Air Conditioner Operations And Performance - Toshiba MMU-AP0071MH Owner's Manual

AIR CONDITIONER OPERATIONS AND PERFORMANCE

Check before operation
• Check whether earth wire is disconnected or out of place.
• Check that air filter is installed to the indoor unit.
Heating capacity (for Heat-pump model only)
• During heating operation the heat pump system operates by
absorbing the heat from the outside air and discharging it into the room.
Therefore if the outside temperature drops, the units heating capacity will decrease.
• When temperature of the outside air is low, it is recommended that you use other forms of heating in con-
junction with the air conditioner.
Defrost operation during heating operation (for Heat-pump model only)
• If the outdoor unit has a build up of frost during the heating operation, the operation mode changes automati-
cally to defrost mode to increase the heating effect (for approximately 2 to 10 minutes).
• During defrost operation, fans of the indoor and the outdoor units will stop.
Protection for 3 minutes
• The outdoor unit will not operate for approximately 3 minutes after the air conditioner has been immediately
restarted after being stop, or the power supply has been turned on. This is to protect the system.
Main power failure
• If a power failure occurs during operation, all operations stop.
• When restarting the unit, push the ON/OFF button again.
Fan rotation of stopped unit
• When other indoor units within the same system are in operation, the fan on the indoor units that are on
"stand-by" will rotate to protect the machine once approximately 1 hour for several minutes.
Protective device (High pressure switch)
The high pressure switch operates the unit automatically when excessive load is applied to the air conditioner.
If the protective device operates, the operation lamp will stay but the operation will stop.
When the protective device operates, check characters "
The protective device may operate in the following cases.
In Cooling operation
• When suction or discharge port of the outdoor unit is closed.
• When strong winds blow continuously against the discharge port of the outdoor unit.
In Heating operation (For Heat-pump model only)
• When excessive dirt or dust is adhered to the air filter of the indoor unit.
• When the discharge port of the indoor unit is blocked.
Cooling/heating operation of MiNi-SMMS air conditioner
In MiNi-SMMS air conditioner, each indoor unit can be individually controlled. However, cooling operation and
heating operation cannot be performed concurrently for the indoor units, which are connected to the same
outdoor unit.
When cooling operation and heating operation are performed concurrently, the indoor unit which is performing
cooling operation stops, and the "
continue operation.
If the manager has fixed the setting to COOL or HEAT, no other operation can be performed.
When another operation other than the set up one is performed, the "
of the indoor unit.
Characteristics of heating operation (For Heat-pump model only)
• Hot air will not be blown out immediately from the indoor unit. It will take between 3 to 5 minutes (depending
on temperature conditions of the room and the outside) before the indoor heat exchanger warms up suffi-
ciently, to allow hot air to be blown.
• During operation, the outdoor unit may stop if the outside temperature becomes to high.
• When other indoor units are in heating operation, the fan operation of the indoor unit on fan only operation
may be stopped temporarily to prevent hot air from being blown out.
" on the remote controller display.
" on the unit display will be lit. The indoor unit that is in heating mode will
22
WARNING
Turn on the power supply
12 hours or more before
starting the air conditioner.
" light is displayed on the display part