FROST BUILDUP ON THE FREEZER EVAPORATOR THAT RESTRICTS AIRFLOW OR REDUCES COOLING PERFORMANCE
Sub-Zero Refrigerator Defrost Heater Assembly 7016048, Fixes Frost buildup on the freezer evaporator that restricts airflow or reduces cooling performance
Genuine Sub-Zero defrost heater assembly for model 532 refrigerators of all serial numbers and model 632 refrigerators before serial number 1810000.
Part 7016048Replaces 4322130Sub-Zero
Confirm your full appliance model number before ordering.
Is This the Right Part?
Part Number7016048
Replaces4322130
ManufacturerSub-Zero
Appliance TypeRefrigerator
Part TypeDefrost Heater Assembly
✅ Cross Reference Information
Current Part Number7016048
Verified Previous OEM Numbers4322130
Common Symptoms
- Excessive frost or ice accumulating on the freezer evaporator
- Restricted freezer airflow caused by an iced evaporator
- Poor cooling performance associated with an incomplete defrost cycle
Check Before Replacing
- With power disconnected, inspect the evaporator area for excessive frost that may indicate a defrost-system problem.
- Test the heater for electrical continuity only if qualified to perform appliance electrical diagnostics.
- Verify the appliance model and serial number before condemning or ordering the heater.
Pro Tip
For model 632, verify the serial number carefully: units beginning with serial number 1810000 use part 4324690 instead.
Part Details
Part Number7016048
Part TypeDefrost Heater Assembly
ManufacturerSub-Zero
Appliance TypeRefrigerator
Primary FunctionHeats the freezer evaporator during the defrost cycle to melt frost buildup.
Installation Notes
- Disconnect electrical power before servicing the refrigerator.
- Access to the freezer evaporator and related covers/components is required for heater removal and installation.
- Follow the model-specific Sub-Zero service procedure; heater placement and clips must be restored correctly on the evaporator.
Verified Compatible Models
Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.
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Address
101 Trillium Dr
Kitchener, Ontario N2E 1W8
Kitchener, Ontario N2E 1W8
Phone
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