Troubleshooting - Toshiba RAV-HM301U1TP-E Owner's Manual

7

Troubleshooting

Check the points described below before requesting repair.
Symptom
• White, misty, cold air or water comes out
• Sometimes the noise of air leaking is heard.
Outdoor unit
• A noise is heard when the power is turned
on.
• Sometimes a swishing is heard.
• A clacking sound is heard.
Indoor unit
• Discharged air smells unusual.
• Louvers close automatically during heating
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 (
controller LCD, inform the dealer 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.
Cause
• 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
change.
• Various smells from the walls, carpet, clothes,
cigarette, cosmetics, etc. adhere to the air
conditioner.
In the following cases, the louvers close automatically
to reduce the cold air falling from the indoor unit.
• When defrosting during heating operation.
• Immediately after starting heating operation less than
12 hours after turning on the circuit breaker when the
outside temperature is low.
• 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
– 7 –
■
Confi rmation and check
If a problem occurs with the
air conditioner, the OFF timer
indicator alternately shows
the check code and the indoor
Unit No. in which the problem
occurred.
■
Troubleshooting history and confi rmation
You can check the troubleshooting history with the following procedure if a problem occurs with the air conditioner.
(The troubleshooting history records up to 4 incidents.)
You can check it during operation or when operation is stopped.
• If you check the troubleshooting history during OFF timer operation, the OFF timer will be cancelled.
Procedure
Push the OFF timer button for over 10 seconds and
the indicators appear as an image indicating the
troubleshooting history mode has been entered.
If [ Service check] is displayed, the mode enters in the
troubleshooting history mode.
1
• [01: Order of troubleshooting history] appears in the
temperature indicator.
• The OFF timer indicator alternately shows the [check
code] and the [indoor Unit No.] in which the problem
occurred.
Each time the setting button is pushed, the recorded
troubleshooting history is displayed in sequence.
The troubleshooting history appears in order from [01]
(newest) to [04] (oldest).
2
CAUTION
In the troubleshooting history mode, DO NOT push the
Menu button for over 10 seconds, doing so deletes the
entire troubleshooting history of the indoor unit.
After you have fi nished checking, push the ON/OFF
button to return to the regular mode.
3 • If the air conditioner is operating, it remains operated
even after the ON/OFF button has been pushed.
To stop its operation, push the ON/OFF button again.
Check code The indoor Unit No. in which
the problem occurred.
Description of operation
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