TECO Air Conditioner Error P4

⚡ Quick Answer: The TECO Air Conditioner error code P4 indicates a compressor protection failure due to high pressure in the condenser circuit. This often results in ... ✅ DIY Fixable

What Does Error P4 Mean?

The TECO Air Conditioner error code P4 indicates a compressor protection failure due to high pressure in the condenser circuit. This often results in the unit stopping cooling and displaying P4 on the indoor panel. You may also notice unusual sounds from the compressor or outdoor fan before the unit shuts down. Common causes include restricted airflow from dirty condenser fins or high ambient temperatures that exceed safe pressure limits.

Common Symptoms:

  • Unit stops cooling and displays P4 on the indoor unit display panel
  • Outdoor unit may run but cooling performance abruptly stops
  • Possible loud compressor or outdoor fan stress prior to shutdown

Possible Causes

  • High condenser pressure due to restricted airflow or dirty condenser fins (medium)
  • High ambient temperature increasing condenser pressure beyond safe limits (medium)

How to Fix Error P4

DIY Fix Check and clean outdoor condenser unit

  1. Turn off AC and disconnect power.
  2. Inspect outdoor condenser fins for dirt, leaves, or debris.
  3. Gently clean fins with a soft brush or low‑pressure hose.
  4. Ensure clearance around the unit for proper airflow.

Technician Only Diagnose and service high pressure protection trip

  1. Measure refrigerant high and low side pressures to check for abnormal high condenser pressure.
  2. Verify outdoor fan motor operation and condenser airflow.
  3. Inspect and clean condenser coil thoroughly; straighten any bent fins.
  4. Check refrigerant charge level and for restrictions in the line (e.g., blockage in filter drier).
  5. Test pressure sensor and related control circuitry for faults.

Parts needed: Condenser coil, Outdoor fan motor / capacitor, Pressure transducer or sensor, Filter drier (if clogged)

🛑 When to Call a Pro:
  • If the unit repeatedly trips P4 after cleaning the condenser or in normal ambient conditions
  • If there are signs of refrigerant leakage, oil stains, or burning smells
  • If outdoor fan does not run properly

Next step

Choose the next step for P4

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Condenser Coil Assembly

Releases heat from the refrigerant circuit and must match the appliance's sealed-system design.

Typical part-only price
$80 - $400
DIY difficulty
Hard
Estimated time
120-240 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Capacitor

Stores electrical energy to assist in starting or running the motor efficiently.

$15 - $35 · Easy · 10-20 mins

Check fit & price
Model number required

Model-compatible Air Conditioner parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Air Conditioner Fin Cleaner

For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.

View maintenance supply
Maintenance supply

Model-Compatible Washable AC Filter

A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.

Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.

Find one that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Technical Specifications

note The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering.
part_number None

Common Questions

What does P4 error mean on TECO Air Conditioner?

P4 indicates a compressor protection failure due to high pressure in the condenser, causing the unit to stop cooling.

Can I fix TECO Air Conditioner P4 error myself?

Yes, you can check and clean the outdoor condenser unit by removing dirt and debris.

How much does it cost to fix P4 error?

Repair costs for the P4 error range from ¥10,000 to ¥50,000+, depending on parts and region.

When should I call a technician for P4?

Call a technician if P4 persists after cleaning, if you notice refrigerant leakage, or if the outdoor fan isn't functioning properly.

Data last verified: 2026-07-31

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