Panasonic U-4ML4DPQ Manual De Instalación página 15

6 When the specified amount of refrigerant is charged, push the
button. Then operation stops.
BS3 RETURN
The operation automatically stops within 30 minutes.
If the refrigerant charge cannot be finished within 30 minutes,
repeat step 5.
If the operation stops immediately after restart, there is a
possibility that the system is overcharged.
The refrigerant cannot be charged more than this amount.
7 After the refrigerant charge hose is removed, make sure to close
valve A.
11. E
LECTRICAL WIRING WORK
All wiring must be performed by an authorized
electrician.
All field supplied components and all electric
construction should comply with the applicable local
and national codes.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)
11.1. Internal wiring – Parts table
A1P........................ Printed circuit board (main)
A2P........................ Printed circuit board (inverter)
A3P........................ Printed circuit board (noise filter)
A4P........................ Printed circuit board (C/H selector)
BS1~BS5 ............... Push button switch (mode, set, return, test,
reset)
C1~C4 ................... Capacitor
DS1........................ DIP switch
E1HC ..................... Crankcase heater
F1U, F4U ............... Fuse (T 6.3 A/250 V)
F6U........................ Fuse (T 5.0 A/250 V)
FINTH .................... Thermistor (fin)
H1P~H8P .............. Light emitting diode (service monitor orange)
Prepare, test: blinking
H2P........................ Malfunction detection: light up
HAP ....................... Light emitting diode (service monitor green)
HBP ....................... Inverter pilot lamp
K1M ....................... Magnetic contactor (M1C)
K1R........................ Magnetic relay (Y1S)
K2R........................ Magnetic relay (Y2S)
K3R........................ Magnetic relay (Y3S)
K4R........................ Magnetic relay (E1HC)
K5R........................ Magnetic relay
L1R ........................ Reactor
M1C ....................... Motor (compressor)
M1F ....................... Motor (fan) (upper)
M2F ....................... Motor (fan) (lower)
PS.......................... Switching power supply
Q1DI ...................... Field earth leakage breaker (300 mA)
R1 .......................... Resistor (current limiting)
R2 .......................... Resistor (current sensor)
U-4~6ML4DPQ
Urban Multi air conditioner
4PW29037-1
R1T ........................ Thermistor (air)
R2T ........................ Thermistor (discharge)
R3T ........................ Thermistor (suction 1)
R4T ........................ Thermistor (heat exchanger)
R5T ........................ Thermistor (suction 2)
R6T ........................ Thermistor (subcooling heat exchanger)
R7T ........................ Thermistor (liquid pipe)
S1NPH ................... Pressure sensor (high)
S1NPL.................... Pressure sensor (low)
S1PH...................... Pressure switch (high)
V1R ........................ Power module
V2R, V3R ............... Diode module
V1T ........................ IGBT (Insulated Gate Bipolar Transistor)
X1M........................ Terminal strip (power supply)
X1M........................ Terminal strip (C/H selector) (A4P)
X2M........................ Terminal strip (control)
Y1E ........................ Electronic expansion valve (main)
Y3E ........................ Electronic expansion valve (subcool)
Y1S ........................ Solenoid valve (4 way valve)
Y2S ........................ Solenoid valve (hot gas)
Y3S ........................ Solenoid valve (unload circuit)
Z1C~Z7C ............... Noise filter (ferrite core)
Z1F~Z4F ................ Noise filter
Cool/heat selector
S1S ........................ Selector switch (fan/cool – heat)
S2S ........................ Selector switch (cool – heat)
Connector of option adaptor
X37A ...................... Connector (option adaptor power supply)
11.2. Precautions on electrical wiring work
Before obtaining access to terminal devices, all supply circuits
must be interrupted.
Use only copper wires.
The wiring between the indoor unit and outdoor unit must be for
230 V.
Do not turn on the main switch until all the wiring is completed.
Make sure that the main switch has a contact separation of at
least 3 mm in all poles.
Never squeeze bundled cables into a unit.
Fix cables so that cables do not make contact with the pipes
(especially on high pressure side).
Secure the electrical wiring with clamping material as shown in
figure 9 so that it does not come in contact with the piping,
particularly on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.
When installing the earth leakage breaker make sure that it is
compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the earth
leakage breaker.
As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
Follow the "electrical wiring diagram" when carrying out any
electrical wiring.
Installation manual
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