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Normal Operating Sounds You May Hear
• The fan circulating air inside the interior of your unit to maintain the temperature you
have selected.
• Boiling water, gurgling sounds or slight vibrations that are the result of the refrigerant
circulating through the cooling coils.
• Sizzling or popping sounds resulting from frost melting during the defrost cycle and
dripping on the defrost heater.
• The sound of dripping water as ice melts from the evaporator and flows into the drip
pan during the defrost cycle.
• Cracking or popping sound caused by the expansion and/or contraction of the
cooling coils during the defrost cycle.
• Both the defrost timer and the thermostat control will click when they cycle on and off.
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