Toshiba MMD-AP0481HFE Manuel Du Propriétaire page 13

Before you ask for servicing or repairs, check the following points.
Inoperative
• The main power switch is turned off.
• The circuit breaker is activated to cut off power supply.
• The main power fuse has blown out.
• Stoppage of electric current.
Does not cool well or heat well
• The air inlet and/or outlet of the outdoor unit is blocked.
• Doors or windows are opened.
• The set temperature is too high. (In cooling operation)
• The set temperature is too low. (In heating operation)
• Is the temperature of the fresh air out of COOL/HEAT use range?
FAN status is automatically made.
Indoor unit or outdoor unit makes a strange noise.
• When the temperature suddenly changes, the indoor or outdoor unit
occasionally makes a strange noise because of changing of refrigerant flow or
expansion work.
The room air is smelly or a bad odor comes from the air conditioner.
• Smells impregnated in the walls‚ carpets, furniture, clothing, or furs, come
out from the air conditioner.
Outdoor unit is frosted in heating operation.
Water drains from outdoor unit.
• The outdoor unit is sometimes frosted in heating operation.
In that case, the unit automatically performs defrosting
(for 2 to 10 minutes) for increasing the heating efficiency.
• In defrosting operation, both the indoor and outdoor units stop airflow.
• Hiss sound is heard when flow of the refrigerant is changed for defrosting.
• Resultant water of automatic defrosting in heating operation drains from
outdoor unit.
A white mist of chilled air or water is generated from the outdoor unit.
• The indoor unit in cooling operation or the outdoor unit in defrosting
operation occasionally causes steams.
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