4 Electrical Components and Wiring Diagrams
4 Electrical Components and Wiring Diagrams
4-1 Outdoor Unit Circuit Board Arrangement
4-1-1 Outdoor Unit Control Box
(1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-A
1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water- proof and dust proof properties of the control box and may result in damage to its internal components.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter- minals to remove them.
3) Control box houses high temperature parts. Be well careful even after turning off the power source.
4) Perform the service after disconnecting the outdoor unit fan board connector (CNINV) and the inverter board con- nector (CN1). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between FT-P and FT-N on the INV board is 20 VDC or less.The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.
5) To connect wiring to TB7, check that the voltage is 20 VDC or below.
6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1) back to the inverter board after servicing.
7) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 V DC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
8) When the power is on, the compressor or heater is energized even while the compressor is stopped. Before turning on the power, disconnect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor. Check the compressor for a ground fault. If the insulation resistance is 1.0 MΩ or below, connect all power supply wires to the compressor and turn on the power to the outdoor unit. It is energized to evaporate the liquid refrigerant that has accumulated in the compressor.
<HIGH VOLTAGE WARNING>
Control box houses high-voltage parts.
When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage of the capacitor in the main circuit has dropped to 20 VDC or less.
FAN board Control board Electromagnetic relay
(DCL)
Rush current protection resistor (R1, R5) Note 2)
M-NET board
INV board Note 1)
Ground terminal Terminal block
for power supply (TB1)
Terminal block for transmission line (TB3, TB7) Capacitor
(C100)
Electromagnetic contactor (72C)
Noise filter
(2) PURY-EP500YLM-A
Capacitor Board INV board
Control board
M-NET board
Terminal block for transmission line (TB3, TB7)
Terminal block for power supply (TB1)
Noise filter Fan board
Ground terminal
DC Reactor
4 Electrical Components and Wiring Diagrams 1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water-
proof and dust proof properties of the control box and may result in damage to its internal components.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter- minals to remove them.
3) Control box houses high temperature parts. Be well careful even after turning off the power source.
4) Perform the service after disconnecting the outdoor unit fan board connector (CNINV) and the inverter board con- nector (CN1). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between SC-P and SC-N on the capacitor board is 20 VDC or less. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.
5) To connect wiring to TB7, check that the voltage is 20 VDC or below.
6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1) back to the inverter board after servicing.
7) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 V DC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
8) When the power is on, the compressor or heater is energized even while the compressor is stopped. Before turning on the power, disconnect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor. Check the compressor for a ground fault. If the insulation resistance is 1.0 MΩ or below, connect all power supply wires to the compressor and turn on the power to the outdoor unit. It is energized to evaporate the liquid refrigerant that has accumulated in the compressor.
4-1-2 Fan Box
(1) PURY-P450, P500YLM-A(1) PURY-EP400, EP450, EP500YLM-A
1. Handle the fan box with care. If the front or the bottom panel becomes damaged, water or dust may enter the fan box, dam- aging its internal parts.
2. Perform the service after disconnecting the fan board connector (CNINV) and the connect board connector (CN103).
Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage be- tween FT-P and FT-N on the INV board or between SC-P and SC-N on the capacitor board is 20 VDC or less. The ca- pacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions.
3. Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN103) back to the connect board after servicing.
FAN board
Connect board
Note 1)
4 Electrical Components and Wiring Diagrams
4-2 Outdoor Unit Circuit Board Components
4-2-1 Control Board
*For information about the display of SW4 function settings, refer to the following page(s). [5-1-1 Outdoor Unit Switch Func- tions and Factory Settings](page 127)
CN801
Pressure switch connection
Actuator drive
signal output LEV
drive signal output
SWU1,2 Address switch LED1Service LED
LED3Function setting display Lit :ON Unlit:OFF LED2Normal/Error indicator SWP1SW4 setting (SW6-10:OFF) Effective/Ineffective switching SW4~6 Dip switches
CN40Centralized control power supply ON CN51 12 VDC output
Compressor ON/OFF signal output
Error signal output CN41
Centralized control power supply OFF External signal input (contact input)
F01250 VAC 3.15A T CNRYB 72 drive signal output
Sensor input CN2/2A
Serial communication signal input GND
CN4 5 VDC output GND
Serial communication GND
16 VDC
GND(FAN INV board 1) 17 VDC
17 VDC GND(INV board) CN332
18 VDC output GND(FAN INV board 2)
CNVCC2 12 VDC output 5 VDC output GND CNAC2
L1 phase L2 phase
CNPS 12 VDC output GND 5 VDC output Power supply detection input Power supply ON/OFF signal output Centralized control
transmission signal input/output (30 VDC) Power input signal for the centralized control system (30 VDC) Indoor-outdoor
transmission line signal input/output (30 VDC) CNAC L1 phase
N phase CNDC Bus voltage input P
N
CN110 Power supply detection signal input GND
CN62
4-2-2 M-NET Board (Transmission Power Supply Board)
Power supply output for centralized control system Indoor/outdoor transmission line input/output CN102
CNS2Transmission line input/output for centralized control system
CNIT 12VDC input GND 5VDC input
Power supply detection output Power supply ON/OFF signal input
LED1Power supply for indoor transmission line
TP1,2 Check pins for indoor/outdoor transmission line TB7Terminal block for
transmission line for centralized control TB3Indoor/outdoor
transmission block
Ground terminal for transmission line Grounding
Grounding
CN04Bus voltage input P
N Grounding
4 Electrical Components and Wiring Diagrams
4-2-3 INV Board
(1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-A
1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter- minals to remove them.
