Daikin aircon CC error code
Use this Daikin CC error code guide to decide when to stop resetting, what to capture, and what to check before parts are quoted. Match the model first; same-looking codes can point to different rows.
What does Daikin CC mean?
Daikin CC is listed as faulty humidity sensor and malfunction of humidity sensor system in Inverter Split, Multi-Split, Ceiling Cassette rows such as iSmart ENVi, iSmileEco. The loaded row is source-backed by official diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.
Open, shorted, displaced, or out-of-range thermistor or pressure-sensor reading.
Loose sensor connector, damaged sensor harness, or water-affected wiring.
PCB input fault after the sensor and wiring readings are confirmed.
What to do now
Use these steps before another reset, sensor check, or PCB quote.
Treat it as a fault signal
If CC returns or cooling is still abnormal, stop treating it as a simple reset issue.
Reset CC once
Capture the CC display first, then power-cycle once only and note whether the same fault returns.
Send these to us
CC error code, a clear display photo, Daikin model stickers, affected rooms, reset result, and when the fault appears
Source-specific guidance
These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.
| Source detail | What it says |
|---|---|
| Source repair action | Stop the system if it smells burnt, leaks, or trips power; note the exact model and code before booking diagnosis. |
| Singapore / model note | This row is taken from the selected Daikin operation manual's remote-controller fault diagnosis table. |
| Singapore / model note | Official Daikin SM-TS3 self-diagnosis row. Manual causes: Defective humidity sensor; Defective connector contact. |
What to check before repair
Use this split to separate safe evidence capture from the tests a technician should prove before quoting parts.
| You can check | Technician should confirm |
|---|---|
| Before resetting CC, take a clear display photo. | Confirm which sensor CC maps to on the exact model table. |
| Capture the Daikin indoor and outdoor model stickers so the correct family row is used. | Measure the sensor value against the service-manual resistance or voltage range. |
| Note whether one room, several rooms, or the whole system is affected, plus whether it returns after one reset. | Check connector condition, harness continuity, and PCB input before replacing boards. |
What changes the next step
These clues decide whether the first check is room-side, shared outdoor-side, refrigerant-side, source-table, or model-family confirmation.
| What you see | What it points to |
|---|---|
| Only one indoor unit shows CC. | The affected room, indoor board path, wiring route, or local component should be checked first. |
| Several rooms or the outdoor unit show the same CC fault. | The shared outdoor side, power path, communication trunk, or refrigerant circuit needs priority checking. |
| The fault appears immediately even before the unit cools properly. | Sensor value, connector, harness, and PCB input should be tested in that order. |
| The same code appears with different meanings in the source rows. | Model family, source table, and system type decide which meaning applies before parts are quoted. |
| The model belongs to Inverter Split, Multi-Split, Ceiling Cassette rows such as iSmart ENVi, iSmileEco. | The loaded row is source-backed by official diagnostic material. Use the matching source row before quoting parts. |
Sensor or PCB decision
Daikin CC is usually repair-first if a sensor or harness reading is confirmed. Board replacement should wait until the sensor circuit is tested.
Sensor replacement is usually targeted when resistance or voltage readings are out of range.
Harness or connector damage can look like a sensor fault until continuity is checked.
PCB replacement is a later step if the sensor and wiring test correctly.
Daikin CC questions
What does the Daikin CC error mean?
Can I fix a Daikin CC error myself?
Is it safe to keep running the aircon with a CC error?
What causes a Daikin CC error?
Will a Daikin CC error need a repair or a full replacement?
What should I send a technician about a Daikin CC error?
Confirm the fault
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Read next
Use these if the quote mentions the parts, checks, or repair path this code points to.