What F28 means on your Kenmore dryer (kenmore f28 error)
A kenmore f28 error is a verified Whirlpool code, documented on Whirlpool’s own product-help site and confirmed on Whirlpool-platform code references, meaning the moisture sensor resistance is reading very high (open) on your Whirlpool-built Kenmore dryer (106/110/198/664/665/850-prefix), often pointing to a faulty moisture sensor or a control-board communication problem.
Symptoms
The signs below help confirm you are dealing with this condition rather than a different problem on your Kenmore dryer. You may notice one of them or several together, and they can appear gradually or suddenly after a power event, a wash or cook cycle, a spill, or recent installation or service.
- The display shows F28
- Automatic/sensor-dry cycles run inconsistently or overdry/underdry loads
- The cycle stops mid-dry
- The code reappears across cycles
Common causes
Several different problems 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 Kenmore parts.
- Defective moisture sensor — the metal sensor strips inside the drum are not reading correctly, possibly due to fabric-softener buildup
- Loose wiring connection — at the sensor or main control board
- Defective main control board
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.
- Power the dryer down at the breaker for 5 minutes, then restore power.
- Clean the moisture sensor strips inside the drum, which can be found on many models near the lint filter housing.
- Run a Timed Dry cycle and watch for one minute to confirm the code does not reoccur.
- If F28 returns, book service for sensor testing.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the moisture sensor, main control board, and wiring connections. The correct part for your Kenmore dryer is matched from the model and serial number, and genuine OEM components are fitted through trusted parts suppliers rather than generic substitutes so performance, safety, and the appliance long working life are all protected. Confirming the failed part before ordering avoids replacing more than the problem actually requires.
When to call a technician
F28 that persists after cleaning the sensor strips and resetting needs an experienced technician to test the moisture sensor and main control board on this Whirlpool-built Kenmore dryer. This condition is rated Medium 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. 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. When you book, have your Kenmore dryer model and serial number ready 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.
Related help and Kenmore resources
If the F28 condition keeps returning after these checks, book Kenmore dryer repair, browse our dryer error-code guides and step-by-step repair guides, or schedule service in your area on our locations page. See also the related F29 moisture sensor shorted problem. For full manufacturer specifications and model lookup, visit kenmore.com.
