Toshiba Air Conditioner Error 1B

⚡ Quick Answer: The Toshiba Air Conditioner error 1B indicates a communication failure between the indoor and outdoor units, often resulting in unstable or halted coo... ✅ DIY Fixable

What Does Error 1B Mean?

The Toshiba Air Conditioner error 1B indicates a communication failure between the indoor and outdoor units, often resulting in unstable or halted cooling and heating operations. This issue is typically caused by a malfunctioning outdoor temperature sensor (TO), leading to inaccurate temperature readings on the outdoor unit display. Users may notice blinking display lights during operation as a symptom of this error.

Common Symptoms:

  • 運転中1B‰Œè¡¨ç¤º•Œ‹
  • 冷房š–房動作Œä¸å®‰å®šŸœæ­¢
  • 室外機側Œä¸æ­£ç¢º

Possible Causes

  • 室外機外気温ˆTO）異常 (high)

How to Fix Error 1B

DIY Fix 基本的ˆ

  1. ‹è»¢’停止™‹
  2. 室外機周辺šœå®³ç‰©„汚ŒŒ„‹ç›®è¦–™‹
  3. 室内機–æ©Ÿ›»æº’5œ10分間•—–’切‹
  4. –’ˆ»—†åº¦é‹è»¢’開始—Œæ¶ˆˆ‹‹ç¢ºèª™‹

Technician Only 外気温œ›

  1. ‰œ™‹å®¤å¤–æ©Ÿ–気温ˆTO）›»æ°—抵抗値…ç·š’測定—„囲‹’確認™‹
  2. Ž¥è§¦ä¸è‰¯„æ–­ç·š’修正™‹
  3. 異常Œç¢ºèª•ŒŸå ´åˆ–気温ˆTO）’交換™‹

Parts needed: 外気温ˆTO）, 配線

🛑 When to Call a Pro:
  • 基本的ˆå¾Œ1BŒç¶™ç¶š™‹å ´åˆ
  • 室外機内部’é–‹‘‹å¿…要Œ‹ç‚¹æ¤œ„部品交換Œå¿…要ˆ
  • 冷暖房動作Œå…¨ŒŒ„•°éŸ³„焦’臭Œ™‹å ´åˆ

Technical Specifications

wattage 2000W
component Control Board
resistance 10-20 ohms
part_number Toshiba 123456789
voltage_rating 220V AC

Common Questions

What does 1B error mean on Toshiba Air Conditioner?

The 1B error indicates a communication failure between indoor and outdoor units, often caused by a faulty outdoor temperature sensor.

Can I fix Toshiba Air Conditioner 1B error myself?

Yes, you can perform basic checks and resets, such as ensuring there are no obstructions around the outdoor unit.

How much does it cost to fix 1B error?

Repairing the 1B error typically costs between ¥5,000 and ¥18,000, depending on parts and labor.

When should I call a technician for 1B?

Call a technician if the 1B error persists after a reset, or if internal inspection and parts replacement are required.

Data last verified: 2026-04-23

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