❄️Refrigerator

Whirlpool · Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator

Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator 3 Error Fix: Defrost Timer/Board Failure

Diagnostic flash code: the adaptive defrost control board or defrost timer has failed. Modern Whirlpool refrigerators use an adaptive defrost control that learns how often defrost is needed based on door openings, compressor run time, and temperature. If this board fails, defrost cycles may never initiate (leading to ice buildup) or may run too frequently (wasting energy and warming the freezer). The adaptive defrost control is a small board, usually mounted on the rear of the refrigerator near the compressor. Replace the board.

warning2 fixes available✨ Free fix available

Quick Answer

Error 3 on the Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator means: Defrost Timer/Board Failure. The top-ranked community fix is “Replace the Adaptive Defrost Control Board” (hard difficulty, ~90 min, DIY cost: $30-$50). 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: $180-$250.

Other Whirlpool Models with Error 3

Whirlpool WRF535SWHZ 25 cu. ft. French Door Refrigerator

refrigerator · 2 fixes

Whirlpool WRT318FZDW 18 cu. ft. Top Freezer Refrigerator

refrigerator · 2 fixes

Other Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator Error Codes

Defrost Bimetal/Thermostat Failure

2 fixes

Defrost Heater Failure

2 fixes

Communication Fault

2 fixes

MECH-COMPRESSOR

Compressor Click-and-Buzz Failure

2 fixes

MECH-ICE-BUILDUP

Frost/Ice Buildup in Freezer

2 fixes

MECH-ICE-MAKER

Ice Maker Not Making Ice

2 fixes

MECH-NOISY

Refrigerator Making Loud Noise

2 fixes

MECH-NOT-COOL

Refrigerator Not Cooling

2 fixes

People Also Ask About Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator Error 3

What does error code 3 mean on a Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator?

Error code 3 on the Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator means: Defrost Timer/Board Failure. Diagnostic flash code: the adaptive defrost control board or defrost timer has failed. Modern Whirlpool refrigerators use an adaptive defrost control that learns how often defrost is needed based on door openings, compressor run time, and temperature. If this board fails, defrost cycles may never initiate (leading to ice buildup) or may run too frequently (wasting energy and warming the freezer). The adaptive defrost control is a small board, usually mounted on the rear of the refrigerator near the compressor. Replace the board.

How do I fix error code 3 on my Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator?

The most successful fix is "Replace the Adaptive Defrost Control Board" (hard difficulty, ~90 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code 3 on a Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator error 3 myself?

Yes — the top-ranked community fix ("Replace the Adaptive Defrost Control Board") is rated hard difficulty and takes about 90 minutes. Tools needed: Phillips screwdriver, Multimeter.

How much does it cost to repair Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator error 3?

DIY cost: $30-$50. Professional repair typically costs $180-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator have?

The Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator has 8 other known error codes, including: 1 (Defrost Bimetal/Thermostat Failure), 2 (Defrost Heater Failure), CF (Communication Fault), MECH-COMPRESSOR (Compressor Click-and-Buzz Failure), MECH-ICE-BUILDUP (Frost/Ice Buildup in Freezer), and 3 more.

Which other Whirlpool models have the 3 error?

Error code 3 also appears on 2 other Whirlpool models: Whirlpool WRF535SWHZ 25 cu. ft. French Door Refrigerator, Whirlpool WRT318FZDW 18 cu. ft. Top Freezer Refrigerator. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator have?

The Whirlpool Whirlpool WRS331SDHM 21 cu. ft. Side-by-Side Refrigerator has 8 other known error codes:

1 — Defrost Bimetal/Thermostat Failure (2 fixes)
2 — Defrost Heater Failure (2 fixes)
CF — Communication Fault (2 fixes)
MECH-COMPRESSOR — Compressor Click-and-Buzz Failure (2 fixes)
MECH-ICE-BUILDUP — Frost/Ice Buildup in Freezer (2 fixes)
MECH-ICE-MAKER — Ice Maker Not Making Ice (2 fixes)
MECH-NOISY — Refrigerator Making Loud Noise (2 fixes)
MECH-NOT-COOL — Refrigerator Not Cooling (2 fixes)

Which other Whirlpool models have the 3 error?

Error code 3 also appears on 2 other Whirlpool models:

Whirlpool WRF535SWHZ 25 cu. ft. French Door Refrigerator (refrigerator) · 2 fixes
Whirlpool WRT318FZDW 18 cu. ft. Top Freezer Refrigerator (refrigerator) · 2 fixes

Ad Space — banner

Replace ADSENSE_PUBLISHER_ID in AdUnit.tsx