13
FTC WIRING DIAGRAM <
PAC-IF07*B-E>
Symbol
Name
TB1
Terminal block <Power suppl
y, Outdoor unit>
ECB2
Earth leakage circuit breaker for immersion heater
(Except
PAC-IF071B-E)
MP1
W
ater circulation pump 1(Space heating & DHW)
MP2
W
ater circulation pump 2
(Space heating for Zone1)(Local supply)
MP3
W
ater circulation pump 3
(Space heating for Zone2)(Local supply)
MP4
W
ater circulation pump 4 (DHW)(Local supply)
3WV (2WV1)
3-way valve (2-way valve 1)(Local supply)
2WV2a
2-way valve (For Zone 1)(Local supply)
2WV2b
2-way valve (For Zone 2)(Local supply)
MXV
Mixing valve (Local supply)
IHT
heater(Except
PAC-IF071B-E)
IH
Immersion heater(Except
PAC-IF071B-E)
IHC
Contactor for immersion heater
(Except
PAC-IF071B-E)
TH1
Thermistor (Room temp.)(Option)
TH2
Thermistor (Ref. liquid temp.)
(Included in
PAC-IF071B-E)
THW1
Thermistor (Flow water temp.)
THW2
Thermistor (Return water temp.)
THW5A
Thermistor (DHW tank upper water temp.) (Included in
PAC-IF073B-E)
THW5B
Thermistor (DHW tank lower water temp.)
(Included in
PAC-IF073B-E)
(Option for
PAC-IF071/072B-E)
THW6
THW7
Thermistor (Zone1 return temp.)(Option)
THW8
THW9
Thermistor (Zone2 return temp.)(Option)
THW10
Thermistor (Mixing tank temp.)(Option)
THWB1
IN1
Room thermostat 1 (Local supply)
IN2
Flow switch 1 (Local supply)
IN3
Flow switch 2 (Local supply)
IN4
Demand control (Local supply)
IN5
Outdoor thermostat (Local supply)
IN6
Room thermostat 2 (Local supply)
IN7
Flow switch 3 (Local supply)
IN8
Electric energy meter 1 (Local supply)
IN9
Electric energy meter 2 (Local supply)
IN10
Heat meter (Local supply)
IN
11
Smart grid ready input (Local supply)
IN12
INA1
Flow sensor (Option)
FLOW
TEM
P. CONTROLLER (FTC)
TBO.1-5
Terminal block <Outputs>
TBI.1-6
Terminal block <Signal Inputs,
Thermistor>
F1
Fuse (IEC
T10AL250V)
F2
Fuse (IEC
T6.3AL250V)
SW1-6
DI
P switch *See
T
able 3
X1-16
Relay
LED1
Power supply (FTC)
LED2
Power supply (Main remote controller)
LED3
Communication (FTC-Outdoor unit)
LED4
Reading or writing data to SD card
CNPWM
Pump speed control signal for MP1
CN108
SD card connector
1.
Symbols used in wiring diagram are,
: connecto
r,
: terminal block. Function with asterisk (*) may not be available depending on model types.
2.
Indoor unit and outdoor unit connecting wires have polarities, make sure to match terminal numbers (S1, S2, S3) for correct wir
ings.
3.
Since the outdoor unit side electric wiring may change, be sure to check the outdoor unit electric wiring diagram for service.
4. When connecting a booster heate
r, the wiring method is di
fferent according to the type of built-in thermostat.
Please refer to the installation manual for details.
Table 4 Error Codes
Code
Error
L3
Circulation water temperature overheat protection
L4
DHW tank water temperature overheat protection
L5
Indoor unit temperature thermistor (THW1,
THW2,
THW5B,
THW6,
THW7,
THW8,
THW9) failure
L6
Circulation water freeze protection
L8
Heating operation error
L9
LA
Pressure sensor failure
LB
High pressure protection
LC
Boiler circulation water temperature overheat protection
LD
Boiler temperature thermistor (THWB1) failure
LE
Boiler operation error
LF
Flow sensor failure
LH
Boiler circulation water freeze protection
LJ
DHW operation error (type of external plate HEX)
LL
Setting errors of DI
P switches on FTC control board
LP
P1
Thermistor (Room temp.) (TH1) failure
P2
Thermistor (Ref. liquid temp.) (TH2) failure
P6
Anti-freeze protection of plate heat exchanger
J0
Communication failure between FTC and wireless receiver
J1 - J8
Communication failure between wireless receiver and
wireless remote controller
J9
Communication failure between FTC (Master) and FTC (Slave)
E0 - E5
Communication failure between main remote controller and FTC
E6 - EF
Communication failure between FTC and outdoor unit
E9
Outdoor unit receives no signal from indoor unit.
