ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW57794-1 – 08.2010
Installation manual
24
19. W
IRING
DIAGRAM
A1P~A4P ......................Printed circuit board
BS1~BS4 ......................Push button switch
C1~C4 ..........................Capacitor
DS1...............................DIP switch
E1H...............................Bottom plate heater
E1HC ............................Crankcase heater
F1U~F9U ......................Fuse
HAP (A1P) ....................Service monitor (green)
HAP (A2P) ....................Service monitor (green) (for W1 models only)
H1P~H7P (A1P) ...........Service monitor (orange) (for W1 models
only)
H1P~H7P (A2P) ...........Service monitor (orange)
K1M, K2M.....................Magnetic contactor (for W1 models only)
K1R~K4R .....................Magnetic relay
K10R, K11R..................Magnetic relay (for V3 models only)
L1R~L4R ......................Reactor
M1C ..............................Motor (compressor)
M1F ..............................Motor (fan) (upper)
M2F ..............................Motor (fan) (lower)
PS.................................Switching power supply
Q1DI .............................Earth leakage circuit breaker (field supply)
R1~R4 ..........................Resistor
R1T...............................Thermistor (air)
R2T...............................Thermistor (discharge)
R3T...............................Thermistor (suction pipe)
R4T...............................Thermistor (heat exchanger)
R5T .............................. Thermistor (heat exchanger middle)
R6T .............................. Thermistor (liquid)
R7T .............................. Thermistor (fin) (for W1 models only)
R10T ............................ Thermistor (fin) (for V3 models only)
RC................................ Signal receiver circuit (for V3 models only)
S1NPH ......................... Pressure sensor
S1PH............................ Pressure switch (high)
TC ................................ Signal transmission circuit (for V3 models
only)
V1R .............................. Power module (for V3 models only)
V1R, V2R ..................... Power module (for W1 models only)
V2R, V3R ..................... Diode module (for V3 models only)
V3R .............................. Diode module (for W1 models only)
V1T .............................. Insulated gate bipolar transistor (for V3
models only)
X1M.............................. Terminal strip
X1Y ................................Connector (option, bottom plate heater ERHQ)
X6A .............................. Connector (option)
X77A ............................ Connector
Y1E .............................. Expansion valve (main)
Y3E .............................. Expansion valve (injection)(for ERLQ only)
Y1S .............................. Solenoid valve (4-way valve)
Y3S .............................. Solenoid valve (for W1 models only, ERHQ)
Y3S ................................Solenoid valve (hot gas pass)(for ERLQ only)
Z1C~Z9C ..................... Noise filter
Z1F~Z4F ...................... Noise filter
: Wire clamp
L
: Live
: Terminal strip
N
: Neutral
: Connector
: Relay connector
BLK
: Black
ORG
: Orange
: Field wiring
BLU
: Blue
RED
: Red
: Protective earth screw
BRN
: Brown
WHT
: White
: Noiseless earth
GRN
: Green
YLW
: Yellow
NOTE 1
This wiring diagram only applies to the outdoor unit
NOTE 4
Refer to the option manual for connecting wiring to X6A/X77A
NOTE 5
Refer to the wiring diagram sticker (on back of front panel) on how to use BS1~BS4 and DS1 switch
NOTE 6
Do not operate the unit by short-circuiting protection device S1PH
NOTE 8
Confirm the method of setting the selector switches (DS1) by service manual. Factory setting of all switches: 'OFF'
NOTE 9
Option: Option
Wiring depending on model: Wiring depending on model