects the sensor and its connector with the power off.
The technician measures the sensor resistance and compares it with the TCL table at the current temperature.
The technician tries a known-good sensor before replacing the board.

How to fix5

Refit the sensor in its correct position if it has moved.
Clean the connector and repair the wire.
Replace the sensor with a part matching the model.
Replace the indoor board if its sensor input is proven faulty.
Run the unit and confirm the code has cleared.

Repair cost

0–200

200–600

600–1,500

1,500+

In Saudi riyals; the highlighted part is the expected range for this fault.

Usually a sensor or connector at low cost; the cost only rises if the indoor board must be replaced.

Prices are rough estimates including the part and the technician’s fee, and vary with brand, model and part source.
Prices last updated: September 2026

Frequently asked questions

The code appeared after cleaning. What now?

Switch off and let the unit dry, then have the technician confirm the sensor is still in its pipe pocket and the connector is dry.

Does running with this code harm the unit?

The unit stops the compressor itself, but a sensor out of place can let the coil freeze if it runs, so fix it soon.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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