Journal

Diagnosis, written down

Each entry comes out of an actual Woodinville service call. If one of them settles the problem without us, that is a good outcome.

1. July 8, 2026 4 min read Frost Building Up Inside a Sub-Zero Freezer: Reading the Defrost Circuit A sheet of frost on the back wall of a Sub-Zero freezer is a symptom with four common causes, only one of which is expensive. How to tell a door seal problem from a failed defrost heater before you book anyone. freezerdefrostdiagnosticsdoor seal
2. June 17, 2026 4 min read Sub-Zero Wine Cooler Holding the Wrong Temperature in One Zone One zone drifting while the other holds is almost never a compressor failure on a Sub-Zero wine unit. What a four-degree gap between zones actually points at, and what to check before booking a visit in Woodinville. wine storagedual zonediagnosticstemperature drift