Cabinet/access risk, required evidence and service decision
| Cabinet/access risk | Required evidence | Service decision |
|---|---|---|
| Custom door panel or overlay | Wide installation view, hinge reveal check and panel weight symptoms | Plan protected access before approving gasket, hinge or pull-out work. |
| Tight lower grille or toe-kick | Grille, floor transition and model tag area | Allow extra time for airflow checks and avoid forcing trim. |
| Water line behind built-in unit | Water source location, slack estimate and leak location if present | Do not pull the unit until water and floor protection are planned. |
| Older 600/700 series installation | Serial tag, temperature pattern and cabinet clearance | Confirm part path before discussing replacement or sealed-system work. |
| Hillside or gated access window | Neighborhood, parking and staff/property-manager contact path | Route the visit with a realistic arrival window and access notes first. |
Repair path, planning range and proof required
| Repair path | Planning range | What must be proven |
|---|---|---|
| Diagnostic / service call | $195-$285 | Model, temperatures, airflow, door seal, alarm or display state. |
| Gasket, frost line or hinge correction | $520-$1,150 | Gasket profile, cabinet pressure, hinge alignment and frost location. |
| Ice maker or water path repair | $310-$985 | Water pressure, fill tube, valve response, filter status and module timing. |
| Evaporator or condenser fan motor | $365-$815 | Fan movement, bearing drag, coil load from coastal air and amp-draw evidence. |
| Control, sensor or thermistor path | $395-$1,450 | Electrical proof, error history, thermistor readings and serial range. |
| Compressor or sealed system | $1,850-$4,400 | Amp draw, condenser airflow, pressure evidence, leak suspicion and cabinet access conditions. |
Planning ranges are published for decision support. The final quote depends on model, serial range, part availability, cabinet access and diagnosis.
What not to approve before diagnosis
- A compressor or sealed-system replacement from a symptom description alone.
- A control board before the model/serial range and electrical evidence are checked.
- A cabinet pull-out before floor protection, water/electrical slack and panel clearance are documented.
- A full replacement recommendation without comparing repair range, part lead time and cabinet disruption.
Symptom pattern table
The strongest not-cooling page separates patterns. A fresh-food side at 48F with a freezer near 3F is different from both sections warming. A frost line near a gasket is different from snow on an evaporator cover. Fan noise, a hot grille, water under the unit or a display alarm can change the first test.
| Pattern | Likely path | Safe homeowner evidence |
|---|---|---|
| Fresh-food warm, freezer OK | Airflow, evaporator fan, damper, sensor or door leak. | Record both temperatures and listen for fan response. |
| Both sections warm | Power, condenser airflow, control or sealed-system suspicion. | Display state, grille area and temperature trend. |
| Cycles but never recovers | Condenser load, fan drag, gasket leak or sealed-system issue. | Note run time, grille heat and recent cleaning. |
| Frost or snow pattern | Gasket, defrost, drain or airflow restriction. | Record before melting or wiping. |
| Fan noise | Fan obstruction, ice buildup or motor drag. | Record sound location and when it starts. |
| Error or alarm | Control, sensor, door or temperature event. | Record display before reset. |
Safe checks before service
Safe checks are limited: verify the doors are closed, temperature settings have not changed, the grille is not blocked, the appliance has power and the problem did not begin immediately after a power event, cleaning or filter change. Do not remove cabinet panels, force a toe-kick or scrape frost with a blade.
If food safety is at risk, protect the food first. If the unit is drifting but stable enough to observe, keep the temperature log because recovery behavior can separate airflow and sealed-system paths.
Local cabinet note
In Hillsborough estate kitchens, a not-cooling quote should include cabinet access conditions because labor risk can change when a built-in unit requires protected pull-out before pressure testing. Lower Hillsborough may route faster, while Upper Hillsborough and Carolands appointments may need access and floor protection details before arrival.
How to check a Sub-Zero that is not cooling before service
Safe homeowner checks for a Hillsborough built-in that is warming, done before a technician arrives.
- Read both temperatures. Record actual fresh-food and freezer readings rather than relying on the display set point.
- Stop resetting. Leave alarms and history intact; repeated resets erase clues that separate airflow from sealed-system faults.
- Check doors and grille. Confirm the door closes cleanly, settings are unchanged and the lower grille airflow is not blocked.
- Identify the pattern. Fresh-food-only, both compartments warm, or a frost line each point to a different first test.
- Record evidence and book. Protect food if at risk and book the $195-$285 diagnostic with your readings ready.
