Daikin Aircon PE Error Code
Use this Daikin PE error code guide to capture the fault correctly and see what should be checked before parts are quoted.
What does Daikin PE mean?
Daikin PE is listed as automatic refrigerant charge operation nearly completed in Ceiling Cassette, Ceiling Suspended, Residential Ducted rows such as SkyAir, VRV. The loaded row is source-backed by official diagnostic material. Confirm the exact model, series, or signal row before accepting a parts quote.
Low refrigerant, active leak, restriction, or abnormal pressure reading.
Dirty condenser, weak outdoor fan, blocked airflow, or high-load operation.
Pressure sensor, expansion path, or compressor protection after readings are taken.
What to do now
Use these steps before customer action, gas work, a pressure check, or parts quote.
Stop using the unit if PE returns
Stop using the unit if PE returns with weak cooling, frost, hissing, or outdoor-unit tripping.
No manufacturer reset steps listed for PE
Capture the complete PE display and model stickers first. The selected source row lists no customer reset procedure; do not treat a generic power-cycle as manufacturer guidance.
Send these to us
PE error code, a clear display photo, Daikin model stickers, affected rooms, operating state when the code appeared, and cooling-loss timeline and any recent gas top-up
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 |
|---|---|
| Diagnostic note | Stop the system if it smells burnt, leaks, or trips power; note the exact model and code before booking diagnosis. |
| Singapore / model note | Official Daikin SM-TS3 self-diagnosis row. Manual causes: Automatic refrigerant charge is nearly completed. |
- Source detail
- Diagnostic note
- What it says
- Stop the system if it smells burnt, leaks, or trips power; note the exact model and code before booking diagnosis.
- Source detail
- Singapore / model note
- What it says
- Official Daikin SM-TS3 self-diagnosis row. Manual causes: Automatic refrigerant charge is nearly completed.
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 taking any system action on PE, take a clear display photo. | Match PE to low-pressure, high-pressure, leak, or refrigerant-cycle protection. |
| Capture the Daikin indoor and outdoor model stickers so the correct family row is used. | Measure operating pressures, coil temperatures, airflow, and outdoor fan condition. |
| The selected source row lists no customer reset procedure. Note whether one room, several rooms, or the whole system is affected. | Leak-check or pressure-test before recommending another refrigerant top-up. |
- You can check
- Before taking any system action on PE, take a clear display photo.
- Technician should confirm
- Match PE to low-pressure, high-pressure, leak, or refrigerant-cycle protection.
- You can check
- Capture the Daikin indoor and outdoor model stickers so the correct family row is used.
- Technician should confirm
- Measure operating pressures, coil temperatures, airflow, and outdoor fan condition.
- You can check
- The selected source row lists no customer reset procedure. Note whether one room, several rooms, or the whole system is affected.
- Technician should confirm
- Leak-check or pressure-test before recommending another refrigerant top-up.
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 PE. | The affected room, indoor board path, wiring route, or local component should be checked first. |
| Several rooms or the outdoor unit show the same PE fault. | Prioritise the shared outdoor side, pressure conditions, airflow, and refrigerant circuit. |
| Cooling is weak, frost appears, or the outdoor unit trips under load. | Pressure, airflow, leak, and condenser checks should come before another top-up. |
| The model family is different from the row you found online. | Use the model or series filter first; same-looking codes can still belong to different diagnostic tables. |
| The model belongs to Ceiling Cassette, Ceiling Suspended, Residential Ducted rows such as SkyAir, VRV. | The loaded row is source-backed by official diagnostic material. Use the matching source row before quoting parts. |
- What you see
- Only one indoor unit shows PE.
- What it points to
- The affected room, indoor board path, wiring route, or local component should be checked first.
- What you see
- Several rooms or the outdoor unit show the same PE fault.
- What it points to
- Prioritise the shared outdoor side, pressure conditions, airflow, and refrigerant circuit.
- What you see
- Cooling is weak, frost appears, or the outdoor unit trips under load.
- What it points to
- Pressure, airflow, leak, and condenser checks should come before another top-up.
- What you see
- The model family is different from the row you found online.
- What it points to
- Use the model or series filter first; same-looking codes can still belong to different diagnostic tables.
- What you see
- The model belongs to Ceiling Cassette, Ceiling Suspended, Residential Ducted rows such as SkyAir, VRV.
- What it points to
- The loaded row is source-backed by official diagnostic material. Use the matching source row before quoting parts.
Pressure, leak, or airflow decision
Daikin PE needs measured pressure, airflow, and leak evidence before gas work is approved. Replacement only becomes serious when the leak, compressor, or coil repair is uneconomical.
A top-up alone is poor value if the leak source is not found.
High-pressure faults often come from airflow, condenser, fan, or overcharge conditions.
Coil leaks or compressor-related findings can shift older systems toward replacement.
Daikin PE questions
What does the Daikin PE error mean?
Can I fix a Daikin PE error myself?
Is it safe to keep running the aircon with a PE error?
What causes a Daikin PE error?
Will a Daikin PE error need a repair or a full replacement?
What should I send a technician about a Daikin PE error?
Confirm the fault
Share the error code, model number and symptoms so we can assess the likely cause.
Not the right code?
Browse the full Daikin list or check a few codes in the same fault category.
Ready to get started?
Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.
Read next
Use these if the quote mentions the parts, checks, or repair path this code points to.