Kenmore Refrigerator Error Code r dH

The r dH code means the refrigerator compartment defrost cycle failed to complete properly. Specifically, 50 minutes passed after the defrost cycle started and the defrost sensor never reached 40°F (5°C). The most common causes are a blown thermal fuse, a failed defrost heater, a faulty relay, or a clogged drain.

Resetting the refrigerator may temporarily clear the code from the display, but it will return if the underlying problem is not fixed. The control board triggers r dH based on a measurable failure condition in the defrost circuit, so clearing the code without repairing the root cause will not restore normal defrost operation.

Repair costs depend on which component has failed. A thermal fuse is typically an inexpensive part, with parts and labor ranging from around $75 to $150. A defrost heater replacement generally runs between $100 and $200 including labor. If the control board relay or the full board needs replacement, costs can range from $150 to $350 or more depending on the specific model and service rates in your area.

Some parts of the diagnosis are DIY-friendly, such as manually clearing a frozen drain or testing the thermal fuse and heater for continuity with a multimeter. However, replacing the thermal fuse, heater element, or a relay on the control board requires comfort with appliance disassembly and electrical components. If you are not experienced with these repairs, a qualified technician is recommended.

Continuing to run the refrigerator with an active r dH code is not recommended for extended periods. Without a functioning defrost cycle, frost will accumulate on the evaporator coils and progressively reduce cooling efficiency. This can lead to temperature fluctuations in the refrigerator compartment and potential food spoilage.