The notebook
Faults worth understanding before you call.
Written after the visit rather than before it. If one of these gets your unit holding temperature again without us, that is a good outcome.
- Sub-Zero 590 Parts Diagram: Start With the Serial Tag To get the right Sub-Zero 590 parts diagram, copy the model and serial number from the tag inside the freezer door first. A 590 is a 500 Series unit made between 1987 and 2003, and its parts changed during that run.
- Sub-Zero Dual Refrigeration: Two Systems, Two Sets of Symptoms Dual refrigeration means a Sub-Zero runs two separate cooling systems, one for fresh food and one for the freezer, each with its own compressor, evaporator and fan, so the compartments never share air. That is why one side can turn warm or wet while the other stays fine.
- Sub-Zero Ice Maker Producing Cloudy, Hollow Cubes: Reading the Shape Hollow cubes mean less water reached the mould, cloudiness comes from what was dissolved in the supply, and a fused slab points at release timing or a bin nobody empties. Read the cube first, then work back through the stop valve, the filter and the water itself.
Next step
Still not holding temperature?
Describe what it is doing and you will be told on the phone whether it is worth a visit.
Answered 24/7 · on the road 8:00 am – 8:00 pm, seven days · flat $95 service call, credited against an approved repair
What the repair itself costs
Flat $95 service call covering the visit and full diagnosis, credited against the repair once you approve it. Ranges, not quotes — your figure is agreed before anything is taken apart.
- Door gasket or seal replacement
- $280 – $810
- Evaporator or condenser fan motor
- $300 – $610
- Defrost heater, thermostat or sensor
- $300 – $690
- Ice maker, water valve or supply line
- $270 – $660
- Electronic control board
- $490 – $850
- Compressor or sealed-system repair
- $1,000 – $2,260