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.

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: 2026-07-01

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