If you are using a Midea aircon that shows a P4 error code, it means your unit is having a problem with the inverter compressor drive. Several reasons can trigger this problem. Let’s discover the common possible causes of the P4 error code of your Midea aircon and its possible solutions.
What Does P4 Mean on a Midea Aircon?
The P4 error code on Midea air conditioners usually indicates an inverter compressor drive error. It can happen when the compressor does not start, shuts down suddenly, or fails to send signals properly.
The error may occur due to:
- Overheating in the compressor
- Faulty outdoor control board
- Loose wiring or burnt connectors
- Power supply issues
Common Reasons for P4 Error
Below are the common reasons for the P4 error code of Midea aircon:
1. Outdoor PCB Malfunction
The outdoor unit’s PCB (Printed Circuit Board) may have failed. This board controls the compressor. If it cannot send or receive signals, your unit will stop working and show the P4 error code.
2. Compressor Overload
When the compressor works too hard or gets too hot, it may trigger the P4 error. Overheating can happen due to poor ventilation or continuous high load.
3. Damaged Wiring
Loose wires between the indoor and outdoor units can break the signal. This may happen due to poor installation or corrosion caused by Singapore’s humid weather.
4. Dirty Outdoor Condenser
If the outdoor unit is blocked by dust or plants, airflow is restricted. This causes overheating and may lead to the P4 error.
Midea P4 Error: What To Do Next?
If you see P4 on your Midea aircon, here are the steps to follow:
Step 1: Turn Off the Power
Switch off the aircon from the circuit breaker. Wait for 5 minutes, then turn it back on. This resets the unit.
Step 2: Clean the Outdoor Unit
Check if leaves, dirt, or other obstructions are blocking the outdoor fan. Clean gently using a soft brush or vacuum.
Step 3: Check for Loose Cables
If you are confident and have basic knowledge, open the panel and check for any visibly loose wires. Do not touch anything if unsure.
Step 4: Observe the Unit
Turn it on again and observe. If the error still shows, call a technician.
When to Call a Technician
If basic checks do not solve the issue, it’s time to contact a professional. Look for BCA-licensed aircon repair services in Singapore.
Let them know:
- The model of your Midea unit
- When the P4 code first appeared
- Any strange sounds or smells
Technicians may need to:
- Replace the compressor control board
- Fix faulty wiring
- Check refrigerant pressure
- Repair or replace the compressor
Most jobs can be completed within a day unless parts are unavailable.
How to Prevent the P4 Error?
Below are the tips for prevent the P4 error in the future:
- Service your unit every 3 to 6 months
- Keep the outdoor condenser free from blockage
- Use voltage stabilizers if you face frequent power issues
- Avoid running the aircon at 16°C for long periods
FAQ
What causes Midea aircon to show P4?
P4 appears when the outdoor compressor or control board fails to work properly. It may involve overheating, communication failure, or electrical issues.
Can I fix P4 error by resetting the unit?
In some cases, turning off the power and restarting the unit may clear the error. But if the cause is hardware-related, it needs professional repair.
Is P4 a serious problem?
Yes. It indicates a core issue with the outdoor unit. Immediate attention is required to avoid long-term damage.
How much does it cost to fix P4 error in Singapore?
Repair costs can range from $80 to $300, depending on the parts required and service provider.
Which Midea models show P4 error?
Most inverter models from Midea may display P4, including System 2 and System 3 units commonly installed in HDB flats and condos in Singapore.
