White-Westinghouse Air Conditioner Error E3

⚡ Quick Answer: The E3 error on White Westinghouse Air Conditioners indicates a fault with the outdoor ambient temperature sensor. This malfunction can lead to errati... ✅ DIY Fixable

What Does Error E3 Mean?

The E3 error on White Westinghouse Air Conditioners indicates a fault with the outdoor ambient temperature sensor. This malfunction can lead to erratic temperature readings and inconsistent cooling performance, particularly noticeable during hot weather when the unit may stop cooling intermittently.

Common Symptoms:

  • E3 code displayed on unit
  • Cooling stops intermittently, especially in hot weather

Possible Causes

  • Outdoor ambient temperature sensor fault (low)

How to Fix Error E3

DIY Fix Check outdoor unit conditions

  1. Ensure the outdoor unit is not obstructed and has adequate airflow.
  2. Turn the unit off and back on after a few minutes to see if the code clears.

Technician Only Inspect and possibly replace ambient temperature sensor

  1. Locate the outdoor ambient temperature sensor.
  2. Test the sensor and its wiring for correct resistance values using a multimeter.
  3. Replace the sensor if faulty and retest the system for error clearance.

Parts needed: Ambient temperature sensor, Sensor wiring/connectors

🛑 When to Call a Pro:
  • If the error persists after basic checks
  • If there is visible damage to the outdoor unit or wiring
  • If multiple error codes appear simultaneously

Next step

Choose the next step for E3

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

Temperature Sensor

Monitors the internal temperature to ensure correct operation and prevent overheating.

Typical part-only price
$15 - $35
DIY difficulty
Easy
Estimated time
15-30 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

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

$20 - $120 · Medium · 30-90 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

wattage N/A
component Temperature Sensor
resistance 5-10 kΩ
part_number WS-TS-001
voltage_rating 120V AC

Common Questions

What does E3 error mean on White Westinghouse Air Conditioner?

E3 error signifies a malfunction in the outdoor ambient temperature sensor, leading to erratic cooling.

Can I fix White Westinghouse Air Conditioner E3 error myself?

Yes, check outdoor unit conditions and restart the unit to see if the code clears.

How much does it cost to fix E3 error?

Repair costs range from ¥5,000 to ¥20,000, depending on sensor replacement and labor.

When should I call a technician for E3?

Call a technician if the error persists after basic checks or if you notice visible damage.

Data last verified: 2026-07-26

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