Fujitsu General Air Conditioner Error 29
⚡ Quick Answer: The Fujitsu General air conditioner error code 29 indicates a communication failure between the indoor and outdoor units, often due to an abnormal rea... ✅ DIY Fixable
What Does Error 29 Mean?
The Fujitsu General air conditioner error code 29 indicates a communication failure between the indoor and outdoor units, often due to an abnormal reading from the outdoor heat exchanger temperature sensor. This can lead to the unit stopping operation and displaying the error code. If the outdoor unit fails to run or shuts down shortly after starting, it's essential to address this issue promptly.
Common Symptoms:
- Unit stops operation and displays code 29 on controller or indoor display
- Outdoor unit may not run or may shut down shortly after startup
Possible Causes
- Outdoor heat exchanger/middle temperature sensor abnormal reading (low)
How to Fix Error 29
DIY Fix Verify basic conditions and power cycle
- Turn off the unit and disconnect power (breaker or plug).
- Wait 5–10 minutes and restore power.
- See if the code clears and whether normal operation resumes.
Technician Only Inspect outdoor heat exchanger temperature sensor and wiring
- Access the outdoor unit and locate the heat exchanger temperature sensor (thermistor).
- Check wiring harness continuity and connector seating between outdoor sensor and control board.
- Test sensor resistance against expected values per service manual for the model.
- Replace the sensor/thermistor if it is out of specification or shows open/short circuit.
Parts needed: Outdoor heat exchanger temperature sensor (thermistor), Wiring harness if damaged
- If the code persists after a power cycle
- If sensor wiring appears damaged or if there is uncertainty about outdoor unit diagnostics
Next step
Choose the next step for 29
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
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.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
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.
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 29 error mean on fujitsu general air conditioner?
Error 29 means a communication failure between indoor and outdoor units, often due to a faulty outdoor heat exchanger sensor.
Can I fix fujitsu general air conditioner 29 error myself?
Yes, you can try power cycling the unit by turning it off and disconnecting power for 5-10 minutes.
How much does it cost to fix 29 error?
Repair costs for error 29 range from ¥5,000 to ¥20,000 for parts, plus labor depending on your region.
When should I call a technician for 29?
Call a technician if the code persists after a power cycle or if you notice damaged sensor wiring.
Data last verified: 2026-07-31
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