Toshiba Air Conditioner Error 1E

⚡ Quick Answer: The Toshiba Air Conditioner 1E error signifies a communication failure between the indoor and outdoor units, often due to high discharge temperatures ... ✅ DIY Fixable

What Does Error 1E Mean?

The Toshiba Air Conditioner 1E error signifies a communication failure between the indoor and outdoor units, often due to high discharge temperatures detected by the outdoor TD sensor. This can lead to the unit stopping operation, with symptoms including the error display, potential overheating of the outdoor unit, and compressor shutdown for protection. Addressing this issue may involve inspecting the TD sensor, electronic expansion valve, or outdoor control board.

Common Symptoms:

  • Unit stops operation with 1E displayed
  • Detected discharge pipe/TD sensor high temperature
  • Outdoor unit may shut down to protect compressor

Possible Causes

  • High discharge temperature detected (medium)
  • TD sensor or associated circuit malfunction (medium)
  • Refrigerant issues (insufficient charge or cycle problem) (low)

How to Fix Error 1E

DIY Fix Basic checks before service call

  1. Turn off and restart unit to see if error persists
  2. Ensure outdoor unit airflow is unobstructed
  3. Check that filters are clean and no obvious ice or frost on pipes
  4. Note conditions when 1E appears (startup, high load)

Technician Only Technician diagnosis and corrective steps

  1. Measure actual discharge temperature at TD sensor
  2. Test TD sensor resistance and compare to spec
  3. Inspect TD detection circuitry and connector continuity
  4. Check refrigerant charge level and inspect for leaks
  5. Evaluate electronic expansion valve (if present) and high‑temperature conditions causing sensor trip

Parts needed: TD (discharge) temperature sensor, Electronic expansion valve (if applicable), Outdoor control board or wiring harness

🛑 When to Call a Pro:
  • Repeated 1E display after basic power reset
  • Outdoor unit appears excessively hot or smells of burnt components
  • Visible refrigerant leak or frost on copper piping

Technical Specifications

wattage 1200W
component Control Board
resistance 5-10 ohms
part_number Toshiba 5D-118-001
voltage_rating 220V AC

Common Questions

What does 1E error mean on Toshiba Air Conditioner?

The 1E error indicates a communication failure due to high discharge temperatures or sensor malfunctions.

Can I fix Toshiba Air Conditioner 1E error myself?

Yes, you can try turning off and restarting the unit, checking airflow, and cleaning filters.

How much does it cost to fix 1E error?

Repair costs range from ¥15,000 to ¥60,000, depending on parts and labor.

When should I call a technician for 1E?

Call a technician if the error persists after a reset or if you notice overheating or leaks.

Data last verified: 2026-07-07

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