Whirlpool WRB329DMBM Repair Guide
A bottom freezer that puts fresh food at eye level with the freezer in a drawer below. Bottom freezers have one signature fault above all others. The defrost drain freezing shut.
Whirlpool WRB329DMBM is a bottom freezer refrigerator, 18.7 cu ft refrigerator sold 2017 to present. Its most common repair is sheet of ice across the freezer drawer floor, usually $130 to $280.
- 5 common problems with causes, fixes and costs below.
- 2 error codes decoded.
- A refrigerator like this lasts about 10 to 15 years.
- OEM part numbers listed and checked against two suppliers.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Sheet of ice across the freezer drawer floor | Defrost drain frozen shut, the signature bottom freezer fault | Clear the drain and install the heater clip | not listed | $130 to $280 |
| Fresh food warming, freezer cold | Evaporator fan motor failure | Replace evaporator fan | WPW10128551replaces W10128551, 8170894 | $200 to $400 |
| Freezer drawer will not close flush | Rail misalignment or ice under the basket | Clear ice. Realign or replace rail | not listed | $140 to $320 |
| Warms and recovers periodically | Defrost heater or thermostat | Replace heater and bimetal | WP12729123⚠ Heater only, no defrost thermostat number is published here because the commonly cited one does not verify for this chassis | $220 to $450 |
| Loud clicking every few minutes | Start relay failing | Replace relay and overload | not listed | $150 to $320 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| Diagnostic mode | Door switch sequence enters service mode |
| Cooling off | Cooling disabled at the panel, check before diagnosing |
Tech notes
Clear the drain and fit the heater clip as one job on any bottom freezer with water at the front of the drawer. Clearing the ice alone lasts about three months and reads to the customer as a failed repair.
Sources
Where the safety, regulatory and warranty claims on this page come from. Repair costs are our own figures based on Arizona market rates and OEM parts pricing.
- Food Safety During a Power Outage FoodSafety.gov (U.S. Dept. of Health & Human Services) The 40°F threshold and the 2-hour rule for discarding perishable food.
- Stationary Refrigeration and Air Conditioning (Section 608) U.S. Environmental Protection Agency Refrigerant handling rules and the certification required to open a sealed system.
- Section 608 Technician Certification U.S. Environmental Protection Agency Which certification type covers household refrigerators and freezers.
Cost guides for this machine’s common repairs
DIY step by step instructions for this model
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