Fujitsu General Air Conditioner Error 58

⚡ Quick Answer: Error code 58 on Fujitsu General Air Conditioners indicates a communication failure between the indoor and outdoor units. This can prevent the unit fr... ✅ DIY Fixable

What Does Error 58 Mean?

Error code 58 on Fujitsu General Air Conditioners indicates a communication failure between the indoor and outdoor units. This can prevent the unit from starting or operating normally, with the display either flashing or showing an error message. The issue often stems from faulty communication wiring or components, necessitating thorough inspection and potential repairs.

Common Symptoms:

  • Unit fails to start or operate normally when error 58 displayed
  • Indoor and outdoor units not communicating

Possible Causes

  • Communication fault between indoor and outdoor units (medium)

How to Fix Error 58

DIY Fix Basic checks and reset

  1. Turn off the air conditioner and breaker to cut power
  2. Wait about 5 minutes
  3. Restore power and restart the unit
  4. Observe if error clears

Technician Only Inspect communication wiring and components

  1. Check wiring connections between indoor and outdoor units for corrosion, loose contacts, or damage
  2. Test continuity of communication lines with a multimeter
  3. Inspect indoor and outdoor unit PCBs for visible damage or fault indicators
  4. Replace faulty communication wiring or control board components as needed

Parts needed: Communication wiring harness, Indoor/outdoor PCB

🛑 When to Call a Pro:
  • If error 58 persists after power cycling and basic inspection
  • If wiring or PCB damage is suspected
  • If you lack tools or experience to test electrical continuity safely

Next step

Choose the next step for 58

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

Typical part-only price
$20 - $120
DIY difficulty
Medium
Estimated time
30-90 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.

Find a part that fits my model

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.

Model number required

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.

Find a part that fits my model

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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.

Maintenance supply

Air Conditioner Fin Cleaner

For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.

View maintenance supply
Maintenance supply

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.

Find one that fits my model

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 58 error mean on Fujitsu General Air Conditioner?

It indicates a communication failure between the indoor and outdoor units.

Can I fix Fujitsu General Air Conditioner 58 error myself?

Yes, you can perform basic checks and reset the unit by power cycling.

How much does it cost to fix 58 error?

Repair costs range from $100 to $400, depending on the region and parts needed.

When should I call a technician for 58?

Call a technician if the error persists after troubleshooting or if you suspect wiring damage.

Sources & References

Data last verified: 2026-07-31

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