Repair guides
Pick a type, an appliance or a brand. Every guide lists the tools, the safety call-outs, the steps and the reading you should expect.
Diagnostic · 374
Symptom → most likely cause, step by step
Component tests · 69
How to test a specific part, with expected readings
Installation · 33
Install, replace and hook up appliances correctly
Fundamentals · 24
Core skills every appliance tech uses
Appliance
Brand-specific guides
9 guides · Wine & Beverage Coolers
Diagnostic · 8
Guide · Wine CoolerCondensation on the glass door or water on the floor
Door sweating is usually humid room air on cold glass, made worse by a leaking gasket, blocked vents or frequent openings. Water on the floor usually means the drip tray is out of place or the defrost drain is clogged.
Guide · Wine CoolerDisplay shows an error, HI/LO, or does not respond
Many alarms (HI/LO, door) clear once the door is closed and the cabinet recovers. Sensor codes point to a thermistor or its wiring. A dead display with power present is usually the display board.
Guide · Wine CoolerDoor seal problems and interior light not working
A worn or poorly seated gasket causes warm cabinets, moisture and long run times. A dead light is usually the bulb/LED, a loose connection or the light switch, which on many units is part of the display board.
Guide · Wine CoolerDual-zone wine cooler: one zone warm, the other fine
When one zone of a dual-zone cooler works, the compressor or main cooling is usually alive. Focus on what each zone has on its own: its sensor, its fan, its air path or damper, its door seal and its section of the control.
Guide · Wine CoolerNoisy wine cooler or beverage center
Most noise is the unit not being level or touching something, loose parts, or a fan blade hitting ice or debris. Thermoelectric units only have fans, so noise there is almost always a fan. Some fan cycling is normal.
Guide · Wine CoolerThermoelectric wine cooler not cooling (fans run, cabinet near room temperature)
Thermoelectric coolers move heat with a solid-state Peltier module and two heat-sink fans, so they can only pull the cabinet a limited amount below room air. Rule out a hot room, blocked airflow and dusty fins before condemning the module, its fans or the DC power supply.
Guide · Wine CoolerWine cooler not cooling (thermoelectric vs compressor)
First identify the type: thermoelectric units (quiet, no compressor) are limited by room temperature and depend on their fans and heat sinks; compressor units depend on a clean condenser and working fans. Many no-cool calls are ventilation, door seal or room temperature problems.
Guide · Wine CoolerWine cooler too cold or bottles freezing
Over-cooling comes from a cold room (especially with thermoelectric units, which have no heater), an iced evaporator, a blocked internal fan, or a failed sensor/control.