3) Control box houses high temperature parts. Be well careful even after turning off the power source.
4) Perform the service after disconnecting the outdoor unit fan board connector (CNINV) and the inverter board con- nector (CN1). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between FT-P and FT-N on the INV board is 20 VDC or less. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.
5) To connect wiring to TB7, check that the voltage is 20 VDC or below.
6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1) back to the inverter board after servicing.
7) When the power is turned on, the compressor is energized even while it is not operating. Before turning on the power, discon- nect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor.
Check the compressor for a ground fault. If the insulation resistance is 1.0 MΩ or below, connect all power supply wires to the compressor and turn on the power to the outdoor unit. The liquid refrigerant in the compressor will evaporate by energizing the compressor.
(2) PURY-EP500YLM-A
1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter- minals to remove them.
3) Control box houses high temperature parts. Be well careful even after turning off the power source.
4) Perform the service after disconnecting the outdoor unit fan board connector (CNINV) and the inverter board con- nector (CN1). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between SC-P and SC-N on the capacitor board is 20 VDC or less. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.
5) To connect wiring to TB7, check that the voltage is 20 VDC or below.
6) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1) back to the inverter board after servicing.
7) When the power is on, the compressor or heater is energized even while the compressor is stopped. Before turning on the power, disconnect all power supply wires from the compressor terminal block, and measure the insulation resistance of the compressor. Check the compressor for a ground fault. If the insulation resistance is 1.0 MΩ or below, connect all power supply wires to the compressor and turn on the power to the outdoor unit. It is energized to evaporate the liquid refrigerant that has accumulated in the compressor.
CNCT4A Electric current sensor (DC) output (CT3)
CT-3Electric current sensor (DC bus current)
SC-L1 input(L1)
SC-L2 input(L2)
SC-L3 input(L3)
SC-BDC bus current input
IGBT(Rear)
CT-1Electric current sensor(U)
CT-2Electric current sensor(W)
F1Fuse 250 VAC 3.15A
CN10Gate power supply input +-
SW001
ON: No-load operation OFF: Normal operation OFF: Fixed CNTYP INV board Type CN5VGND
5 VDC output CNTHDCL thermistor input CNCT4B Electric current sensor (DC) input (CT-3)
CN43GND(Fan board) Serial communication signal input SC-NBus voltage output(N) FT001
Neutral point output(P) CNRYInrush current limiting
relay input SC-LDC bus current input
SC-PBus voltage output(P) R001Oversurrent
detection resistor FT-R21
Bus voltage output(P)
LED5Lit: Power is supplied to the relay drive Unlit: Power is not supplied to the relay drive
LED4Microcomputer in operation LED1Lit: Inverter operation Blinking: Inverter error CN1Bus voltage output
NP
CN2Serial communication signal output GND17 VDC input 17 VDC input GND
SC-UInverter output(U)
SC-VInverter output(V) SC-W Inverter output(W)
4 Electrical Components and Wiring Diagrams
4-2-4 Fan Board
1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
2) Control box houses high temperature parts. Be well careful even after turning off the power source.
3) Perform the service after disconnecting the outdoor unit fan board connector (CNINV) and the inverter board con- nector (CN1). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between FT-P and FT-N on the INV board or between SC-P and SC-N on the capacitor board is 20 VDC or less. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy con- ditions. Refer to the wiring nameplate for details.
4) To connect wiring to TB7, check that the voltage is 20 VDC or below.
5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN1) back to the inverter board after servicing.
