Toshiba RAS-M10SMUV-E Owner's Manual page 24

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.
• No electrical 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 fan speed is set to low.
• The air conditioner is set in the DRY mode.
• The set temperature is too high. (In cooling operation)
• The set temperature is too low. (In heating operation)
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.
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 the outdoor unit.
• The outdoor unit is sometimes frosted in heating operation.
In such case, the unit automatically performs defrosting
(for 2 to 10 minutes) for increasing of the heating efficiency.
• In defrosting operation, both the indoor and outdoor units stop air flow.
• A 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.
Air flow changes though the FAN button is not set to the AUTO mode.
• When the temperature of the blown air drops in heating operation, the air
conditioner automatically changes or stops air flow from the indoor unit not
to prevent the person in the room feeling cold.
• Air flow from the indoor unit is occasionally changed in the cooling operation.
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 gives off steam.
The OPERATION indicator turns on and off.
• The indicator turns on and off (once per 1 second) when power is restored
after a power failure or when the power main switch is set to on.
If you use the remote controller for ON
does not flash.
Automatic operation of air flow louvers
• When the room temperature or outdoor temperature is high during the
heating operation, the vertical air flow louvers close once and then set
themselves automatically to the original position setting again.
Cool, Dry, or Heat operation cannot be performed.
• When the unit in other room operates previously in different mode,
Fan-only operation is performed because of first-push priority control.
(Cool operation and Dry operation can be concurrently performed.)
OFF operation, the indicator
21
Calm