Lennox 4 Series User Manual

24
Table 12: Abnormal Operating Conditions and Reasons
“Malfunction” Reason
Air conditioner doesn’t run • When starting the unit
immediately aer turning
the unit o
• The overload switch
protecting the unit results
in a 3 minute delay
• When turning on the power • Run for about 1 minute
without other actions
Mist is blown from the air
conditioner
• When cooling • The high humidity air in
room is cooled rapidly
Noise is heard from the air
conditioner
• Slight click sound heard
once begin running
• Sound of initialisation for
the electric expand valve
• Hissing sound heard
continuously when cooling
• The sound of gas
refrigerant flowing in the
unit
• Hissing sound heard when
staring or stopping
• The sound of gas
refrigerant flow stopping
• Slight hissing sound heard
when running or aer
running
• Sound of drainage system
• Creaking sound heard
when running or aer
running
• The sound caused by
expansion of the panel
and other parts from the
change in temperature
Dust is blown from the air
conditioner
• Started up aer an
extended period of
stagnation
• Dust which has been
collected in the indoor unit
is being blown out
Odour is smelt from the air
conditioner
• When running • Odours from the room
which have been collected
in the indoor unit are being
discharged
Indoor unit still runs • Aer being switched o • The indoor fan motor will
keep running for up to 70
seconds to use excess
cooling and heating and
prepare for next operation
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LENNOX MULTI SPLIT INVERTER
Outdoor Unit

Lennox 4 Series Specifications

General

Brand	Lennox
Model	4 Series
Category	Air Conditioner
Language	English