Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Frigidaire Refrigerator Defrost Heater Assembly Replacement?

The most frequently replaced parts for Frigidaire Refrigerator Defrost Heater Assembly Replacement are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Frigidaire Refrigerator Defrost Heater Assembly Replacement a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Frigidaire Refrigerator Defrost Heater Assembly Replacement

Q: What does Frigidaire Refrigerator Defrost Heater Assembly Replacement mean?

Frost buildup, warm fridge, and ice on evaporator coils signal a failed defrost heater. Replacing the assembly restores automatic defrosting.

Q: How do I fix Frigidaire Refrigerator Defrost Heater Assembly Replacement?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Frigidaire Refrigerator Defrost Heater Assembly Replacement — What This Part Does

The defrost heater assembly sits on or under the evaporator coils in the freezer section. During the automatic defrost cycle, the heater element warms up to melt frost and ice off the evaporator so air can flow freely and the refrigerator can cool properly. Without a working heater, frost builds up and blocks airflow, leading to cooling problems.

The heater assembly fails when the element burns out, wire connectors corrode or disconnect, or the mounting straps break and let the heater lose contact with the evaporator. Age, repeated thermal cycling, and moisture exposure all contribute to element failure. A bad heater won’t melt frost during the defrost cycle, so ice accumulates until the evaporator is completely blocked.

Jump to Replacement Steps

Signs It Needs Replacing

Heavy frost or ice buildup on evaporator coils When you remove the freezer rear panel, you see thick frost covering the coils instead of bare metal.
Freezer runs but refrigerator section is warm The compressor cycles normally but the fresh-food compartment temperature climbs because blocked airflow prevents cold air from reaching it.
Frost or ice inside the freezer walls or on food Excess moisture freezes on interior surfaces because the defrost cycle isn’t clearing the evaporator.
Refrigerator runs continuously without shutting off The unit never reaches temperature because frost-blocked coils can’t transfer heat, so the compressor stays on.
Water pooling under crisper drawers or on floor When frost finally melts during an off cycle, the drain system can overflow because the blockage was too large.
Evaporator fan sounds labored or scrapes ice You hear grinding or rattling from the freezer because fan blades are hitting built-up ice on the coils.

How to Replace It

Unplug the refrigerator from the wall outlet to cut all power before starting any work.
Remove the ice bin, freezer shelves, and any drawer rails or clips that block access to the rear freezer wall panel.
Unscrew and pull off the rear interior evaporator cover panel to expose the evaporator coils, heater assembly, and wiring harnesses.
Locate the defrost heater assembly attached to or beneath the evaporator coils, then disconnect the wire connectors from the heater leads and note the ground wire attachment point.
Release the retaining straps or clamps holding the heater against the evaporator and carefully slide the old heater assembly out of position.
Compare the new heater assembly to the old one to confirm the shape, lead routing, and mounting points match your model.
Slide the new heater assembly into position on the evaporator, secure it with the retaining straps or clamps, and reconnect the wire harness and ground wire exactly as they were removed.
Reinstall the evaporator cover panel, drawer rails, shelves, and ice bin in reverse order, making sure all clips and screws are tight.
Plug the refrigerator back in and monitor the unit through one full defrost cycle to verify frost melts off the evaporator and cooling returns to normal.

The Part You Need

Part	Notes
Frigidaire defrost heater assembly	Amazon \| Find your refrigerator model and serial number on the plate inside the fresh-food compartment or on the left interior wall. Common Frigidaire heater part numbers include 242044020, 242044113, 242044021, 242044008, and 216730700 depending on your model, so cross-reference your model number with the manufacturer or an appliance parts supplier to get the correct assembly.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you’re uncomfortable working with electrical connectors inside the freezer or if frost buildup returns after you replace the heater, call a technician to test the defrost timer, control board, and temperature sensors. A pro can also check for sealed-system leaks or compressor problems if the refrigerator still won’t cool properly after the heater is replaced. If you see any damaged or melted wiring near the heater, stop work and have a qualified appliance repair technician inspect the entire defrost circuit before you reinstall panels and restore power.