Troubleshooting - Toshiba RAV-HM401CTP-E Owner's Manual

◆ Check periodically
• If the unit is used for a long time, parts may deteriorate and cause malfunction or bad drainage of dehumidifi ed
water depending on the heat, humidity, or dust.
• In addition to the usual maintenance, it is recommended that you have the unit checked and maintained by the
dealer where you purchased it.
NOTE
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 effi cient 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.
Maintenance List
Part Unit Check (visual / auditory)
Heat exchanger Indoor / outdoor Dust / dirt clogging, scratches
Fan motor Indoor / outdoor Sound
Filter Indoor Dust / dirt, breakage
• Vibration, balance
Fan Indoor
• Dust / dirt, appearance
Air intake /
Indoor / outdoor Dust / dirt, scratches
discharge grilles
Dust / dirt clogging, drain
Drain pan Indoor
contamination
Ornamental panel,
Indoor Dust / dirt, scratches
louvers
• Rust, peeling of insulator
Exterior Outdoor
• Peeling / lift of coat
23-EN
Maintenance
Wash the heat exchanger when it is
clogged.
Take appropriate measures when
abnormal sound is generated.
• Wash the fi lter with water when it is
contaminated.
• Replace it when it is damaged.
• Replace the fan when vibration or
balance is terrible.
• Brush or wash the fan when it is
contaminated.
Fix or replace them when they are
deformed or damaged.
Clean the drain pan and check the
downward slope for smooth drainage.
Wash them when they are contaminated
or apply repair coating.
Apply repair coating.
– 12 –
7

Troubleshooting

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 (e0, f01, h01, etc. ) is displayed on the wired
remote controller LCD, inform the dealer of its content as well.
If the air conditioner fails, the timer off
indication will alternately display the
check code and the number of faulted
indoor unit.
■
Troubleshooting history and confi rmation
If the air conditioner fails, you can view the troubleshooting history by following the steps below.
(The troubleshooting history can record at most 4 records.)
The troubleshooting history can be viewed when the air conditioner is on or off.
• If you view the troubleshooting history in the timer off operation, the timer off will be cancelled.
Step Operating Instructions
Long press the timer off button for more than 10 seconds tillan indication icon
appears, indicating that you have entered the troubleshooting history mode.
If [ Maintenance overhaul] is displayed, it indicates that you have entered
1 the troubleshooting history mode.
• The temperature indication displays [01: Troubleshooting History Order].
• The timer off indication will alternately display [Check Code] and the faulted
[Indoor Unit Number].
Press the set button each time, then the recorded troubleshooting history will
be displayed in the order of [01] (newest) to [04] (oldest).
Requirements
2
In the troubleshooting history mode, do not press the menu button for more
than 10 seconds. Otherwise, all troubleshooting history of the indoor unit will
be deleted.
After completing the check, press the ON/OFF button to return to normal
mode.
3
• It will continue to run if in the running mode. Please press the On/ Off
button again if in the stop mode.
Check code The number of faulted indoor unit
24-EN