Diagnostic guides
What the symptom is telling you
Written from Los Angeles service calls on built-in Sub-Zero refrigeration. If one of these gets you to the answer without a visit, that is a good outcome.
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121 Degrees at Pierce College: Ambient Temperature Limits, Garage Refrigerators and Ice Production in Woodland Hills
Written by Elena Sandoval
The Woodland Hills station at Pierce College reached 121°F in September 2020, and refrigeration kept above its rated ambient fails in a set order: ice production first, then freezer drift, then the condenser fan motor, then the sealed system.
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Sub-Zero Ice Maker Output Dropping: Heat, Hard Water and Scale
Written by Elena Sandoval
A clear-ice maker that has slowed to a handful of cubes is usually telling you about the water or the room, not the compressor. How the harvest cycle works, what slows it, and what to check first.
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Sub-Zero Condenser Running Non-Stop in Los Angeles Heat
Written by Elena Sandoval
A built-in that never seems to switch off in August is usually rejecting heat badly, not failing. What long run times mean, the four faults behind them, and what to check before booking a visit.
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Tell us what it is doing
Model, roughly how old, and the symptom. That is enough to book the right visit and put the right parts on the van. The $89 service call covers the trip and the diagnosis, and comes off the repair.