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High-Wall Type
Owner’s Manual
–37–
Toshiba
13. TROUBLE SHOOTING
CAUTION
If any of the following conditions occur, turn off the circuit breaker and immediately contact the dealer:
• The operation lamps flash at short intervals (5 Hz) even though you have tried turning off the power
supply and turning on again after 2 or 3 minutes.
• Switch operation does not work properly.
• The main power fuse often blows out, or the circuit breaker is often activated.
• A foreign matter or water fall inside the air conditioner.
• When the air conditioner does not operate even after the cause of the protective device activation has
been removed. (The operation lamp and on the remote control are flashing.)
• Any other unusual conditions are observed.
Before you ask for servicing or repairs, check the following points.
▼ Recheck
Inoperative
• The circuit breaker is turned off.
• The circuit breaker is activated to cut off power supply.
• The main power fuse has blown out.
• The louvers are not directed correctly.
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 fan speed is set to low.
• The air conditioner is set in the DRY mode in cooling.
• The set temperature is too high (In cooling) or low (In heating).
▼ These are not malfunction.
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 expansion/ contraction of parts or change of refrigerant flow.
• Air leaking sound is heard occasionally.
It is generated by the solenoid valve when it is actuated.
• A clattering sound is heard when the power is turned on.
It is generated by the outdoor unit during preparation for operation.
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.
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 - 10 minutes) for increasing the heating
efficiency.
• In defrosting operation, both the indoor and outdoor units stop air flow.
• 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.
The fan does not stop when the operation is stopped.
The fan runs in the self cleaning mode to dry the heat exchanger.
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