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SUB-ZERO TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Cabinet too warm
Unit switched off Check temperature control
Cabinet temperature
Temperature control setting Check temperature setting
changed
changed
Excessive operating time
Dirty condenser Clean condenser
Cabinet full of warm wine Unit must operate for up to 24
hours to cool warm wine
Door gasket not sealing tightly Check gasket fit
Thick frost on evaporator Shut unit off until frost melts,
(see below) (see below)
Unit in warm room conditions Sunlight or high room tempera-
tures will increase operating time
Excessive noise
Fan will make some noise May be normal
Unit will not cool
Fan blade contacting fan shroud Check for free fan blade rotation
Dirty condenser Clean condenser
Fan motor not turning blade Contact authorized service center
Low on refrigerant Contact authorized service center
Compressor not operating Contact authorized service center
Thick frost on evaporator
Door gasket not sealing tightly Check gasket fit
Door not closing Check door for obstructions
Thermostat not keeping unit off Contact authorized service center
long enough
Excessive operating time Check for cause (see above)
Cabinet light does not
Light bulb burned out Replace light bulb (see page 15)
work properly
Door switch does not close Check door switch
Cannot switch light on with Check rocker switch
door closed
Water running inside unit
Drain trough hose plugged Contact authorized service center
Water leaking under unit
Drain hose out of position Contact authorized service center
Drain pan over filling Check door or door gasket
SERVICE
CENTER
Contact your
Sub-Zero dealer or
check the Locator
section of our
website,
subzero.com, for
the authorized
service center
nearest you.