EE
Outdoor unit incorrect connection
U*, F*,A*
Outdoor unit failure
Table 1 Signal Inputs
Name
Terminal block
Connector
Item
OFF (Open)
ON (Short)
IN1
TBI.1 7-8
—
Room thermostat 1 input *1
Refer to SW2-1 in <
Table 3 DI
P Switch Functions>.
IN2
TBI.1 5-6
—
Flow switch 1 input
Refer to SW2-2 in <T
able 3 DI
P Switch Functions>.
IN3
TBI.1 3-4
—
Flow switch 2 input (Zone1)
Refer to SW3-2 in <T
able 3 DI
P Switch Functions>.
IN4
TBI.1 1-2
—
Demand control input
Normal
Heat source OFF/ Boiler operation *3
IN5
TBI.2 7-8
—
Outdoor thermo
-
stat input *2
Standard opera
-
tion
Heater operation/ Boiler operation *3
IN6
TBI.2 5-6
—
Room thermostat 2 input *1
Refer to SW3-1 in <T
able 3 DI
P Switch Functions>.
IN7
TBI.2 3-4
—
Flow switch 3 input (Zone2)
Refer to SW3-2 in <T
able 3 DI
P Switch Functions>.
IN8
TBI.3 7-8
—
Electric energy meter 1
Refer to installation manual.
IN9
TBI.3 5-6
—
Electric energy meter 2
IN10
TBI.2 1-2
—
Heat meter
IN
11
TBI.3 3-4
—
Smart grid ready input
IN12
TBI.3 1-2
—
INA1
TBI.4 1-3
CN1A
Flow sensor
*1. Set the ON/OFF cycle time of the room thermostat for 10 minutes or more;
otherwise the compressor may be damaged.
*2. If using outdoor thermostat for controlling operation of heaters, the lifetime of the
heaters and related parts may be reduced.
*3.
T
o turn on the boiler operation, use the main remote controller to select “Boiler” in “External input setting” screen in the service menu.
Table 2 Outputs
Name
Terminal block
Connector
Item
OFF
ON
OUT1
TBO.1 1-2
CNP1
W
ater circulation pump 1 output
(Space heating/cooling & DHW)
OFF
ON
OUT2
TBO.1 3-4
—
W
ater circulation pump 2 output
(Space heating/cooling for Zone1)
OFF
ON
OUT3
TBO.1 5-6
—
W
ater circulation pump 3 output
(Space heating/cooling for Zone2) *1
OFF
ON
2-way valve 2b output *2
OUT4
TBO.2 4-6
CNV1
3-way valve (2-way valve) output
Heating
DHW
OUT5
TBO.2 1-2
—
Mixing valve output *1
Stop
Close
TBO.2 2-3
Open
OUT6
TBO.5 5-6
—
Booster heater 1 output
OFF
ON
OUT7
TBO.5 7-8
—
Booster heater 2 output
OFF
ON
OUT8
TBO.4 7-8
—
Cooling signal output
OFF
ON
OUT9
TBO.4 5-6
CNIH
Immersion heater output
OFF
ON
OUT10
TBO.3 1-2
—
Boiler output
OFF
ON
OUT
11
TBO.3 5-6
—
Error output
Normal
Error
OUT12
TBO.3 7-8
—
Defrost output
Normal
Defrost
OUT13
TBO.4 3-4
—
2-way valve 2a output *2
OFF
ON
OUT14
—
CNP4
W
ater circulation pump 4 output
(DHW)
OFF
ON
OUT15
TBO.4 1-2
—
Comp. ON signal
OFF
ON
OUT16
TBO.3 3-4
—
Thermo ON signal
OFF
ON
OU
TA1
TBI.4 7-8
—
Analog output
0V
-10V
BC
TBO.5 3-4
—
Booster heater protection output
OFF(BH
T Open)
ON(BH
T Short)
BHT
TBO.5 1-2
CNBHT
Thermostat for booster heater
Thermos
tat
normal
: S
hor
t
High temp. open
Do not connect to the terminals that are indicated as “—” in the “T *1. For 2-zone temperature control. *2. For 2-zone valve ON/OFF control.
CN10
8
CN0
1
(BK
)
1
3
CN3
C
(B
U
)
1
3
CN
PW
M
(W
H
)
1
5
CNR
F
(W
H
)
W
ireless
recei
ve
r
(O
pt
ion
)
1
5
CN10
5
(RD
)
W
iF
i adap
te
r
(O
pt
ion
)
1
5
CN
IT
(B
U
)
1
2
CN2
0
(RD
)
1
3
CN2
1
(YE
)
1
4
CN
W
12
(RD
)
CN
W
5
(B
U
)
1
4
CN1
A
(W
H
)
TBI.
