Sub-Zero 427R Lower Refrigerator Heat Exchanger
Sealed-system heat exchanger for the lower refrigerator compartment
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OEM part description
Genuine Sub-Zero heat exchanger for the 427R lower refrigerator compartment. This sealed-system tubing assembly works with the lower refrigerator evaporator system and transfers heat between refrigerant lines as part of normal refrigeration operation.
Part details
The lower refrigerator section depends on its evaporator and heat exchanger for proper cooling. A leaking, restricted, kinked, or damaged heat exchanger can result in refrigerant loss, reduced cooling, abnormal system pressures, or excessive compressor operation.
Specifications / Important Notes:
- Part Type: Refrigerator heat exchanger
- Model Fitment: 427R
- Location: Lower refrigerator compartment
- System: Refrigerator sealed refrigeration system
- Refrigerator Section: Yes
- Wine Compartments: No
- Function: Transfers heat between refrigerant lines
- Installation: Professional sealed-system refrigeration service required
- Brand: Genuine Sub-Zero
Tech Tip: If only the lower refrigerator compartment has a cooling problem while the wine-storage compartments operate normally, diagnose the refrigerator sealed-system circuit separately. Inspect the evaporator and heat-exchanger tubing for signs of refrigerant leakage, restriction, or physical damage before replacement.