Manual

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An independent temperature checks of temperature in the chamber and the displayed           
temperatureontheTemperatureControllershouldbecarriedout.
Allalarmsshouldbetested.
5TroubleShootingandAfterSalesService
Some unexpected failures may arise during running. Please pay attention to the running status             
of your ULT freezer. If any problems arise, please check and solve it according to the following                
trouble shooting list. If the problem is not solved by any of these, please contact our Service                
Departmentwiththeserialnumberoftheunit.
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BeforeaServiceVisit,pleasecleananddisinfectthefreezer.
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Problem
PossibleCause 
ULT freezer does not   
operate
Poweroutagehasoccurred.
Theplugisfaultyornotsecurelyplugged-in.
Fuseisblown.
Voltageistoolowortoohigh.
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Compressor does not  
work
Powerincontrolpanelisoff.
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Temperaturesettingiswrong.
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Temperature is higher  
thansetting
Frostininnerwallistoothick
Thedoorisnotclosedproperlyorisopenedtoofrequently.
Chamberisoverloadedwithproduct.
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Ambienttemperatureistoohigh.
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LoudNoises
Freezerisnotlevel.
Freezercomingintocontactwithwallorobject.
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Belowarewithinnormaloperationparameters:
Therearesomelightclashingnoiseswhenthecompressorstartsupandstops.
During rain and high humidity some frost may accumulate on the surfaces of cabinets. Please              
wipeawaywithdryrag.
DO NOT open the door twice within 5 minutes. This may cause the door to be difficult to open                  
duetonegativepressure,causedbyhotairletinbyopeningdoorcontracting.
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