LED1Lit: Inverter operation Blinking: Inverter error LED4Microcomputer in operation (Lit)
RSH02
4-2-5 Noise Filter
(1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-A
CN4Output
(Rectified L2-N current) P
N
CN5Output
(Rectified L2-N current) P
N
TB21Input/output(L1) TB22
Input/output(L2) TB23
Input/output(L3) TB24 Input(N) CN1BInput
L3 L2 CN1AInput
N L1 Grounding F1,F2,F3,F4 Fuse250VAC 6.3A
CN3Output L1 N Grounding CN2 Surge absorber circuit
Surge absorber circuit Short circuit Short circuit
4 Electrical Components and Wiring Diagrams (2) PURY-EP500YLM-A
CN1A Input
①N③L1
CN3 Output
①L1
③N
CN2①Surge absorber circuit
③Surge absorber circuit
⑤Short circuit
⑥Short circuit CN4
Output
①L2③N
⑤L3
F1 Fuse 250VAC 6.3A
F2 Fuse 250VAC 6.3A
F3
Fuse250VAC 6.3A
TB21 Input/output L1
TB22 Input/output L2
Grounding Grounding
Grounding
CN1B
①L3④L2
TB23 Input/output L3
TB24 Input/output N
CAUTION FOR HIGH VOLTAGE
CAUTION FOR HIGH VOLTAGE
4-2-6 Capacitor Board
(1) PURY-EP500YLM-A
1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
2) Control box houses high temperature parts. Be well careful even after turning off the power source.
3) Perform the service after disconnecting the fan board connector (CNINV) and the connector board connector (CN103). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between SC-P and SC-N on the capacitor board is 20 VDC or less. The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions. Refer to the wiring nameplate for details.
4) To connect wiring to TB7, check that the voltage is 20 VDC or below.
5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN103) back to the connector board after servicing.
CN106 Bus voltage input N
P
CN103 Output
(Rectified L3-N current) P
N
CN107 Output (L3-N rectifier) P N
CN104 Output (L3-N rectifier) P N
SC-NBus voltage input(N) SC-PBus voltage input(P)
note.1
note.1
C101〜C108 Smoothing capacitor R301〜R304
Rush current protection resistor CN102
Power supply detection signal output GND
CN101 Input(L2) Input(N) Input(L3)
4 Electrical Components and Wiring Diagrams
4-2-7 Connect Board
(1) PURY-P450, P500YLM-A(1)
PURY-EP400, EP450, EP500YLM-A
1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.
2) Control box houses high temperature parts. Be well careful even after turning off the power source.
3) Perform the service after disconnecting the fan board connector (CNINV) and the connector board connector (CN103). Before plugging in or unplugging connectors, check that the outdoor unit fan is not rotating and that the voltage between FT-P and FT-N on the INV board or between SC-P and SC-N on the capacitor board is 20 VDC or less.
The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy condi- tions. Refer to the wiring nameplate for details.
4) To connect wiring to TB7, check that the voltage is 20 VDC or below.
5) Reconnect the connector (CNINV) back to the fan board and reconnect the connector (CN103) back to the connector board after servicing.
1
4-3 Outdoor Unit Electrical Wiring Diagrams
(1) PURY-P200, P250, P300, P350, P400YLM-A(1) PURY-EP200, EP250, EP300, EP350YLM-A
Linear expansion valve (for the control of evaporating temperature)
RSH01/02,RSH1For current detection
C30~C37Capacitor (inverter main circuit) LChoke coil (for high frequency noise reduction) SV4a,b,dHeat exchanger capacity control
R1,5ResistorFor inrush current prevention Subcooled liquid refrigerant temperaturePipe temperatureOutdoor unit heat exchanger capacity control
SV5b
SV1a
21S4aSymbol<Symbol explanation> 63H1 63HS1 63LS 72C CT12,CT22,CT3 LEV5aDCL
Solenoid valve For opening/closing the bypass circuit under the O/S
4-way valve(Cooling/Heating switching)Explanation
Pressure sensor Pressure switch
High pressure protection for the outdoor unit Discharge pressure Low pressure
Magnetic relay(inverter main circuit) Current sensor(AC) DC reactor Z25THHSTH7TH6TH5TH4TH3TB7TB3TB1SV7,SV9 Thermistor
Discharge pipe temperature ACC inlet pipe temperature OA temperature IPM temperature Function setting connector
Power supply Indoor/Outdoor transmission cable Central control transmission cable
Terminal block For opening/closing the bypass circuit
*1.Single-dotted lines indicate wiring not supplied with the unit.
