Trouble Shooting - Mitsubishi Mr. Slim PKA-A-HA7 Operation Manual

6. Care and Cleaning
Filter information
Reset filter sign?
Cancel OK
F1 F2 F3 F4
Filter information
Filter sign reset
Main menu:
Fri
83ºF
Room
Cool Set temp. Auto
83
ºF
Mode Temp. Fan
If two or more indoor units are connected, fi lter cleaning timing for
each unit may be different, depending on the fi lter type.
The icon will appear when the fi lter on the main unit is due for
cleaning.
When the fi lter sign is reset, the cumulative operation time of all units
will be reset.
The icon is scheduled to appear after a certain duration of
operation, based on the premise that the indoor units are installed in
a space with ordinary air quality. Depending on the air quality, the fi lter
may require more frequent cleaning.
The cumulative time at which fi lter needs cleaning depends on the
model.
• This indication is not available for wireless remote controller.
► Cleaning the fi lters
• Clean the fi lters using a vacuum cleaner. If you do not have a vacuum
cleaner, tap the fi lters against a solid object to knock off dirt and dust.
• If the fi lters are especially dirty, wash them in lukewarm water. Take
care to rinse off any detergent thoroughly and allow the fi lters to dry
completely before putting them back into the unit.
Caution:
• Do not dry the fi lters in direct sunlight or by using a heat source,
such as an electric heater: this may warp them.
• Do not wash the fi lters in hot water (above 50°C, 122°F), as this
may warp them.
• Make sure that the air fi lters are always installed. Operating the
unit without air fi lters can cause malfunction

7. 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.
10
Select "OK" with the [F4] button.
A confirmation screen will appear.
Navigating through the screens
• To go back to the Main menu
....................... [MENU] button
• To return to the previous screen
....................... [RETURN] button
When the is displayed on the
Main display in the Full mode, the
system is centrally controlled and
the filter sign cannot be reset.
Caution:
• Before you start cleaning, stop operation and turn OFF the power
supply.
• Indoor units are equipped with fi lters to remove the dust of sucked-
in air. Clean the fi lters using the methods shown in the following
sketches.
► Filter removal
Caution:
• In removing the fi lter, 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 fi lter is removed, do not touch the metallic parts inside
the indoor unit, otherwise injury may result.
PKA-A·HA7
A
B
1 Using both hands, pull both the bottom corners of the intake grille
to open the grille, then lift the fi lter until it clicks at the stop position.
2 Hold the knobs on the fi lter and pull the fi lter up, then pull it out
downward.
(Located in two places, on the left and right.)
A Front grille
B Filter
• Wipe the outside of the unit with a clean, dry, soft cloth.
• Clean off any oil stains or fi nger marks using a neutral household de-
tergent (such as dishwashing liquid or laundry detergent).
Caution:
Never use gasoline, benzene, thinner, scouring powder or any type
of non-neutral detergent, as these substances may damage the
unit's case.
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.