Error code · Refrigerator

Kenmore 111 Bottom-Freezer Refrigerator Code FD Lo / rD Hi: Defrost Sensor Readings

Medium · inspection needed

Code: FD Lo / FD Hi / rD Lo / rD Hi
Appliance: Refrigerator
Brand: Kenmore
Warranty: 30-day workmanship

What FD Lo / FD Hi / rD Lo / rD Hi means

Kenmore bottom-freezer refrigerators with 111 model numbers, a platform whose maker we could not document, use these four displays for the defrost sensors. FD marks a freezer defrost sensor failure and rD a refrigerator defrost sensor failure, with Lo or Hi giving the direction. The control cannot time defrost properly, so you may see frost or warm spots. Cooling can also feel uneven from shelf to shelf.

Common causes of FD Lo / FD Hi / rD Lo / rD Hi

Freezer or refrigerator defrost sensor
Sensor wiring and connector
Control board input

✓ One safe check you can try

1. Note the exact display, for example FD Hi or rD Lo. 2. Check that the doors seal and nothing props them open. 3. Look for frost on the back wall inside and keep vents clear. 4. Leave panel removal and meter work to us.

! Why to stop there

Whether the sensor sits outside its expected resistance range or the wiring is the problem
We test the circuit before replacing a sensor
Lo versus Hi helps us decide whether to look for an open or a short

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Refrigerator codes

SH in Freezer DisplayKenmore 253 French-Door Refrigerator Showing SH in the Freezer Display: Shorted Sensor SH in Refrigerator DisplayKenmore 253 French-Door Refrigerator Code SH in Refrigerator Display: Shorted Fresh-Food Sensor SY CE / SY CFKenmore 253 French-Door Refrigerator Code SY CE / SY CF: Control and Display Communication SY EFKenmore 253 French-Door Refrigerator Code SY EF: Evaporator Fan Circuit F1 Lo / F1 HiKenmore 111 Bottom-Freezer Refrigerator Code F1 Lo / F1 Hi: Freezer Temperature Sensor F3 / r3Kenmore 111 Bottom-Freezer Refrigerator Code F3 / r3: Defrost Heater i5 Lo / i5 Hi / iD Lo / iD HiKenmore 111 Bottom-Freezer Refrigerator Code i5 / iD: Ice Maker and Ice Room Sensors Main Board LED 1, 2 or 3 FlickersKenmore 111 Top-Freezer Refrigerator: Main Board LED Flickers 1, 2 or 3 Sensor Failure

FD Lo / FD Hi / rD Lo / rD HiFD Lo / FD Hi / rD Lo / rD Hi questions

What is the difference between FD and rD?

FD refers to the freezer defrost sensor and rD to the refrigerator one. The Lo or Hi suffix tells us the direction of the bad reading, and together they decide which sensor we test first.

Do I need to replace the whole control?

Rarely. The sensor or its wiring is the usual place to look, and the board is checked last. We explain what we found and what it costs in writing before any part is ordered.

How soon should this be repaired?

Soon. Without good defrost data the control may defrost too little or too often, so frost builds and cooling slowly declines. Watch food temperatures, and call us if either section warms noticeably.

Book a visit

Still seeing FD Lo / FD Hi / rD Lo / rD Hi?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 955-7152