Mitsubishi FDC 6 Series User Manual

3
(3) Outline of microcomputer control function
(a) Operation control function by the indoor controller
1) Automatic operation (Only heat pump type)
If the Auto mode is selected on the remote control device, the selection of cooling or heating can be made automatically
depending on the room temperature (and the temperature of indoor heat exchanger). (When the switching between the
cooling and the heating is made within 3 minutes, the compressor will not operate for 3 minutes.) This will make much
easier the switching of cooling/heating at the change of season and can be adapted to the unmanned operation at bank
cash dispenser.
Notes (1) During the automatic switching of cooling/heating the
room temperature is controlled based on the setting
of room temperature (DIFF:±}1 deg)
(2) If the temperature of indoor heat exchanger rises be-
yond 63˚C during the heating operation, it is switched
automatically to the cooling operation. For an hour
after this switching, the heating operation is suspended
regardless of the temperature as shown at left.
Temperature difference between thermostat set temp.
and return air temp. (Detected by ThI-A)
Note(1)
:ON
× :OFF
/ × :According to control other than temperature control.
Thermostat
ON
Cooling Fan Heating Dry
Control part
Compressor × × × ×
4-way valve × × × × × × ×
Outdoor fan × × × × ×
Indoor fan
/ ×
Louver motor / ×
Condensate motor × (2min. ON) × (2min. ON) × (2min. ON) × (2min. ON)
Thermostat
OFF
HOT START
Defrost
Thermostat
ON
Thermostat
OFF
Thermostat
ON
Thermostat
OFF
3) Control parts operation during cooling and heating
2) Room temperature control (Differential of thermostat)
Temperature difference between thermostat set
temp. and return air temp. (Detected by ThI-A)
Function
Heating operation
OFF (52C)
+1
-1
Set temp.by thermostat
Cooling operation
OFF (52C)
+1
-1
Set temp.by thermostat
ON (52C)
Heating operation
Cooling operation
Setting room temp.
Room temp. (detected at Th
1-A
) [deg]
Ready for
heating
Suspended heating operation
Indoor heat exchanger temperature (˚C)
–

Mitsubishi FDC 6 Series Specifications

General

Brand	Mitsubishi
Model	FDC 6 Series
Category	Air Conditioner
Language	English