❄️Refrigerator

FROST BUILDUP

KitchenAid · KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator

KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator FROST BUILDUP Error Fix: Frost Buildup in Freezer

Excessive frost or ice accumulates on the back wall of the freezer or around the evaporator coils. Indicates the automatic defrost system is not working. Manually defrost (unplug 24 hours). Then diagnose: check defrost heater, defrost thermostat, and adaptive defrost control board. On KRFC300ESS, also check the freezer drawer gasket seal.

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error FROST BUILDUP on the KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator means: Frost Buildup in Freezer. The top-ranked community fix is “Test and Replace Defrost System Components” (hard difficulty, ~90 min, DIY cost: $20-$40). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · refrigerator

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many refrigerator repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $150-$250.

Other KitchenAid Models with Error FROST BUILDUP

KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator

refrigerator · 2 fixes

Other KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator Error Codes

Communication Failure

2 fixes

Compressor Overload / Overcurrent

2 fixes

Defrost Failure

2 fixes

Defrost Heater Open Circuit

2 fixes

DISPENSER SLOW

Water Dispenser Slow or Not Working

2 fixes

DOOR GASKET WORN

Door Gasket Not Sealing

2 fixes

Defrost Thermostat Fault

2 fixes

Fresh Food Fan / Diffuser Fan Failure

2 fixes

People Also Ask About KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator Error FROST BUILDUP

What does error code FROST BUILDUP mean on a KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator?

Error code FROST BUILDUP on the KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator means: Frost Buildup in Freezer. Excessive frost or ice accumulates on the back wall of the freezer or around the evaporator coils. Indicates the automatic defrost system is not working. Manually defrost (unplug 24 hours). Then diagnose: check defrost heater, defrost thermostat, and adaptive defrost control board. On KRFC300ESS, also check the freezer drawer gasket seal.

How do I fix error code FROST BUILDUP on my KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator?

The most successful fix is "Test and Replace Defrost System Components" (hard difficulty, ~90 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

Is error code FROST BUILDUP on a KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator error FROST BUILDUP myself?

Yes — the top-ranked community fix ("Test and Replace Defrost System Components") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle nose pliers.

How much does it cost to repair KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator error FROST BUILDUP?

DIY cost: $20-$40. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator have?

The KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator has 8 other known error codes, including: CF (Communication Failure), CO (Compressor Overload / Overcurrent), dF (Defrost Failure), dH (Defrost Heater Open Circuit), DISPENSER SLOW (Water Dispenser Slow or Not Working), and 3 more.

Which other KitchenAid models have the FROST BUILDUP error?

Error code FROST BUILDUP also appears on 1 other KitchenAid model: KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator have?

The KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator has 8 other known error codes:

CF — Communication Failure (2 fixes)
CO — Compressor Overload / Overcurrent (2 fixes)
dF — Defrost Failure (2 fixes)
dH — Defrost Heater Open Circuit (2 fixes)
DISPENSER SLOW — Water Dispenser Slow or Not Working (2 fixes)
DOOR GASKET WORN — Door Gasket Not Sealing (2 fixes)
dt — Defrost Thermostat Fault (2 fixes)
FC — Fresh Food Fan / Diffuser Fan Failure (2 fixes)

Which other KitchenAid models have the FROST BUILDUP error?

Error code FROST BUILDUP also appears on 1 other KitchenAid model:

KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator (refrigerator) · 2 fixes

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