We performed a full professional diagnostic including:
Electrical testing of compressor and start components
Pressure readings of the sealed system
Visual inspection of evaporator and tubing
Leak detection using nitrogen and electronic tools
The compressor was mechanically healthy, but the sealed system showed signs of refrigerant loss.
The real problem was a leaking evaporator.
Multiple pinhole leaks were found directly in the evaporator coils, causing continuous refrigerant loss.
Additionally, the start relay on the compressor was weak, reducing its ability to start under load.
💡 This is a classic case where replacing the compressor would not fix the real problem.
The sealed system leak had to be resolved first.
The defective evaporator was removed and replaced with a new OEM-compatible unit.
A new high-quality start relay was installed to restore proper compressor startup.
System evacuation, nitrogen pressure test, deep vacuum, and precise refrigerant recharge.
After completing the repair:
Freezer reached target temperature normally
Compressor operates smoothly
No abnormal cycling
System pressure within factory specs
The unit is now operating like new.
Sub-Zero 601F/0
Sub-Zero 601R
Sub-Zero 700 Series
No. Many cooling issues are caused by sealed system leaks or electrical components.
Much cheaper than compressor replacement and often the correct solution.
No. This damages the compressor over time.
Sub-Zero Experts in Bay Area
We specialize in sealed system repairs for premium appliances.
Evaporators, compressors, leak detection, and full diagnostics.
Certified Sub-Zero & Wolf technicians. Professional repair you can trust.
Real repairs. Real reviews. Real technicians.