1
LE
D
1
LE
D2
LE
D
3
LE
D4
TA
B1
1
8
1
8
1
8 1
8
1
6
SW
1
SW
2
SW
3
SW
4
SW
5
F1
IEC
T10
AL250
V
F2
IEC
T6
.3A
L250
V
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
3
1
3
CN
BH
T
(BK
)
CN
IH
(OG
)
CN
V1
(W
H
)
CN
P4
(RD
)
CN
P1
(W
H
)
TBO.
1
TB
O.2
TBO.
3
TBO.
4
1
2
3
4
5
6
7
8
TB
O.5
1
3
5
1
3
CN
P4
(RD
)
F1
F2
CN0
1
(BK
)
TBO.
1
X1
X2
X3
X14
1
3
3
CN
PW
M
(W
H
)
CN
P1
(W
H
) 1
3
M 1~
2WV2b
M
P3
M
P
4
1
2
3
4
5
6
TBO.
2
1
3
5
C
N
V1
(WH)
3WV
1
2
3
4
5
6
7
8
TB
O.3
X4
X10
X16
X11
X12
TB
O.4
1
2
3
4
5
6
7
8
TB
O.5
X15
X13
X9
X8
Signal
ou
tpu
t
(B
oiler
)
Signal
ou
tpu
t
(thermo
on
)
Signal
ou
tpu
t
(E
rror
)
Signal
ou
tpu
t
(De
fros
t)
Signal
ou
tpu
t
(Comp
. on
)
CN
IH
(OG
)
2WV2a
1
3
X6
X7
N (3)
L (1)
4
2
BU
RD
3
1
5
A1
4
2
6
A2
IH
T
IH
B
A
BU
RD
1
3
2
CN
IH
(OG
)
OG
OG
Power
suppl
y
to
Immersion
hea
te
r
(Ex
cep
t PA
C-
IF
071
B-
E)
~/
N
230
V
50H
z
EC
B2
IH
C
1
5
3
1
5
3
1
3
1
3
FT
C
b
oa
rd
X5B
X5A
M
XV
C
lo
se N
O
pe
n
M
P2
M
P1
M 1~
M 1~
TBI.
2
TBI.
3
TBI.
4
TBI.
5
TBI.
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
1
4
t°
t°
t°
1
2
3
4
5
6
7
8
IN4
IN3
IN2
IN1
1
2
3
4
5
6
7
8
IN10
IN7
IN6
IN5
1
2
3
4
5
6
7
8
IN12
IN9
IN8
IN11
1
2
3
4
5
6
7
8
O
U
TA1
Flo
w
Sen
sor
1
2
3
4
5
6
7
8
t°
TH
W6
TH
W7
TH
W8
TH
W9
t°
t°
1
2
3
4
5
6
7
8
TH
W
B1
TH
W
10
Main
remote
controlle
r
FTC
(Sla
ve)
TB
I.1
TB
I.2
TB
I.3
TB
I.4
TBI.
5
TBI.
6
CN2
0
(RD
)
t°
CN2
1
(YE
)
1
3
1
2
CN
W
12
(RD
)
1
4
CN
W
5
(B
U
)
t°
TAB
1
THTH1
TH2 *
TH
W
5B
*
-
+
+
-
V
-
+
-
+
1
4
t°
t°
t°
TH
W
2
TH
W
1
1
5
SW
6
M 1~
M 1~
M 1~
M 1~
M 1~
N
L
S3
S2
S1
N
L
S3
S2
S1
To outdoor
unit
TB1
OG
OG
YE
YE
GNYE
To outdoor
unit
Power supply ~/N 230V 50Hz
TB1
OG
BU
RD
BU
RD
YE
GNYE
1
3
1
3
OG
BN
OG
BN
Indoor unit powered by independent source
Indoor unit powered
via outdoor unit
CIRCUIT
BREAKER
1 3 5
CN3C (BU)
CN3C (BU)
CN01 (BK)
OG
YE
1 3 5
CN01 (BK)
2WV
1
M 1~
4
5
6
TBO.2
1
2
3
4
5
6
7
8
Signal output for booster
heater protection
Signal output
(booster heater 1)
Signal output
(booster heater 2)
CN1
A
(W
H
)
1
4
<H
ow to use
TB
O
.1 to 5>
1
4
Pres
sre
Sensor
*
CN40
1
(W
H
)
1
4
CN40
1
(W
H
)
t°
TH
W
5A
*
1
BHT
CNBHT
(BK)
3
Tool
Tool
Conductor
Conductor
Outline view
Top view
Connect them using either way as shown belo
w.
*1.
External output (OUT
11) will be available. For safety reasons, this function is not available for certain errors. (In that case, system operation mu
st be stopped and only the
water circulation pump keeps running.)
*2.
