Care And Cleaning; Trouble Shooting - Mitsubishi Electric SLZ-KA09 Operation Manual

5. Care and Cleaning

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Following indication shows that the filter needs cleaning.
• Wired remote controller: "FILTER"
• RF thermostat: "Clean Filter"
Ask authorized people to clean the filter.
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When resetting "FILTER" or "Clean Filter" display.
Resetting the indication, refer to the operation manual of each remote controller.
Note:
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When 2 or more different types of indoor unit are controlled, the cleaning
period differs with the type of filter. When the master unit cleaning period
arrives, "FILTER" is displayed. When the filter display goes off, the cumu-
lative time is reset. (Only for wired remote controller.)
●
"FILTER" or "Clean Filter" indicates the cleaning period when the air
conditioner was used under general indoor air conditions by criteria time.
Since the degree of dirtiness depends on the environmental conditions,
clean the filter accordingly.
●
The filter cleaning period cumulative time differs with the model.
► Cleaning the filters
• Clean the filters using a vacuum cleaner. If you do not have a vacuum cleaner,
tap the filters against a solid object to knock off dirt and dust.
• If the filters are especially dirty, wash them in lukewarm water. Take care to rinse
off any detergent thoroughly and allow the filters to dry completely before putting
them back into the unit.
Caution:
• Do not dry the filters in direct sunlight or by using a heat source, such as
an electric heater: this may warp them.
• Do not wash the filters in hot water (above 122°F), as this may warp them.
• Make sure that the air filters are always installed. Operating the unit with-
out air filters can cause malfunction.
• Before you start cleaning, stop operation and turn OFF the power supply.
• Indoor units are equipped with filters to remove the dust of sucked-in air.
Clean the filters using the methods shown in the following sketches.

6. Trouble Shooting

Having trouble?
Air conditioner does not heat or cool well.
When heating operation starts, warm air does not blow from the indoor
unit soon.
During heating mode, the air conditioner stops before the set room tem-
perature is reached.
When dry mode starts, the set temperature changes.
► Filter removal
Caution:
• In removing the filter, precautions must be taken to protect your eyes from
dust. Also, if you have to climb up on a stool to do the job, be careful not
to fall.
• When the filter is removed, do not touch the metallic parts inside the in-
door unit, otherwise injury may result.
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SLZ-KA·NA
Pull the knob on the intake grille in the direction indicated by the arrow and it
should open.
Open the intake grille.
Release the knob on the center edge of the intake grille and pull the filter for-
ward to remove the filter.
Knob Grille
Here is the solution. (Unit is operating normally.)
■
Clean the filter. (Airflow is reduced when the filter is dirty or clogged.)
■
Check the temperature adjustment and adjust the set temperature.
■
Make sure that there is plenty of space around the outdoor unit. Is the
indoor unit air intake or outlet blocked?
■
Has a door or window been left open?
■
Warm air does not blow until the indoor unit has sufficiently warmed
up.
■
When the outdoor temperature is low and the humidity is high, frost
may form on the outdoor unit. If this occurs, the outdoor unit performs
a defrosting operation. Normal operation should begin after approxi-
mately 10 minutes.
■
When dry mode starts, the set temperature automatically changes to
the optimum initial set temperature.
Intake grille Filter
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