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

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: 2026-07-01

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