This switch functions only when the FTC unit is connected with a PUHZ-FRP
outdoor unit. When another type of outdoor unit is connected, the heating mode function is
active regardless of the fact that this switch is ON or OF
F.
*3.
Space heating and DHW can be operated only in indoor unit, like an electric
heater
.
*4. If emergency mode is no longer required, return the switch to OFF position. *5.
Active only when SW3-6 is set to OF
F.
*6.
Active only when SW4-1 is set to ON.
Table 3 DI
P switch functions
DI
P switch
Function
OFF
ON
Default settings: Indoor unit model
SW1
SW1-1
Boiler
WITHOU
T
Boiler
WITH Boiler
OFF
SW1-2
Heat pump maxi
-
mum outlet water temperature
55ºC
60ºC
ON
SW1-3
DHW tank
WITHOU
T
DHW tank
WITH DHW tank
OFF :
PAC-IF071B-E
ON
: Except
:
PAC-IF071B-E
SW1-4
Immersion heater
WITHOU
T Im
-
mersion heater
WITH Immer
-
sion heater
OFF :
PAC-IF071B-E
ON
: Except
:
PAC-IF071B-E
SW1-5
Booster heater
WITHOU
T
Booster heater
WITH Booster heater
OFF
SW1-6
Booster heater function
For heating only
For heating and DHW
OFF
SW1-7
Outdoor unit type
Split type
Packaged type
OFF :
PAC-IF071B-E
ON
: Except
:
PAC-IF071B-E
SW1-8
Wireless remote controller
WITHOU
T
Wireless re
-
mote controller
WITH Wireless remote control
-
ler
OFF
SW2
SW2-1
Room thermostat 1
input (IN1) logic change
Zone1 opera
-
tion
s
top
a
t t
he
r-
mostat short
Zone1 opera
-
tion
s
top
a
t t
he
r-
mostat open
OFF
SW2-2
Flow switch 1 input (IN2) logic change
Failure detec
-
tion at short
Failure detec
-
tion at open
OFF
SW2-3
Booster heater capacity restriction
Inactive
Active
OFF
SW2-4
Cooling mode func
-
tion
Inactive
Active
OFF
SW2-5
Automatic switch to bac
kup
hea
t sour
ce
operation (When outdoor unit stops by error)
Inactive
Active *1
OFF
SW2-6
Mixing tank
WIT
H
O
U
T
Mi
x-
ing tank
WITH Mixing tank
OFF
SW2-7
2-zone
tempera
tur
e
control
Inactive
Active *5
OFF
SW2-8
Flow sensor
WITHOU
T
Flow sensor
WITH Flow sensor
OFF
DI
P switch
Function
OFF
ON
Default settings: Indoor unit model
SW3
SW3-1
Room thermostat 2 input (IN6) logic change
Zone2 opera
-
tion
st
op
a
t t
he
r-
mostat short
Zone2 opera
-
tion
st
op
a
t t
he
r-
mostat open
OFF
SW3-2
Flow
s
wi
tch
2
and
3
input logic change
Failure detec
-
tion at short
Failure detec
-
tion at open
OFF
SW3-3
—
—
—
OFF
SW3-4
Electric energy meter
WITHOU
T
Electric energy meter
WITH Electric energy meter
OFF
SW3-5
Heating mode function *2
Inactive
Active
ON
SW3-6
2-zone valve ON/ OFF control
Inactive
Active
OFF
SW3-7
Heat exchanger for DHW
Coil in tank
External plate HEX
OFF
SW3-8
Heat meter
WITHOU
T
Heat meter
WITH Heat meter
OFF
SW4
SW4-1
Multiple outdoor control
Inactive
Active
OFF
SW4-2
Position of multiple outdoor units control *6
Slave
Master
OFF
SW4-3
—
—
—
OFF
SW4-4
Indoor unit only operation (during installation work) *3
Inactive
Active
OFF
SW4-5
Emergency mode (Heater only opera
-
tion)
Normal
Emergency mode (Heater only operation)
OFF *4
SW4-6
Emergency mode (Boiler operation)
Normal
Emergency mode (Boiler operation)
OFF *4
SW5
SW5-1
—
—
—
OFF
SW5-2
Advan
ced auto adaptatio
nInactive
Active
ON
SW5-3
Capacity code
SW5-3
SW5-4
SW5-5
SW5-6
SW5-7
PAC-IF07*B-E
OFF
OFF
OFF
OFF
OFF
SW5-4 SW5-5 SW5-6 SW5-7 SW5-8
—
—
—
OFF
SW6
SW6-1
—
—
—
OFF :
PAC-IF071/072B-E
ON
: P
AC-IF073B-E
SW6-3
Pressure sensor
Inactive
Active
OFF
SW6-4
Analog output
Inactive
Active
OFF
WIRING DIAGRAM
