Amana Dryer Error Code F:28

F:28 indicates that the moisture sensor strip circuit is reading as open, meaning there is no electrical continuity detected through the sensor system. This code only appears during Diagnostic Test Mode and will not display during a standard drying cycle. It points to a fault in the sensor bars, the connecting wiring, or the control board input.

Because F:28 only appears in Diagnostic Test Mode and not during normal operation, a power reset will exit the diagnostic mode and the code will no longer display. However, resetting does not repair the underlying open circuit fault. If the root cause is not addressed, the fault will still be present and will reappear when the diagnostic test is run again.

Repair costs vary depending on the specific failed component. If the fix is simply cleaning the sensor bars or reseating a connector, the cost may be minimal. Replacing the moisture sensor strip typically runs in the range of $20 to $60 for the part, while a control board replacement can cost significantly more, often ranging from $100 to $300 or higher depending on the model. Professional labor charges will add to the total.

Start by running TEST #5 as outlined in the Amana diagnostic procedure to systematically isolate the fault. Inspect the moisture sensor bars inside the drum for damage and clean them with rubbing alcohol. Check all wiring connectors between the sensor and the control board for corrosion or looseness. If the bars or wiring are damaged, those components will need to be replaced.

Since this code only surfaces in Diagnostic Test Mode, the dryer may appear to operate normally in regular use. However, a failed moisture sensor means the dryer cannot accurately detect when clothes are dry, which can lead to over-drying, wasted energy, and potential damage to fabrics. It is best to diagnose and repair the fault before continued regular use.