Amana Air Conditioner Error F4

⚡ Quick Answer: The Amana air conditioner F4 error code indicates a failure of the indoor temperature sensor, often leading to erratic temperature readings and incons... ✅ DIY Fixable

What Does Error F4 Mean?

The Amana air conditioner F4 error code indicates a failure of the indoor temperature sensor, often leading to erratic temperature readings and inconsistent cooling. This may be caused by issues with the outdoor coil temperature sensor, wiring problems, or faults within the internal fan or control system. Prompt attention is necessary to ensure your unit operates correctly.

Common Symptoms:

  • Error code F4 appears on the unit display
  • Possible shutdown or restricted operation of cooling
  • Fan operation issues or temperature sensing abnormal behavior

Possible Causes

  • Outdoor coil temperature sensor failure or wiring issue (medium)
  • Internal fan or control fault (low)

How to Fix Error F4

DIY Fix Basic system checks before service

  1. Turn off the air conditioner and disconnect power
  2. Wait a few minutes and restore power to see if the F4 clears
  3. Check that outdoor unit coils are clean and unobstructed

Technician Only Inspect outdoor coil sensor and wiring

  1. Access the outdoor unit and locate the coil temperature sensor
  2. Check wiring connections between the sensor and control board for corrosion or disconnection
  3. Test sensor resistance/operation and replace if out of specification
  4. Verify control board inputs for sensor and repair/replace if defective

Parts needed: Outdoor coil temperature sensor, Wiring harness, Control board (if needed)

🛑 When to Call a Pro:
  • If the code persists after a power cycle and basic checks
  • If there are signs of wiring damage or sensor failure
  • If the system does not provide cooling even with apparent normal operation

Technical Specifications

wattage N/A
component Indoor Temperature Sensor
resistance 5-10 kOhms
part_number P123456789
voltage_rating 24V AC

Common Questions

What does F4 error mean on amana air conditioner?

F4 error indicates a failure in the indoor temperature sensor, leading to inconsistent cooling.

Can I fix amana air conditioner F4 error myself?

Yes, you can try basic checks like power cycling the unit and cleaning the outdoor coils before calling for service.

How much does it cost to fix F4 error?

Estimated repair costs range from $150 to $450, depending on parts and labor.

When should I call a technician for F4?

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

Sources & References

Data last verified: 2026-01-25

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