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8.1.
Internal wiring – Parts table
Refer to the wiring diagram sticker on the unit. The abbreviations
used are listed below:
A1P~A8P ............ Printed circuit board (main, sub 1, sub 2, noise
filter, inverter, fan, current sensor)
BS1~BS5 ............ Push button switch (mode, set, return, test, reset)
C1,C63,C66 ........ Capacitor
E1HC~E3HC....... Crankcase heater
F1U ..................... Fuse (DC 650 V, 8 A)
F1U ..................... Fuse (T, 3.15 A, 250 V)
F1U,F2U.............. Fuse (T, 3.15 A, 250 V)
F5U ..................... Field fuse (field supply)
F400U ................. Fuse (T, 6.3 A, 250 V)
H1P~H8P ............ Pilot lamp
H2P: Under preparation or in test operation when
blinking
H2P: Malfunction detection when light up
HAP..................... Pilot lamp (service monitor - green)
K1,K3 .................. Magnetic relay
K1R ..................... Magnetic relay (K2M, Y4S)
K2,K4 .................. Magnetic contactor (M1C)
K2R ..................... Magnetic relay (Y5S)
K3R ..................... Magnetic relay (Y1S)
K4R ..................... Magnetic relay (Y8S)
K5R ..................... Magnetic relay (Y2S)
K5R ..................... Magnetic relay (for option)
K6R ..................... Magnetic relay (Y7S)
K7R,K8R ............. Magnetic relay (E1HC, E2HC)
K11R ................... Magnetic relay (Y3S)
L1R ..................... Reactor
M1C,M2C ............ Motor (compressor)
M1F,M2F ............. Motor (fan)
PS ....................... Switching power supply
Q1DI.................... Earth leakage breaker (field supply)
Q1RP .................. Phase reversal detection circuit
R1T ..................... Thermistor (air, fin)
R2T~R15T .......... Thermistor (H/E gas 1, H/E de-icer 1, sub cool H/E
gas 1, sub cool H/E liquid, H/E liquid 1, suction 1,
liquid 1, suction 2, H/E gas 2, H/E de-icer 2, sub
cool H/E gas 2, liquid 2, H/E liquid 2)
R10 ..................... Resistor (current sensor)
R31T,R32T .......... Thermistor (discharge) (M1C,M2C)
R50,R59.............. Resistor
R90 ..................... Resistor (current sensor)
R95 ..................... Resistor (current limiting)
S1NPH ................ Pressure sensor (high)
S1NPL................. Pressure sensor (low)
S1PH~S3PH ....... Pressure switch (high)
SD1 ..................... Safety devices input
T1A ..................... Current sensor
V1R ..................... Diode bridge
V1R,V2R ............. Power module
X1A~X9A ............ Connector
X1M..................... Terminal strip (power supply)
X1M..................... Terminal strip (control)
Y1E~Y5E ............ Electronic expansion valve (main 1, sub cool 1,
main 2, charge, sub cool 2)
Y1S~Y7S ............ Solenoid valve (RMTG, 4 way valve–H/E gas 1,
RMTL, hot gas, EV bypass 1, RMTT, RMTO, 4 way
valve–H/E gas 2, EV bypass 2)
Installation manual
10
Z1C~Z10C........... Noise filter (ferrite core)
Z1F ...................... Noise filter (with surge absorber)
L1,L2,L3 .............. Live
N.......................... Neutral
............ Field wiring
............... Terminal strip
....................... Connector
...................... Terminal
....................... Protective earth (screw)
BLK...................... Black
BLU ..................... Blue
BRN..................... Brown
GRN .................... Green
GRY..................... Grey
ORG .................... Orange
PNK ..................... Pink
RED..................... Red
WHT .................... White
YLW..................... Yellow
NOTE
(1) This wiring diagram only applies to the outdoor unit.
(4) When using the option adaptor, refer to the
installation manual.
(5) Refer to the installation manual, for connection
wiring to indoor-outdoor transmission F1-F2, outdoor-
outdoor transmission F1-F2 and on how to use
BS1~BS5.
(6) Do not operate the unit by short-circuiting
protection device S1PH,S2PH.
8.2.
Optional parts connector
X7A...................... Operation output
X9A,X37A............ Power supply (adapter)
NOTE
Use copper conductors only.
For connection wiring to the central remote
controller, refer to the installation manual of the
central remote controller.
Use insulated wire for the power cord.
REYQ8~16P8Y1B
VRVIII System air conditioner
4PW39996-1B
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