Westinghouse Air Conditioner Error E2

⚡ Quick Answer: The Westinghouse Air Conditioner E2 error code indicates a problem with the temperature sensor, specifically a zero-crossing signal detection fault. T... ✅ DIY Fixable

What Does Error E2 Mean?

The Westinghouse Air Conditioner E2 error code indicates a problem with the temperature sensor, specifically a zero-crossing signal detection fault. This can lead to erratic temperature readings, improper cooling, or the unit completely stopping operation. If the E2 error appears on the control panel, the air conditioner is likely unable to function properly. Basic troubleshooting steps can help, but persistent issues may require professional diagnosis and repair.

Common Symptoms:

  • Unit stops operating and displays E2 on control panel or indicator lights

Possible Causes

  • Zero‑crossing signal detection fault (medium)

How to Fix Error E2

DIY Fix Basic troubleshooting for E2 fault

  1. Turn off the air conditioner using the remote control.
  2. Turn off power at breaker or unplug unit to fully remove power.
  3. Wait at least 10 minutes to allow control board reset.
  4. Restore power and attempt to restart the unit.
  5. Check whether the E2 error recurs upon startup.

Technician Only Technician diagnosis for zero‑crossing signal fault

  1. Verify the control board’s zero‑crossing detection circuit and waveform sensors with appropriate multimeter or oscilloscope equipment.
  2. Inspect wiring harnesses and connectors related to line supply and control board for loose or damaged connections.
  3. Test or replace control board if zero‑cross signal processing component is found faulty.
  4. After repair, test unit under normal operating conditions to confirm resolution.

Parts needed: Control board, Wiring harness, Line voltage sensors

🛑 When to Call a Pro:
  • If E2 persists after power reset and basic checks.
  • If there are burning smells, sparks, or unusual noises.
  • If unit shows additional error codes or fails to respond after basic troubleshooting.

Next step

Choose the next step for E2

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

Based on diagnostic data

Most relevant component to inspect

HVAC Control Board

Controls fan, compressor, sensor, and communication functions in the HVAC unit.

Typical part-only price
$90 - $320
DIY difficulty
Hard
Estimated time
45-120 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.

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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 kOhms
part_number WS-TS-001
voltage_rating 120V AC

Common Questions

What does E2 error mean on Westinghouse Air Conditioner?

E2 indicates a failure in the temperature sensor, causing erratic cooling.

Can I fix Westinghouse Air Conditioner E2 error myself?

Yes, you can try resetting the unit by turning it off and unplugging it for 10 minutes.

How much does it cost to fix E2 error?

Repair costs range from $150 to $400, depending on parts and labor.

When should I call a technician for E2?

Call a technician if E2 persists after a reset or if you notice burning smells or unusual noises.

Data last verified: 2026-07-22

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