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8 Trouble shooting
8.1 Common Issues
ADA Undercounters - Laboratory Refrigerators & Freezers
Guide
Symptom
Unit not operating.
Unit runs
continuously.
Noise problems.
Possible Cause of Problem
Make certain that the unit is connected to a grounded
outlet.
Make certain that the temperature control is ON in freezers
and thermostat knob is not at "0" position in Refrigerators.
Check that circuit breaker is not tripped or fuse is not
blown.
Make certain that there is no heavy frost accumulation. If
yes, please defrost the unit.
Look at condenser to see if there is layer of dust or lint.
Clean if required with a dry brush or vacuum.
A leak around the door gasket will allow cold air to escape.
This causes unit to work harder than necessary to maintain
cold temperatures.
Re-seat or replace the gasket if worn.
If you have temperature set too cold, this may cause unit to
run Continuously. Call service technician for factory
settings.
Is the ambient air over 32ºC, or the units located close to
heat sources? If possible, move to a different location.
This can be caused by contents of unit being set too close
and rattling against each other. Rearrange contents as
needed.
Hissing or gurgling noise is caused by refrigerating fluid
circulating and is normal.
Noise can result if unit is not level on floor. Check with
level.
Installation and Operation Manual
Trouble shooting Guide
11
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