What causes the AF code on a GE refrigerator?

6-month air filter timer expired: Timer counts down regardless of actual filter condition. Filter never replaced after unit purchase: Common on used units — owners don't realize an air filter exists.

GE · Refrigerator Minor

AF — GE Refrigerator — Replace Air Filter Reminder

GE refrigerators with a FreshFlow air filter show a replace-air-filter reminder about every 6 months. This is routine maintenance, not a fault — replace the carbon air filter and reset the indicator. (GE signals this as a replace-filter message/light; if your display shows a distinct "AF" code, confirm it against your model manual.) Cooling is unaffected.

Keep using it?: Yes — fix when convenient
DIY difficulty: Moderate
Verified against: products.geappliances.com ↗

How to fix it

Open the FreshFlow air filter housing (top rear of fresh-food compartment).
Replace with a genuine GE Odor Filter (Cafe Profile FreshFlow).
Press and hold the 'Reset Filter' button 3 seconds until the AF clears.

Why it happens

Typical signs: AF or 'Air' icon on display · Stale odor in fresh-food compartment · Light indicator on filter cover lit

6-month air filter timer expired Timer counts down regardless of actual filter condition.
Filter never replaced after unit purchase Common on used units — owners don't realize an air filter exists.

Replace your water filter

A clogged or overdue water filter is a common cause of low water and ice flow on GE refrigerators — they are meant to be changed about every 6 months. The OEM-style filter that fits most GE refrigerators is the XWF ($45-55 OEM, $18-28 compatible).

GE XWF refrigerator water filter OEM water filter
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Not sure which filter fits your model? See the full compatibility guide →

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

GE FreshFlow Odor Filter (CAFFRESH) Common replacement
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Related repair guides

GE Refrigerator Water Filter Guide (MWF, XWF & More) →Refrigerator Ice Maker Not Making Ice — Causes & Fix →Refrigerator Water Dispenser Slow or Not Working — Fixes →Refrigerator Water Tastes Bad or Smells — Causes & Fix →

More GE refrigerator codes

CC CC — Fresh-food temperature out of range CI CI — Check Ice Maker dE dE — Defrost system fault dF dF — Defrost cycle failure E1 E1 — Not in GE's Official Fault-Code List E2 E2 — Not in GE's Official Fault-Code List

All GE codes → All refrigerator codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: products.geappliances.com.