Maintenance - Toshiba MMU-AP0074YH1-E Installation Manual

SMMS 1-Way Cassette YH Type
10

Maintenance

<Daily maintenance>
▼ Cleaning of air filter
If is displayed on the remote controller, maintain the
air filter.
1
Push the button to stop the
operation, then turn off the circuit breaker.
9
2
Loosen the screw of the air intake grille
fixing plate on the centre of the panel. Slide
the plate to the direction of [OPEN] arrow
shows.
3
Push [PUSH] at the center and left / right of
the air intake port to open the air intake port.
OPEN 
LOCK 
4
Take out the air filter by lifting up it once and
then pull it downward.
35-EN
Installation Manual
5
Cleaning with water or vacuum cleaner
• If dirt is heavy, clean the air filter by tepid water
with neutral detergent or water.
• After cleaning with water, dry the air filter
sufficiently in a shade place.
6
Insert the air filter surely into the specified
position.
7
Close air intake grille. Slide air intake fixing
plate to the direction of [LOCK] arrow shows
and fix it with a screw.
8
Turn on the circuit breaker, then push the
button on the remote controller to
1, 8
start the operation.
9
After cleaning, push .
display disappears.
CAUTION
• Do not start the air conditioner while air filter is
removed.
• Push the filter reset button. ( indication will be turn
off.)
SMMS 1-Way Cassette YH Type
▼ Periodic Maintenance
For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner
in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner.
When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended.
Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof
treatment, if necessary.
As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit
at least once every 3 months. Ask a professional for this cleaning / maintenance work.
Such maintenance can extend the life of the product though it involves the owner's expense.
Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and
even compressor failure.
▼ Inspection before maintenance
Following inspection must be carried out by a qualified installer or qualified service person.
Parts
Access from inspection opening and remove the access panel. Examine the heat exchanger if there
Heat exchanger
is any clogging or damages.
Fan motor Access from inspection opening and check if any abnormal noise can be heard.
Access from inspection opening and remove the access panel. Examine the fan if there are any
Fan
waggles, damages or adhesive dust.
Filter Go to installed location and check if there are any stains or breaks on the filter.
Access from inspection opening and remove the access panel. Check if there is any clogging or drain
Drain pan
water is polluted.
▼ Maintenance List
Part Unit
Heat exchanger Indoor / outdoor
Fan motor Indoor / outdoor
Filter Indoor
Fan Indoor
Air intake / discharge
Indoor / outdoor
grilles
Drain pan Indoor
Ornamental panel,
Indoor
louvres
Exterior Outdoor
– 18 –
Installation Manual
Inspection method
Check (visual / auditory) Maintenance
Wash the heat exchanger when it is
Dust / dirt clogging, scratches
clogged.
Take appropriate measures when
Sound
abnormal sound is generated.
• Wash the filter with water when it is
contaminated.
Dust / dirt, breakage
• Replace it when it is damaged.
• Vibration, balance • Replace the fan when vibration or
balance is terrible.
• Dust / dirt, appearance
• Brush or wash the fan when it is
contaminated.
Fix or replace them when they are
Dust / dirt, scratches
deformed or damaged.
Dust / dirt clogging, drain Clean the drain pan and check the
contamination downward slope for smooth drainage.
Wash them when they are contaminated
Dust / dirt, scratches
or apply repair coating.
• Rust, peeling of insulator
Apply repair coating.
• Peeling / lift of coat
EN
36-EN