Indoor Fan Motor Error

What it means

This code appears on Toshiba residential split air conditioners when the fault code is read with the remote check function. It means the indoor board did not detect the indoor fan turning at the required speed, or at all. The unit stops because cooling without airflow would freeze the coil. The same code can mean something else on other brands, and Toshiba commercial units use different codes.

Models covered: Toshiba residential split air conditioners (RAC) that show a two-character check code through the remote check function; Toshiba commercial units use different codes.

Related codes: 120D0C

Symptoms4

• No air, or very weak air, from the indoor unit.
• The unit stops with blinking lamps and code 11 is found on check.
• Rubbing or humming noise from inside the indoor unit.
• The fan turns slowly and stops shortly after start.

Possible causes5

• A heavily soiled cross-flow fan adding load or stopping rotation.
• A foreign object or broken blade blocking the fan.
• A failed indoor fan motor or worn bearings.
• A loose motor connector or damaged lead.
• A fault in the motor drive circuit on the indoor control board.

How to diagnose5

1. Read the code with the remote check function: press and hold the check button, then step through the codes with the timer button until the indoor unit beeps continuously; the code shown then is the fault. Steps vary slightly by remote, so follow the owner's manual.
2. Turn the unit off at the breaker, then look through the outlet to see whether the fan is dirty or stuck.
3. With power off, turn the fan gently by hand; if it is stiff or stuck, dirt or worn bearings are likely.
4. The technician checks the motor connector and lead and tests the motor using the manufacturer method.
5. The technician checks the board output to the motor to decide whether the motor or the board is at fault.

How to fix6

1. Clean the cross-flow fan and the whole indoor unit.
2. Remove the foreign object or replace a broken fan.
3. Reseat the motor connector or repair the lead.
4. Replace the indoor fan motor.
5. Replace the indoor control board if it does not drive the motor.
6. Run the unit and confirm steady fan speed and no code.

Repair cost

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

The cost starts at a motor replacement or deep clean with small parts, and rises if the indoor control board turns out to be at fault.

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