Midea Aircon PC 43 Error Code
Use this Midea PC 43 error code guide to capture the fault correctly and see what should be checked before parts are quoted.
What does Midea PC 43 mean?
Midea PC 43 is listed as phase-loss protection in Wall-Mounted Split, Standard Non-Inverter rows such as Midea Xtreme ONOFF R32 MSAGB wall-mounted fixed-speed systems. The loaded row is source-backed by official diagnostic material. Confirm the exact model, series, or signal row before accepting a parts quote.
Voltage, current, fuse, module, or power-supply protection has been triggered.
Loose connector, damaged harness, or outdoor electrical component fault.
PCB or inverter-module issue after power and load checks are confirmed.
What to do now
Use these steps before customer action or a parts quote.
Treat it as a fault signal
Stop repeated restarts if PC 43 returns, trips power, smells burnt, or the outdoor unit runs unusually hot.
No manufacturer reset steps listed for PC 43
Capture the complete PC 43 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
PC 43 error code, a clear display photo, Midea model stickers, affected rooms, operating state when the code appeared, and trip timing and outdoor-unit behaviour
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 | Use the source quick-check path: Check supply wiring and outdoor PCB input before attempting another restart. |
| Singapore / model note | Official Midea Xtreme ONOFF wall-mounted service-manual row. Keep separate from the newer inverter and compact Forest ONOFF rows because the source lists this fixed-speed family by EH / EL / EC / PC / PH display codes. |
- Source detail
- Diagnostic note
- What it says
- Use the source quick-check path: Check supply wiring and outdoor PCB input before attempting another restart.
- Source detail
- Singapore / model note
- What it says
- Official Midea Xtreme ONOFF wall-mounted service-manual row. Keep separate from the newer inverter and compact Forest ONOFF rows because the source lists this fixed-speed family by EH / EL / EC / PC / PH display codes.
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 PC 43, take a clear display photo. | Confirm whether PC 43 is voltage, current, module, fuse, or protection related. |
| Capture the Midea indoor and outdoor model stickers so the correct family row is used. | Check incoming voltage, connectors, inverter module, and current draw under load. |
| The selected source row lists no customer reset procedure. Note whether one room, several rooms, or the whole system is affected. | Confirm downstream loads before replacing electrical boards or modules. |
- You can check
- Before taking any system action on PC 43, take a clear display photo.
- Technician should confirm
- Confirm whether PC 43 is voltage, current, module, fuse, or protection related.
- You can check
- Capture the Midea indoor and outdoor model stickers so the correct family row is used.
- Technician should confirm
- Check incoming voltage, connectors, inverter module, and current draw under load.
- 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
- Confirm downstream loads before replacing electrical boards or modules.
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 PC 43. | The affected room, indoor board path, wiring route, or local component should be checked first. |
| Several rooms or the outdoor unit show the same PC 43 fault. | Prioritise the shared outdoor side, power path, and source-listed system branch. |
| The fault remains displayed or returns during operation. | Start with the source-row diagnostic branch before approving parts. |
| 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 Wall-Mounted Split, Standard Non-Inverter rows such as Midea Xtreme ONOFF R32 MSAGB wall-mounted fixed-speed systems. | 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 PC 43.
- 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 PC 43 fault.
- What it points to
- Prioritise the shared outdoor side, power path, and source-listed system branch.
- What you see
- The fault remains displayed or returns during operation.
- What it points to
- Start with the source-row diagnostic branch before approving parts.
- 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 Wall-Mounted Split, Standard Non-Inverter rows such as Midea Xtreme ONOFF R32 MSAGB wall-mounted fixed-speed systems.
- What it points to
- The loaded row is source-backed by official diagnostic material. Use the matching source row before quoting parts.
Electrical module or wiring decision
Midea PC 43 needs voltage, current, module, and load checks before parts are quoted. The repair path depends on whether the fault is supply-side, wiring-side, or board-side.
Supply voltage and load checks separate building-side issues from unit-side faults.
Module or inverter faults need measured current and voltage evidence.
Repeated electrical trips should not be cleared repeatedly without diagnosis.
Midea PC 43 questions
What does the Midea PC 43 error mean?
Can I fix a Midea PC 43 error myself?
Is it safe to keep running the aircon with a PC 43 error?
What causes a Midea PC 43 error?
Will a Midea PC 43 error need a repair or a full replacement?
What should I send a technician about a Midea PC 43 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.