Indoor Evaporator Temperature Sensor Open or Short Circuit

Home Appliance Error Codes Midea 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 Midea split air conditioners with the classic code set when the indoor evaporator coil temperature sensor (T2) reading is impossible, meaning an open or short circuit. The unit relies on this sensor for evaporator anti-freeze protection and for its refrigerant-leak check (code EC), so it stops running. The same code can mean something else on other brands.

Models covered: Midea residential split air conditioners with the classic display codes (E0–EC, F1–F4, P0–P4); newer Midea series use different codes (EH, EL, PC) and some models differ.

Symptoms3

Cooling stops while the indoor fan may keep running.
The code may appear after the indoor unit was washed.
Ice on the evaporator or code EC may show before it.

Possible causes5

Loose or corroded sensor connector on the indoor board.
Failed sensor (thermistor).
Cut, chafed or rodent-damaged sensor wire.
Sensor slipped out of its pocket on the evaporator pipe after a wash or service.
Faulty sensor input circuit on the indoor board, the least likely cause.

How to diagnose5

Switch off at the breaker for a few minutes and restart to see if the code is permanent.
With the power off, the technician opens the indoor board cover and checks the T2 sensor connector.
The technician measures the T2 sensor resistance and compares it with the Midea table for the same temperature.
The technician traces the wire for breaks or chafing.
If the sensor and wire are fine, the technician tries a known-good sensor before blaming the board.

How to fix5

Clean the connector and seat it firmly.
Repair or replace the wire.
Fit a new matching T2 sensor in its original position.
Replace the indoor board if its input circuit is proven faulty.
Run the unit and confirm the code is gone.

Repair cost

0–200

200–600

600–1,500

1,500+

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

Most cases are a sensor or connector at low cost; the indoor board is what raises the cost if it has failed.

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

How is E5 related to EC?

Midea detects low refrigerant from the evaporator temperature read by T2, so a misplaced or failed sensor can bring up EC or E5.

The code showed after a wash. Should I let it dry?

Yes. Switch off and let the unit dry fully; if the code stays, have the connector and sensor position checked.

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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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