Cause:Compressor fault,refrigerant leak,dusty condenser

Self‑check:Check rear ventilation is not blocked,confirm door fully closed

Solution:Clean condenser;leak test & recharge refrigerant;replace faulty compressor

Cause:Aging temperature sensor,faulty circulation fan,leaky door seal

Self‑check:Check door gasket gap,check inner fan rotation

Solution:Replace temperature sensor;repair fan;renew door gasket

Cause:Power board blown,fuse burnt,loose wiring

Self‑check:Test wall socket,check power plug firmly seated

Solution:Replace fuse;repair power main‑board;reconnect loose cables

Cause:Display panel failure,loom loose,main‑board power supply anomaly

Self‑check:Power off 5 minutes then restart unit

Solution:Re‑seat ribbon cable;repair / replace touch display panel

Cause:Moisture‑damaged touch panel,damaged control module

Self‑check:Wipe moisture off panel,power‑cycle device

Solution:Inspect & clean ribbon cables;replace full touch panel assembly if needed

Cause:Door ajar,temperature over‑range,error‑code alarm trigger

Self‑check:Firmly close door,check screen for error code

Solution:Fix door‑closing;diagnose & replace parts per error‑code

Cause:Dual‑zone fan failure,baffle displacement,temperature sensor fault

Self‑check:Check wine bottles are not blocking air outlet baffles

Solution:Repair zone‑circulation fan;replace corresponding temperature sensor

Cause:Defrost‑system failure,leaky door seal,excessive ambient humidity

Self‑check:Power‑off to defrost,inspect door gasket cold‑air leakage

Solution:Repair defrost sensor;renew door seal gasket

Cause:Drain hole blocked,drain pipe dislodged,overflow condensate tray

Self‑check:Check condensate tray full‑water,clear drain hole debris

Solution:Unclog drain path;re‑install fallen‑off drain pipe

Cause:Aging compressor rubber mount,fan blade hitting casing,loose parts

Self‑check:Check unit level,ensure no rear‑wall collision

Solution:Replace anti‑vibration feet;repair or replace defective fan motor

Cause:Worn door hinge,deformed aging door gasket

Self‑check:Paper‑gap test:paper pulls out easily = cold‑air leakage

Solution:Adjust door hinge;install brand‑new door gasket

Cause:Ventilation blocked,high ambient temperature,long‑duration continuous run

Self‑check:Keep ≥10cm clearance around unit for heat dissipation

Solution:Clean condenser dust;improve surrounding ventilation

Cause:Burnt‑out LED strip,loose lamp wiring

Self‑check:Power‑off,gently jiggle lamp strip then restart test

Solution:Reconnect wiring;replace LED lighting strip

Cause:Compressor short‑circuit,damaged capacitor,moisture‑caused short‑circuit

Self‑check:Do NOT repeatedly restart to prevent further damage

Solution:Test compressor & start‑capacitor;replace defective components

Cause:Damaged temperature probe,main‑board signal anomaly

Self‑check:Power‑cycle unit,observe erratic reading persistence

Solution:Replace temperature sensor probe;repair main control board

Cause:Built‑in unit blocked ventilation,furniture covering air‑vents

Self‑check:Check top/rear/bottom vents are not covered

Solution:Release heat‑dissipation clearance;clean internal condenser module

Cause:Cold‑leaking door gasket,too‑low set‑temperature,failed sensor

Self‑check:Raise set‑temperature moderately,check door sealing status

Solution:Renew door gasket;replace defective temperature sensor

Cause:Faulty sensor / fan / main‑board corresponding to error‑code

Self‑check:Power‑off 5‑10 minutes then restart to test error reset

Solution:Troubleshoot parts per error‑code;replace damaged assembly

Cause:Humidity‑control module fault,frequent door‑opening,high ambient humidity

Self‑check:Reduce frequent door‑opening,inspect door sealing condition

Solution:Repair humidity‑control components;check defrost‑system performance

Cause:Burnt circulation‑fan motor,fan jammed by foreign debris

Self‑check:Listen for inner‑fan spinning noise

Solution:Clear foreign objects;repair or replace inner circulation‑fan motor