Mitsubishi Heavy Industries FDCW100VNX-A, Technical Manual

Page: 53 / 315

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Technical data
‘19 • HM-T-340
Position of compressor
Terminals
BK
Black
BL
Blue
BR
Brown
O
R
Orange
RD
Red
WH
White
YG
Y
ellow/Green
G
R
Gray
PK
Pink
Mark
Color
Color marks
CM
Compressor motor
FM0
1
Fan motor
CH
Crankcase hea
ter
DH
Drain pan heater
52X
1
Auxiliar
y relay (for CH)
52X
3
Auxiliar
y relay (for 20S)
52X
4
Auxiliar
y relay (for DH)
20
S
Solenoid valve for 4-way valve
SM
1
Expansion valve for cooling
SM
2
Expansion valve for hea
ting
63H
1
High pressure switch
Tho-
A
Thermistor (Outdoor air temperature)
Tho-
D
Thermistor
(Discharge pipe temperature)
Tho-R1,R2
Thermistor
(Heat exchanger temperature)
Tho-
S
Thermistor (Suction pipe temperature)
LPT
Low pressure sensor
TB
Terminal block
IPM
Intelligent po
wer module
F
Fuse
CNA
〜
Z
Connector
SW9
Pump down switch
SW3,5,7,
8
Local setting s
witch
LED1
Indication lamp (GREEN)
LED2
Indication lamp (RED)
L1,L2 C1
Reactor Capacitor
ITEM
DESCRIPTION
POWER SOURCE 230V 50Hz
Check joint in the unit
Cooling
Discharge pressure (high pressure)
Heating
Intake pressure (low pressure)
Gas service valve charge port
Intake pressure (low pressure)
Discharge pressure (high pressure)
Precaution
Be sure to read the instruction manual and installation
manual of outside unit and indoor
unit before you turn on power
.
1.
This is R410A air-conditioning system.
Use only R410A refrigerant.
2.
Before conduct a test run,
do not fail to make sure that service valves are closed.
3.
T
urn on power 6 hours prior to a test run to energize the crankcase heater
.
4.
Always give a 3-minute or longer inter
val before you start the unit again.
Whenever it is stopped
.
A failure to obse
rv
e these instructions
can result in
a
compressor breakdown.
5.
The 4-way valve (20S) is energized during heating opera
tion.
6.
Check discharge pressure and intake pressure,
using the check joint provided inside
the unit and the gas service valve charge port.
The check joint in the unit and the gas
pressure or intake
pressure and discharge
pressure respectivel
y,
which s
w
itch
depending on a cooling or heating opera
tion.
7.
This
outdoor
unit
may
start
in
the
standby
mode
(waiting
for
a
compressor
startup),
which
can
continue
up
to
30
minutes,
to
prevent
the
oil
level
in
the
compressor
from
lowering
on
the
first
operation
after
turning
on
the
circuit
breaker
. If that is the case,
do not suspect a unit f
ailure.
Notes the port 1 on the outdoor unit.
INV PCB2
DH
LED1
SW9
Unit check joint
Charge port in gas ser
vice valve
SW3
Local setting switch (Setup at the time of shipment OFF)
area where outside temperature
becomes below
in the freezing point should
turn ON the switch at the time of hea
ting operation.
SW3-1
Printed circuit board LED lamp display
Keeps flashing
2 times flash
1 time flash 5 times flash
Error Code in Error
Log
_ _
E5
E34 E35 E36 E37 E38 E39 E53 E40 E42 E45 E47 E51 E60 E48 E49 E54 E59
Indoor Unit
display
_ _
OU com.
error
OU phase error
High HX
Temp.
Permanent Hotgas
S.fault Tho-R S.fault Tho-A S.fault Tho-D S.fault Tho-S
HP alarm
Inverter error
Fan alarm
LP alarm
S.fault LPT
Inverter error
Contents of display
Normal Connection error indoor unit and outdoor unit Communication error between indoor unit ~ outdoor unit Open phase error High pressure error of cooling (Tho-R sensor detection) Discharge gas tempera
ture error (Tho-D sensor detection)
Defective outdoor unit hea
t exchanger thermistor
Defective outdoor tempera
ture thermistor
Defective discharge gas tempera
ture thermistor
Defective suction tempera
ture thermistor
63H1 operation Current cut Inverter communica
tion error
AF over current error inverter PCB error (FO defective) Compressor rotor position detection error Outdoor fan motor error Low pressure error (PSL thermistor detection) Defective lo
w pressure thermistor
Defective lo
w pressure thermistor PSL
Error starting of compressor
Defrost control change
The outdoor fan is operated
for 10 seconds ever
y 10 minutes by turning ON the
switch
during compressor stop a
t
outside temperature
3 degrees C or less.
When used in a hea
vy sno
wfall area,
please turn ON the s
witch.
SW3-2
Snow prevented fan control
Error code
W
(BL
)
V
(WH
)
U
(RD
)
OR GR
1
L
INDOOR
UNIT
X10
F
PK
BK
BK
(4A)
PE
N 2 3
2 3
YE
YG
YE
YE
YE
YE
Y
ello
w
OR OR
REACTOR
PCB7
HMA100-S
X100
HSB100
1 2
1 2 3
OR GR
CIRCUIT BREAKER EARTH LEAKAGE BREAKER
YG
YG
INDOOR
OUTDOOR
UNIT
UNIT
OUTDOOR
UNIT
service valve charge port offer measurements of discharge pressure and intake
PCB1
PCB3
It becomes easy to go into defrost operation by turning ON the switch. The
PSC011G534K
W
OR GR
1
N
INDOOR
UNIT
X2
PE
L 2 3
2 3
HMK100
YG
OUTDOOR
UNIT
Meaning of marks
FDCW 71VNX-A
Electrical circuit diagram
MHA100-S