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Amana Dryer F28 — Open moisture sensor on an older Amana dryer.

Complete diagnostics and troubleshooting guide for Amana dryer error code Dryer F28. Learn what it means, what causes it, and whether you need professional repair.

Severity Low Repair Mixed Components Moisture sensor bars, harness, connector, control board

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Dryer F28 at a glance.

Error code Dryer F28
Appliance type Dryer
Severity Low
Repairability Mixed
Affected components Moisture sensor bars, harness, connector, control board

Understanding error code Dryer F28.

Open moisture sensor on an older Amana dryer.

What F28 means on your Amana dryer (amana f28 error)

A amana f28 error on an Amana dryer means an open moisture sensor on an older numeric-code dryer — the moisture sensor circuit reads open, so the AutoDry System cannot judge dryness.

Symptoms

The signs below help confirm you are dealing with this condition rather than a different fault on your Amana dryer. You may notice one of them or several together, and they can appear gradually or suddenly after a power event, a cleaning or self-clean cycle, a spill, or recent installation or service.

  • “F28” shows
  • Auto cycles stop too early or run too long
  • Timed dry still works
  • The sensor bars may be dirty

Common causes

Several different faults can produce these symptoms. Working through the most likely causes in order separates a quick owner-level check from a problem that needs trained service and the correct Amana parts.

  • Open moisture sensor — the circuit is broken
  • Filmed sensor bars — residue insulates the bars
  • Loose connector or harness — the signal is lost
  • Control input fault — the board cannot read the sensor

Troubleshooting steps you can try

Work through these checks in order before calling for service. Stop wherever you are unsure, or where mains voltage, gas, a hot oven cavity, water, or a sealed component is involved, and hand the rest to a qualified technician.

  1. Wipe the moisture sensor bars with a little rubbing alcohol.
  2. Use timed dry meanwhile.
  3. Turn the dryer off at the breaker for 30 to 60 seconds, then restore power.
  4. If “F28” persists after cleaning, leave it for service.

Parts a technician may replace

Depending on what the diagnosis shows, a technician may inspect, test, or replace the moisture sensor bars, harness, connector, and control board. The correct part for your Amana dryer is matched from the model and serial number, and genuine OEM components are fitted through trusted parts suppliers rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.

When to call a technician

F28 that persists after cleaning the bars needs a technician to test the moisture sensor and wiring. When the fix calls for trained service, you can schedule an appointment and an experienced, skilled technician will diagnose and repair it.

As an independent repair service we are not affiliated with the manufacturer, and we work only with experienced, skilled technicians and genuine OEM parts from trusted parts suppliers, with our workmanship backed by a 30-day labor warranty. This condition is rated Low severity, so there is no emergency — but if the same F28 keeps returning after the checks above, a technician should confirm the cause before any part is replaced. When you book, have your Amana dryer model and serial number ready — they are usually on a label inside the door, behind a drawer, or on the side panel — so the right part for your exact build can be matched before the visit and the F28 condition resolved in as few trips as possible.

Browse other Amana Dryer error-code guides, read about Amana Dryer repair, look up your unit in the Amana models reference, or schedule an appointment. Or see the related F29 shorted moisture sensor. For full manufacturer specifications and model lookup, visit the manufacturer at amana.com.

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