Westinghouse Air Conditioner Error F3

⚡ Quick Answer: The Westinghouse Air Conditioner F3 error indicates a malfunction with the compressor discharge temperature sensor, leading to incorrect temperature r... ✅ DIY Fixable

What Does Error F3 Mean?

The Westinghouse Air Conditioner F3 error indicates a malfunction with the compressor discharge temperature sensor, leading to incorrect temperature readings and potential cooling issues. This fault may stem from an open or short circuit in the sensor, preventing the unit from functioning properly.

Common Symptoms:

  • Unit may stop cooling
  • Error code F3 displayed on indoor unit

Possible Causes

  • Compressor discharge temperature sensor open circuit or short circuit (medium)

How to Fix Error F3

DIY Fix Check basic connections and power cycle

  1. Turn off and disconnect the air conditioner from power.
  2. Wait 5 minutes and then restore power to see if the error clears.
  3. Ensure that the outdoor unit is free of debris and that air intake and outlet are not blocked.

Technician Only Inspect and replace the compressor discharge temperature sensor

  1. Disconnect power at the breaker.
  2. Access the outdoor unit control box and locate the compressor discharge (T5) temperature sensor.
  3. Test sensor resistance and wiring continuity with a multimeter to confirm open circuit or short.
  4. Replace the faulty temperature sensor and verify proper connection to PCB.
  5. Restore power and test unit operation to confirm resolution.

Parts needed: Compressor discharge (T5) temperature sensor, Potential wiring harness or connectors

🛑 When to Call a Pro:
  • If you’re unable to locate or access sensor wiring safely.
  • If replacing the temperature sensor does not clear the code.
  • If there are signs of refrigerant issues or compressor overheating.

Technical Specifications

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

Common Questions

What does F3 error mean on Westinghouse Air Conditioner?

F3 error indicates a malfunction in the compressor discharge temperature sensor, causing cooling issues.

Can I fix Westinghouse Air Conditioner F3 error myself?

Yes, you can check connections and power cycle the unit to see if the error clears.

How much does it cost to fix F3 error?

Estimated repair cost ranges from $50 to $200, including parts and labor.

When should I call a technician for F3?

Call a technician if you can't safely access the wiring or if the error persists after your attempts to fix it.

Sources & References

Data last verified: 2026-07-01

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