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Error code reference

Daikin Heat Pump Error Code 00

Normal operation, no fault detected.

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What the 00 error code actually means

Error code 00 means your Daikin heat pump is running normally with no problems detected. Think of it as the system giving itself a clean bill of health. If you were expecting to see an error code, the issue may have been temporary or may be stored in the unit's history log.

Diagnostic procedure

The full 00 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

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1
Confirm the fault
Power cycle the unit: switch off the breaker for 60 seconds, then restore power. If the code returns, the fault is persistent and the procedure below isolates the cause.
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Most common causes of 00

Ranked by how often they cause this code
  1. 1System queried with no active fault
  2. 2Fault was recently cleared or resolved
  3. 3Intermittent fault that has self-corrected
  4. 4Default display state after power cycle

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Questions people ask about 00

What does 00 mean on a Daikin heat_pump?
Code 00 on a Daikin heat pump means normal operation with no fault currently detected. It is not an error in the traditional sense; it is the system's way of confirming that all monitored circuits and sensors are within acceptable parameters. You may see this code appear after a fault has been cleared or simply when the system is operating without any issues.
Is it safe to continue running my heat pump when it shows code 00?
Yes, code 00 confirms the system is operating normally and there are no active faults detected. It is completely safe to continue running the unit. If you suspect a problem based on performance rather than a displayed error, have the fault history reviewed by a qualified technician.
What does code 00 cost to repair on a Daikin heat pump?
Code 00 does not require any repair, as it indicates normal system operation with no fault detected. There is no associated repair cost for this code. If a technician is called out to investigate a complaint and finds code 00 with no fault history, you may only incur a standard diagnostic service call fee, which typically ranges from around $75 to $150 depending on your location and service provider.
Do I need to fix anything if my Daikin heat pump shows code 00?
No corrective action is required for code 00 itself, as it indicates normal operation. However, if you are investigating a reported performance issue, you should retrieve the unit's fault history log to check for any previously stored codes. An intermittent problem may have temporarily resolved while still leaving a record in the system's memory.
Will resetting my Daikin heat pump clear error code 00?
Code 00 is not an error that needs to be cleared. It is the default no-fault status code and will remain displayed as long as the system is operating normally. Performing a reset will not change this code because there is no active fault present to clear.

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