Case notes · how Mill Valley repairs are diagnosed
These case notes show how a Sub-Zero complaint is narrowed on a real visit: neighborhood context, model family, symptom, tests performed, outcome and time window. They walk through the reasoning behind each repair rather than just naming a part.
The method is the same every time: temperatures, airflow, amp draw, gasket check, water fill, part evidence and post-repair verification — measured before anything is condemned.
Quick answer
Each case note records the measured readings, the wrong assumption it ruled out, and the verification step that closed the repair.
Case-note format
| Neighborhood | Model family | Symptom | Tests performed | Outcome | Time window |
|---|---|---|---|---|---|
| Homestead Valley | 600-series built-in | Fresh-food warm, freezer holding | Temperatures, condenser airflow, evaporator fan behavior | Coil clean plus fan path; no compressor assumption | 1-3 hours |
| Strawberry | Wine column | Lower zone 4F warm | Probe vs display, damper response, gasket check | Thermistor/damper path after logged drift | 1-4 hours |
| Cascade Canyon | Classic built-in | Frost line and damp frame | Gasket compression, hinge alignment, cabinet fit | Model-matched gasket or alignment correction | 1-3 hours |
| Tam Valley | Undercounter ice maker | Hollow cubes and slow harvest | Fill volume, inlet valve, fill tube, module cycle | Water-side repair, not sealed system | 1-3 hours |
| Blithedale Canyon | Built-in refrigerator | Recurring high-temp alarm | Serial-specific code, condenser and fan checks | Airflow path verified before board quote | 1-4 hours |
Evidence on every visit. Each repair is documented with photo captions that state what the image shows: the model tag, condenser condition, temperature verification, water-fill test or OEM part label. You keep that record after we leave.
Recent case notes
Customer names and street addresses are kept private; each note focuses on the symptom, the tests run and the verified outcome.
Reviews
“Another company had already quoted us a new compressor when our 632 in Homestead Valley climbed to 49°F up top with the freezer still cold. These folks measured first, found the real culprits — a salt-dusted condenser and a dying evaporator fan — and cleaned and swapped them. It has held 37°F ever since, no sealed-system work.”
— Daniel R., Homestead Valley 94941“Our 424 wine column crept to 58°F against a 55°F setpoint after a damp spell in Strawberry, and I was worried about the bottles. They logged a probe across a full cycle before quoting and traced it to a zone thermistor and a sticky damper. Replaced both with OEM parts and the collection was never put at risk on a guess.”
— Priya M., Strawberry 94941“Our built-in freezer door down in Tam Valley was sweating and forming a frost line through the damp months. They found the door slightly out of alignment, corrected it and fitted a model-matched OEM gasket, photographing every reading before and after. The case-note record they left behind was genuinely useful.”
— Ellen T., Tam Valley 94941Case note FAQ
Each note records the neighborhood, model family, symptom, the temperatures and tests performed, the outcome and the time window. It shows how the repair was reasoned out, not just which part was changed.
Yes. You keep a record with model-tag proof, temperature readings, condenser or evaporator photos, part evidence and post-repair verification. That record also helps if the same cabinet has a future symptom.
Often the path is similar, but the cause is always confirmed on-site against your serial number. A board, fan or gasket that fixed a neighbour's unit may be the wrong variant for yours.
Most visits run 1-4 hours depending on access and whether the part is on the van. If a serial-specific fan, board or valve has to be ordered, the repair is finished on a second visit.
Yes. You approve a written estimate before work begins and the diagnostic fee is credited toward it. Sealed-system and control-board parts are only quoted after measured electrical or pressure evidence.
