LG · Refrigerator (Top Freezer)

LG Refrigerator (Top Freezer) F dH error code

Difficulty: Medium · Cost: $0–$200 · Duration: 8h

The F dH error means your LG refrigerator's freezer compartment defrost cycle timed out before reaching the target temperature. This is the freezer-specific variant of the dH error. F dH points to a problem in the freezer defrost system while r DH on the same models indicates the same issue in the refrigerator compartment. Frost buildup around the defrost components is a common cause and defrosting the unit manually can resolve it. If the error returns after defrosting the defrost heater or sensor will need professional inspection.

Common causes

Excessive frost buildup around the freezer evaporator blocking heat distribution during defrost
Freezer defrost heater has malfunctioned or failed
Freezer defrost thermostat is faulty and not allowing the heater to activate
Freezer defrost sensor is providing incorrect temperature readings

How to fix it

1

Unplug the refrigerator and open the freezer door wide
2

Leave the door open for at least 8 hours in summer or up to 3 days in winter to allow all frost to melt fully
3

Place towels around the unit to absorb water as the frost melts
4

Once fully defrosted plug the unit back in and allow 24 to 48 hours to return to normal temperature
5

If F dH returns after defrosting contact a technician to inspect the defrost heater and sensor