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Troubleshooting - Toshiba RAV-SM404MUT-E Owner's Manual

Toshiba compact 4-way type split type air conditioners
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Compact 4-way Type


Check the points described below before requesting repair.
• White, misty, cold air or water comes out
Outdoor unit
• Sometimes the noise of air leaking is heard.
• A noise is heard when the power is turned
• Sometimes a swishing is heard.
• A clacking sound is heard.
Indoor unit
• Discharged air smells unusual.
• The fan continues running even after the
unit operation is stopped.
• The unit does not run
The room does not cool down or warm up.
If there is something unusual even after checking the above, stop running the unit, turn off the circuit breaker, and inform the
dealer where you purchased the product of the product number and symptom. Do not attempt to repair the unit by yourself as
doing so is dangerous. If the check indicator (
of its content as well.
If any of the following occur, stop running the unit immediately, turn off the circuit breaker, and contact the dealer where you
purchased the product.
• The switch does not work properly.
• The circuit breaker often blows out.
• You unintentionally put a foreign object or water inside.
• The unit cannot be run even after the cause of the protective device activation is removed.
• Other unusual conditions are found.
• The fan of the outdoor unit is automatically stopped and
defrosting is performed.
• The solenoid valve works when defrosting starts or stops.
• The outdoor unit is preparing for running.
• When the unit starts running, during operation, or
immediately after the unit stops running, a sound such as
water flowing may be heard, or the operation sound may
become louder for a couple of minutes immediately after
the unit starts running. This is the sound of the refrigerant
flowing or the dehumidifier draining.
• This is a sound generated when the heat exchanger, etc.
expands and contracts slightly due to temperature
• Various smells from the walls, carpet, clothes, cigarette,
cosmetics, etc. adhere to the air conditioner.
• The fan keeps running to self clean operation the heat
exchanger during drying.
• Has a blackout occurred?
• Has the circuit breaker blown?
• Has the protective device been activated? (The operation
indicator and
on the remote controller are blinking.)
• Is the air intake or discharge of the outdoor unit clogged?
• Is a door or window open?
• Is the air filter clogged with dust?
• Is the air volume set to "Low"? Or is the operation mode
set to "Fan"?
• Is the setup temperature appropriate?
, etc.) is displayed on the remote controller LCD, inform the dealer
Owner's Manual
Compact 4-way Type
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
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
Error code
– 12 –
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
Indoor UNIT No. in
which an error occurred
same time for 4 seconds or more, the
following display appears.
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.
Every pushing of
temperature, the error log stored in memory
is displayed in order.
The numbers in CODE No. indicate CODE
No. [01] (latest) → [04] (oldest).
Do not push
button because all the error log of the indoor
unit will be deleted.
After confirmation, push
to the usual display.
Owner's Manual
buttons are pushed at the
button used to set
button to return


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