*2.Dot-dash lines indicate the control box boundaries. *3.Refer to the Data book for connecting input/output signal connectors. *4.Daisy-chain terminals (TB3) on the outdoor units in the same refrigerant system together
.
*5.Faston terminals have a locking function. Make sure the terminals are securely locked in place after insertion. Press the tab on the terminals to removed them. *6.Control box houses high-voltage parts. Before inspecting the inside of the control box,turn of
f the power,keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. SV10,SV11
For opening/closing the defrost circuit
TH9,TH11Heat exchanger outlet pipe temperature
*7.Difference of appliance. P200/250/300/350/400Model name *7 do not existappliance EP200/250/300/350*7 exist
F121 DC700V 4A TC151,C152 RSH01/02 12 L3N
red CNPS
1 321 TP1TP2
TB3
23 TB7 M1M2M1M2S
1 51234
12
12
132 346 36
1 531
2 2
CN82 blue
1
3 4
CN83 black
L1L2
31
Fan motor (Heat exchanger)
U V WCNINV
7 14 34
CN4 black
1
13
231 3
SW001
14 CN2 1 12
1 3 31432
23 1 1
CNSNR TH4
4 1
1 1
CN211green 23123321
U
5
2
54321 1 32 1 23
123
1 CN6
21 2
yellow CNPOW
1
654 X10 X12
ON X08
Unit address setting
CT12
CN5 red
D1R4 -Z5
1 +
3 1
6 white 12 34
3
green CN62 CN990 green
CN213 green
CNTYP4
F4 AC250V 6.3A
T
R5 CN201
Z25 TH5TH6
SWU2
LED1 SW610
Control Board TH3 CN40
63HS1 CN41
TH7 15
234 1 SW4
LED3
5
LEV5a 33 SET UP(SW6-10) SC-V CT22
SC-U V
CN4 blue
red
M OFF t black
CN506red
CNTYP2black
6
yellow CN3K
*3
Compressor ON/OFF output Error detection output
TB21
DC12VCN51
SV5b CN1A U
CN2
blue CN3N
1 3
+ 3
4 TB1CN1B
TB7 Power selecting connector
CNVDC 1
IPM 2 5
6 L3N
DCL black
72C white
red 26
ON OFF M-NET powersupply circuit
12 M-NET Board
Indoor/Outdoor transmission cable
INV BoardredTB23TB24
L2L1
+
ON
1's digit
THHS CN102
C31,C33, C35,C37
14
1
1 W
10's digit
OFFLED2:Normal operation(Lit) / Error(Blink) CNS2 yellow
CNDC red
red
MS 3~
2
2
C100 *5 LED1:Power supply to
Indoor/Outdoor transmission line
+ black
Central control transmission cable
*6 SC-L1
ONOFF FT-N
R30,R32, R34
Motor(Compressor)
red CN3S
1
CN04 red
CN43 yellow
1 SC-P2 P
CN61 green
CN202red
C30,C32, C34,C36
6 N
CN1
LED1:Normal operation(Lit) / Error(Blink)
*4
SC-W SC-L3
2 CNRYB
P63H1 4
1 SW510
5 CN3D
1
CPU power supply circuit
black CNAC2
1 *3
ONOFF 10
SWU1 white
CN212red SC-L2
62 CN80 CNTYP5green
LED4:CPU in operation
LED1:Normal operation(Lit) / Error(Blink)
CN801red 5 °IPM4
SC-P1 FT-P
blackred DB1 CT3
C1
CNTYP black
black TB22
SWP1 RSH1
R6 C11
FAN Board 63LS
ZNR1 U L
Noise Filter
2
CN507 black CN508 blue
3 3
3 6 6
4
CN3 green
SV9
Function setting
LED1 Display setting/ Function setting
72C Noise filter Noise filter
67 red
Surge absorber
12 1 1
CNLVA 1
F01 AC250V 3.15A
T
MS 3~
whiteblack
1
CNIT red
L1L2L3N
R31,R33, R35
3
4 1
R1,R5 X05 X13X06 X14
3 3
5 51 1
6 6CN505 CN509 yellow
13CNAC
CN81 green
12
534 4
4 CN2 SV1a SV4bSV4d SV4a21S4a
Power Source 3N~ 50/60Hz 380/400/415V
t° t° t° t° t° t°
t° TH11
CNTYP1black12TH9 5 X09
SV7*7
3 1CN504SV11
3 1CN503SV10 X03 yellowgreen X04 CN110black 12
Power failure detection circuit
UZNR400 1