Troubleshooting - Toshiba RAV-GM901UTP-E Manual Del Usuario

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
Heat exchanger
exchanger if there 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
Fan
there are any 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
Drain pan
clogging or drain water is polluted.
Maintenance List
Parts Unit
Heat exchanger Indoor / outdoor
Fan motor Indoor / outdoor
Filter Indoor
Fan Indoor
Air intake /
Indoor / outdoor
discharge grilles
Drain pan Indoor
Ornamental panel,
Indoor
louvres
Exterior Outdoor
137-EN
Possible installed ceiling height
Check (visual / auditory) Maintenance
Dust / dirt clogging, Wash the heat exchanger when it is
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.
• Vibration, balance • Replace the fan when vibration or
• Dust / dirt, appearance balance is terrible.
• Brush or wash the fan when it is
contaminated.
Fix or replace them when they are
Dust / dirt, scratches
deformed or damaged.
Clean the drain pan and check
Dust / dirt clogging, drain
the downward slope for smooth
contamination
drainage.
Wash them when they are
Dust / dirt, scratches
contaminated or apply repair coating.
• Rust, peeling of insulator
Apply repair coating.
• Peeling / lift of coat
– 69 –
11

Troubleshooting

 Confirmation and check
When an error occurred in the air conditioner, an error
code and indoor UNIT No. appear on the display part
of the remote controller.
The error code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following "Confirmation of error log"
for confirmation.
Error code Indoor UNIT No. in
which an error occurred
 Confirmation of error log
When an error occurred on the air conditioner, the error
log can be confirmed with the following procedure.
(The error log is stored in memory up to 4 errors.)
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 error log
mode.
[01: Order of error log] is displayed in CODE
•
No..
[Error code] is displayed in CHECK.
•
[Indoor unit address in which an error
•
occurred] is displayed in Unit No..
2
Every pushing of button used to set
temperature, the error 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 error log of the
indoor unit will be deleted.
3
After confirmation, push button to return
to the usual display.
138-EN