Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 23

POWER SOURCE 1～220ｰ240V 50Hz／1～220V 60Hz
TB
F（30A） F（8A）
RD L1i
L1 1
WH
N Ni NOISE FILTER 2
E GN
PWB3
E1 GN
L1o No
YE／GN
CT
DM
+ -
P1 N1
INVERTER
CNI2
PWB2
（WH）
I P M
CNI4
（WH）
CNACT1
U V W P2 N2 P N2
（WH）
V W
+ -
U
MS
A／F MODULE P
3～
+
GN N2
L1 L2
CM
L
Power cable, indoor-outdoor connecting wires
MAX over current Power cable size
Model
2
（A）
（mm ）
100 25 5.5
125 29
8
140 30
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen
along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
TB
RD
1
WH TO INDOOR UNIT
2
3
[ ]
POWER WIRES
1 2
SIGNAL WIRE
3
F（4A）
SM1
M
6 4 3 2 1
CNW CNW2 CNEEV1
（BK） （OR） （WH）
BL CNI1
（WH）
CONTROL
BL CNI3
PWB1
（WH）
52X1 52X3
LED1
52X2
RD
CNA2
BL
（WH）
RD
CNA1 CNF CNR CNS CNH CNTH
BL
（WH）
（BK） （WH） （RD） （BR） （WH）
t° t° t°
DH CH 20S
Optional 63H1 THo-R1 THo-D THo-S
Power cable length indoor-outdoor Earth wire size
wire size x number
（m） （mm）
24
φ1.6mm x 3
31 φ1.6
30
Mark
BK
BL
BR
GN
GR
P
SM2 FMO1 FMO2 OR
M M M
RD
WH
YE
YE／GN
6 4 3 2 1 7 6 5 4 1 7 6 5 4 1
CNEEV2 CNFAN1 CNFAN2
（RD） （WH） （WH）
ON ON
OFF OFF
1 2 3 4 1 2 3 4
LED2 SW1
SW3 SW5
CNIP CNPS CNB
（Y） （WH） （RD）
t° t° t°
LPT
THo-A THo-P THo-R2
Local setting switch SW3（Set up at shipment OFF）
The defrosting operation interval becomes shorter
by turning ON this switch. This switch should be
SW3-1 Defrost control change
turned ON in the area where outside temperature
becomes below the freezing point.
When this switch is turned ON, the outdoor unit
fan will run for 30 seconds in every 10 minutes,
SW3-2 when outdoor temperature falls to 3℃ or lower and
Snow guard fan control
the compressor is not runnning when the unit is used
in a very snowy country, set this switch to ON.
Method of trial operation
1 Trial operation can be performed by using SW3-3,4.
2 Compressor will be in the operation when SW3-3 is ON.
SW3-3,4 Trial operation
3 Cooling trial operation will be performed when SW3-4 is OFF,
and heating trial operation when SW3-4 is ON.
4 Be sure to turn OFF SW3-3 after the trial operation
is finished.
Item Description
Color
CnA～Z Connector
Black
CH Crankcase heater
Blue
DH Drain pan heater
Brown
CM Compressor motor
Green
CT Current sensor
Gray
DM Diode module
Pink
F Fuse
Orange
FM01,02 Fan motor
Red
IPM Intelligent power module
White
L Reactor
Yellow
LED1 Indication lamp（GREEN）
Yellow／Green
LED2 Indication lamp（RED）
LPT Low pressure sensor
SM1 Expansion valve for cooling
SM2 Expansion valve for heating
SW1 Pump down switch
SW3,5 Local setting switch
TB Terminal block
THo-A Thermistor（Outdoor air temp.）
THo-D Thermistor（Discharge pipe temp.）
THo-P Thermistor（IPM）
THo-R1,2 Thermistor（Heat exchanger pipe temp. ）
THo-S Thermistor（Suction pipe temp.）
20S Solenoid valve for 4 way valve
52X1 Auxilliary relay（for CH）
52X2 Auxilliary relay（for DH）
52X3 Auxilliary relay（for 20S）
63H1 High pressure switch