14
P5414964-rev.1
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During Defrosting Operation
When the outdoor unit is performing the
automatic defrosting operation, the indoor fan is
stopped and the louver is xed horizontally.
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Cooling of Indoor Unit
When the heating operation is stopped, the
indoor fan operation is maintained at the slow
position for the maximum of 2 minutes to lower
temperature of the inside unit.
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Automatic Defrosting Cycle
When the heating operation is stopped by
pressing RUN/STOP switch, frosting on the
outdoor unit is checked and the defrosting
operation may be performed for the maximum of
10 minutes.
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Prevention of Overload Operation
When the outdoor temperature is high (approx.
21C
o
) during heating operation, heating
operation is stopped due to activation of
the outdoor thermistor until the temperature
becomes low.
NOTE
8. Simultaneous Operation
9. Maintenance
9.1 Daily Maintenance
9.1.1 Cleaning Air Filter
Clean the air lter when the lter sign is turned
ON.
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When the air inlet grille is opened (closed) or
the air lter is attached (removed), perform
the work according to this operation manual.
If not, it may cause falling or injury.
(1) Open the air inlet grille.
While pushing both ends of knobs at the air
inlet grille toward the arrow direction, open
the air inlet grille.
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Turn OFF the power source before the
maintenance work. If not, it may cause a re
or an electric shock.
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Perform the maintenance work with stable
footing. If not, it may cause falling or injury.
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Do not operate the system without the air lter
to protect the indoor unit heat exchanger against
being clogged.
The multiple indoor units can be controlled by one
remote control switch (Single: max. 16 units, Twin:
max. 8 sets, Triple: max. 5 sets, Quad: max. 4
sets).
Contact a distributor or a contractor for detail.
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If the system is stopped due to a power failure, it
will not automatically start again although power
is restored.
Repeat the start-up procedure from Step 1 to
start the system. In the event of a very brief
power failure (2 seconds maximum), the settings
are memorized.
Therefore, the system starts automatically after
approximately 3 minutes.
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This air conditioner is used hot air circulation
system for the heating operation.
If the air conditioning room is large or the room
temperature is excessively low, it takes time to
warm the whole room. “HOT-ST” will be turned
OFF after heating the room.
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“HOT-ST” may by displayed during or right
after the defrosting operation. It is activated to
prevent the cold draft. It is NOT abnormal.
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