When The Following Symptoms Are Found - Toshiba MMU-AP0071MH Manual Del Propietário

WHEN THE FOLLOWING SYMPTOMS ARE FOUND

Check the points described below before contacting your local service repair center.
Symptom
Outdoor unit • White misty cold air or
• Sometimes, the noise
Indoor unit • "Swish" sound is
• A stopping indoor unit
• Slight "Pishi!" sound is
• Discharge air smells.
• "
• When power of the air
Operates or stops automatically.
Does not operate.
Air is not cooled or warmed sufficiently.
When the following symptoms are found, stop the operation immediately, turn off the power supply, and con-
tact the dealer from where you have purchased the air conditioner.
• Activation of the power supply causing the unit to operate in an unstable fashion
(power on, power off , power on, power off etc).
• The main power fuse often blows out, or circuit breaker is often activated.
• Foreign matters or water have entered the unit by mistake.
• When the unit fails to operate after the protective device (circuit breaker) has been removed.
Not recommended.
• Other unexplained symptoms or unit abnormalities, that cannot be explained.
water is blown out.
"Pushu !" is heard.
sometimes heard.
in the same operating
air conditioner system
emitted sound, white
vapor or cool air.
heard.
" indication is lit.
conditioner is turned
on, "Ticktock" sound is
heard.
It's strange.
• Fan of the outdoor unit stops automatically and performs defrost
operation.
• Solenoid valve works when defrost operation starts or finishes.
• When the unit is in operation,a sound such as the movement of
water from one area to another may be heard. This sound may
become larger after a period of 2 to 3 minutes once the unit has
begun operation. This is not a cause for concern, but is the move-
ment of the refrigerant or the draining sound of the dehumidifier.
• When the air conditioner system is operating, the stopping indoor
unit in the same system needs temporary flow of refrigerant to
prevent the stay of oil or refrigerant.
Therefore, refrigerant flow sound "shaa/cyu" may be heard, or white
vapor may come out when other indoor unit heating, or cool air
may come out when other indoor unit cooling.
• This sound is generated when the heat exchanger, etc. expands
and contracts slightly due to the change of temperature.
• Various odurs such as those from a carpet, clothes, cigarette, or
cosmetics will adhere to the air conditioner.
• When cooling operation cannot be performed because another
indoor unit performs heating operation.
• When the manager of the air conditioner has fixed the operation to
either COOL or HEAT, but a request or demand contrary to the
setup operation is requested.
• When the fan operation is stopped to prevent the discharge of hot
air.
• Sound is generated when the expansion valve operates when the
power supply has been turned on.
• Is the timer "ON" or "OFF"?
• Is there a power failure to the unit?
• Has the power supply been turned off?
• Has the power fuse or breaker blown?
• Has the protective device operated? (The operation lamp goes on.)
• Is the timer "ON"? (The operation lamp goes on.)
• Are COOL and HEAT selected simultaneously?
(" " indication is lit on the display column of the remote controller.)
• Is the suction port or discharge port of the outdoor unit obstructed?
• Are there any doors or windows open?
• Is the air filter clogged with dust?
• Is the discharge louver of the indoor unit set at appropriate position?
• Is the air selection set to "LOW" or "MED" and is the operation
mode set to "FAN"?
• Is the setup temp. the appropriate temperature?
• Are COOL and HEAT selected simultaneously?
(" " indication is lit on the display column of the remote controller.)
24
Cause