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:
- é‹è»¢ä¸1B‰Œè¡¨ç¤º•Œ‹
- 冷房š–房動作Œä¸å®‰å®šŸœæ¢
- 室外機崌ä¸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
- ‹è»¢’åœæ¢™‹
- 室外機周辺šœå®³ç‰©„汚ŒŒ„‹ç›®è¦–™‹
- 室内機–æ©Ÿ›»æº’5œ10分間•—–’切‹
- –’ˆ»—†åº¦é‹è»¢’開始—Œæ¶ˆˆ‹‹ç¢ºèª™‹
Technician Only 外気温œ›
- ‰œ™‹å®¤å¤–æ©Ÿ–気温ˆTO）›»æ°—抵抗値…ç·š’測定—„囲‹’確誙‹
- Ž¥è§¦ä¸è‰¯„æ–ç·š’修棙‹
- 異常Œç¢ºèª•ŒŸå ´åˆ–気温ˆTO）’交曙‹
Parts needed: 外気温ˆTO）, é…ç·š
- 基本的ˆå¾Œ1BŒç¶™ç¶š™‹å ´åˆ
- 室外機内部’é–‹‘‹å¿…覌‹ç‚¹æ¤œ„部å“交曌必覈
- 冷暖房動作Œå…¨ŒŒ„•°éŸ³„焦’臌™‹å ´åˆ
Next step
Choose the next step for 1B
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Browse by model — no specific failed part is claimed
Model-compatible Air Conditioner parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Search results are not a diagnosis. Verify both the complete appliance model and the retailer's fit information before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Air Conditioner Fin Cleaner
For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.
Model-Compatible Washable AC Filter
A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.
Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
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: 2026-07-31
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