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CHAPTER 5. SERVICE AFTER SALE:-
Some unexpected failures may arise during running. Please pay attention to the running status of your LF-300D
freezer. If any exceptional case arises, please check and solve it according to the following introductions. If the
problem is not solved well, please contact our service center for details.
Problem
Possible Cause
ULT freezer does not operate
Power outage has occurred.
The plug is not properly plugged-in.
Fuse is blown.
Voltage is too low or too high.
Compressor does not work
Power in control panel is off.
Temperature setting is wrong.
Temperature is higher than setting
Frost in inner wall is too thick.
The door is not closed properly or is opened too frequently.
Overfull materials are put into chamber.
Ambient temperature is too high.
Too great noise
Freezer is not leveled well.
Freezer leans upon the wall.
Below are normal operations:
There are some light clashes when the compressor starts up and stops.
During rainy and watery season some frost may accumulate on the surfaces of cabinets. Please clean it with
dry rag.
DO NOT open the door twice within 5 minutes. This may lead the hot air into the interior of freezer and the
door may be difficult to open because of a negative pressure due to a sharp decrease of temperature of this
part air.