Daikin Air Conditioner Error UH-00

⚡ Quick Answer: The Daikin air conditioner error code UH-00 indicates a communication failure between the indoor and outdoor units. This can result from a mismatch be... ⚠️ Difficulty Varies

What Does Error UH-00 Mean?

The Daikin air conditioner error code UH-00 indicates a communication failure between the indoor and outdoor units. This can result from a mismatch between the units or issues with the communication wiring. Symptoms include the unit stopping operation and displaying the UH code, with no active heating or cooling despite being powered on. To resolve this, users can perform a power cycle, but persistent issues may require professional inspection.

Common Symptoms:

  • Unit stops operation and displays UH code on remote or panel
  • No active cooling/heating despite system appearing powered
  • Possible communication interruption between indoor and outdoor units

Possible Causes

  • Indoor unit and outdoor unit combination mismatch (medium)
  • Communication wiring fault between indoor and outdoor units (medium)
  • Control board or system control failure (low)

How to Fix Error UH-00

DIY Fix Power cycle and basic check

  1. Turn off the air conditioner using the remote or main power switch.
  2. Disconnect power at the breaker or unplug if possible and wait about 1 minute.
  3. Reconnect power and attempt restart to see if the code clears.
  4. Ensure indoor and outdoor units are correctly paired (check model compatibility documentation).

Technician Only Inspect communication wiring and unit compatibility

  1. Verify indoor and outdoor unit compatibility per model specifications.
  2. Inspect communication and power wiring between indoor and outdoor units for proper connections, continuity, and no damage.
  3. Check and test control boards in both indoor and outdoor units for faults with appropriate diagnostic tools.
  4. Replace or repair wiring or control modules as needed to restore communication.

Parts needed: Communication cable/connectors, Indoor control board, Outdoor control board

🛑 When to Call a Pro:
  • If error persists after power cycling
  • If obvious wiring damage or incorrect unit pairing is suspected
  • If replacing wiring or control boards is required

Next step

Choose the next step for UH-00

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

Based on diagnostic data

Most relevant component to inspect

HVAC Control Board

Controls fan, compressor, sensor, and communication functions in the HVAC unit.

Typical part-only price
$90 - $320
DIY difficulty
Hard
Estimated time
45-120 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

wattage N/A
component Communication Cable
resistance N/A
part_number DAIKIN 937000A
voltage_rating 230V AC

Common Questions

What does UH-00 error mean on daikin air conditioner?

UH-00 indicates a communication failure between indoor and outdoor units, leading to loss of cooling/heating.

Can I fix daikin air conditioner UH-00 error myself?

Yes, you can try power cycling the unit. Turn it off, wait a minute, then restart it.

How much does it cost to fix UH-00 error?

Repair costs typically range from ¥10,000 to ¥50,000+, depending on parts and labor.

When should I call a technician for UH-00?

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

Data last verified: 2026-07-25

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