LG Refrigerator Code dS: Defrost Sensor
dS on an LG refrigerator with an LED or LCD temperature display means the defrost sensor is shorted or disconnected. F dS is the freezer defrost sensor and r dS is the refrigerator defrost sensor. Without…
- Code
- dS
- Appliance
- Refrigerator
- Brand
- LG
- Warranty
- 30-day workmanship
What dS means
dS on an LG refrigerator with an LED or LCD temperature display means the defrost sensor is shorted or disconnected. F dS is the freezer defrost sensor and r dS is the refrigerator defrost sensor. Without a good reading the control cannot time defrost cycles correctly, so the evaporator may ice over and cooling can drop. Owners may notice frost in the freezer and temperatures that drift up.
Common causes of dS
- Freezer or refrigerator defrost sensor
- Sensor wiring and connector
- Control board sensor input
1. Note whether the code reads F dS or r dS. 2. Keep both doors closed and check that they seal. 3. Move food that is warming to a cooler. 4. Do not try to remove frost with sharp tools. 5. Request service, since there are no owner steps for dS.
- The letter in front tells us which sensor, but not whether the cause is the sensor, the wire, or the board.
- We test the sensor circuit before recommending parts, and we give a written price first.
- A frosted evaporator may also need a defrost.
Other Refrigerator codes
What do F dS and r dS mean?
F dS is the freezer defrost sensor and r dS is the refrigerator defrost sensor. Knowing which letter appears lets us check the right sensor first.
Why does dS cause frost?
If the defrost sensor reading is lost, the defrost timing can be wrong. The evaporator may not clear and can ice over, which reduces airflow.
Can I replace the sensor myself?
We recommend against it. It sits behind panels, and the code may point to wiring or the board. We test and explain before any work.
Still seeing dS?
A technician diagnoses it on site and gives you the price in writing before any work starts.