Troubleshooting - Toshiba RAV-SM2244DTP-E Installation Manual

q 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 (Once a year)
Following inspection must be carried out by a qualified installer or qualified service person.
Parts
Fan motor Access from the access panel and check if any abnormal noise can be heard.
Access from the access panel and remove the access panel. Examine the fan if there are any
Fan
waggles, damages or adhesive dust.
Filter (sold separately) Access from check port and check if there are any stains or breaks on the filter.
Access from the access panel and remove the access panel. Check if there is any clogging or
Drain pan
drain water is polluted.
The unit can be accessed from the access panel shown
in the figure.
q 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
louvers
Exterior Outdoor
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Inspection method
Electrical control box
Access panel
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
Dust / dirt, breakage contaminated.
Replace it when it is damaged.
Replace the fan when vibration or
Vibration, balance 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
12

Troubleshooting

Confi rmation and check
When a problem occurred in the air conditioner, check
code and indoor UNIT No. appear on the display part
of the remote controller.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following "Confirmation of check code
log" for confirmation.
check code
Indoor UNIT No. in which
a problem occurred
– 24 –
Confirmation of check code
log
When a problem occurred on the air conditioner, the
check code log can be confirmed with the following
procedure.
(The check code log is stored in memory up to 4 check
code.)
The log can be confirmed from both operating status
and stop status.
2
3
1
1
When and buttons are pushed
simultaneously for 4 seconds or more, the
following display appears.
If is displayed, the mode enters in the check
code log mode.
[01: Order of check code log] is displayed in
CODE No.
[Check code] is displayed in CHECK.
[Indoor unit address in which a problem
occurred] is displayed in Unit No..
2
Every pushing of button used to set
temperature, the check code log stored in
memory is displayed in order.
The numbers in CODE No. indicate CODE No.
[01] (latest) → [04] (oldest).
REQUIREMENT
Do not push button because all the check code
log of the indoor unit will be deleted.
3
After confirmation, push button to return
to the usual display.
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