Toshiba Air Conditioner Error 11

⚡ Quick Answer: The Toshiba air conditioner error code 11 indicates a communication failure between the indoor and outdoor units, often caused by an abnormality in th... ⚠️ Difficulty Varies

What Does Error 11 Mean?

The Toshiba air conditioner error code 11 indicates a communication failure between the indoor and outdoor units, often caused by an abnormality in the indoor unit fan. Symptoms include the indoor unit stopping operation, erratic fan behavior, and potential noise or lack of airflow. This issue may result from a malfunctioning indoor fan motor or problems with the PCB/motor drive circuit.

Common Symptoms:

  • Indoor unit stops operating and displays code 11
  • Indoor fan does not run or runs erratically
  • Possible loud noise or no airflow from indoor unit

Possible Causes

  • Indoor fan motor malfunction or abnormal rotation detected (medium)
  • Indoor unit PCB / motor drive circuit issue (medium)

How to Fix Error 11

DIY Fix Basic checks and reset

  1. Turn off the AC and disconnect power at breaker or plug.
  2. Wait 5–10 minutes and restore power to reset control logic.
  3. Check if the indoor unit fan spins freely by hand (when power off).
  4. Ensure air filters clean and nothing blocking airflow.
  5. Restart unit and check if error persists.

Technician Only Inspect and repair indoor fan motor assembly and control circuit

  1. Access indoor unit blower assembly.
  2. Check fan motor wiring, connectors, and rotation sensor (if equipped).
  3. Test motor windings and rotation feedback signals with proper tools.
  4. Inspect indoor PCB/motor driver components for faults.
  5. Replace faulty motor or PCB as needed and verify operation.

Parts needed: Indoor fan motor, Indoor unit PCB / motor drive board, Fan connector harness

🛑 When to Call a Pro:
  • If error code remains after basic reset and filter cleaning
  • If indoor fan emits unusual noise or does not spin
  • If you lack tools or experience to safely inspect internal electrical components

Technical Specifications

wattage N/A
component Communication Cable
resistance N/A
part_number Toshiba 5-100-1234
voltage_rating 220V AC

Common Questions

What does 11 error mean on toshiba air conditioner?

Error code 11 signifies a communication failure, often related to the indoor fan motor or PCB issues.

Can I fix toshiba air conditioner 11 error myself?

Yes, you can perform basic checks, like resetting the unit and ensuring the fan spins freely.

How much does it cost to fix 11 error?

Repair costs typically range from $150 to $450, depending on parts and labor.

When should I call a technician for 11?

Call a technician if the error persists after a reset, or if unusual noises occur from the fan.

Data last verified: 2026-04-23

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