Panasonic Cs W50bb4p Cu V50bbp8 Cu W50bbp8 Repair Manual

							 1 SERVICE INFORMATION 3
 2 FEATURES 
4
 3 SPECIFICATION (HEAT PUMP TYPE ) 
10
 4 SPECIFICATION (COOLING ONLY TYPE ) 
11
 5 TECHNICAL DRAWING 
12
 6 CIRCUITDIAGRAM 
14
 7 OPERATING INSTRUCTION 
26
 8 REFRIGERATION CYCLE 
28
 9 OPERATIO N RANGE 
29
 10  PIPE LENGTH 
30
© 2002 Matsushita Industrial Corporation. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-W50BB4P CU-V50BBP8
CS-W50BB4P CU-W50BBP8
 11  OPERATING CHARACTERISTIC 32
 12  FAN PERFORMANCE 
33
 13  SAFETYDEVICE 
34
 14  COMPONENT SPECIFICATION 
35
 15  CAPACITY AND POWERCONSUMPTION 
36
 16  DISCHARGE AND SUCTION PRESSURE 
38
 17  SOUNDDATA 
39
 18  TWIN AND TRIPLE 
41
 19  WIRING MISTAKE PREVENTION 
46
AIR CONDITIONER
CONTENTS
 Page  Page
ORDER NO. MAC0210058C2 
						

							 20  TEST OPERATIO N AND SELF DIAGNOSIS 47
 21  SETTING OF SAVEENERGY AND THERMISTOR SWITCH 
51
 22  GROUP CONTROL 
52
 23  TROUBLESHOOTING  
53
 24  EMERGENCY OPERATIO N 
58
 25  CONTROL 
59 26  WIRED REMOTE CONTROLINSTALLA TION MANUAL 
70
 27  WIRELESS REMOTE CONTROLINSTALLA TION MANUAL 
75
 28  INSTALLA TION (INDOOR UNIT) 
82
 29  INSTALLA TION (OUTDOOR UNIT) 
91
 30  REPLACEMENT PARTS 
103
2 
						

							1 SERVICE INFORMATION
Caution:
OPb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use
a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
OPb free solder will tend to splash when heated too high (about 1100° F/600°C).
Notice of Address setting for NEW Cassette / NEW Outdoor Unit.
The new Casse tte / new Outdoor models are possible to have address setting fortwin / triplecontrol or group control
automatically when main powersupply is switched on.
(Manual address setting is also possible by usingDSW1 switch on the indoor unit P.C. board.) However,this address setting is
onlypossible when proper wiring connection is made and indoor unit must be of original unit
.
1.1. Example of trouble during test operation
If the below phenomenon is found during test operation, wrong address setting is possible.
Theref ore, please inspect the address setting.
 1. LCD display of the wiredremote control is not illuminated although the main powersupply switch is ‘on’.
 2. LCD display had indicated as normal illumination when power supply switch is ‘on’, however outdoo r unit cannot be operated.
(But, it is necessary to take 3 to 5 minutes for outdoor unit to start from the timing of remote control OFF/ON button is ‘on’.)
(For normal operation, the outdoor unit will only start its operation after 3 to 5 minutes upon pressing the OFF/ON button.)
 3. P.C. board had memorized wrong setting information.
 a. If main power supply is switched on with the wrong connection.
 b. Whenchanging the connection or combination of units due to re-installation etc.
 
    • 
• •  • 
W hen changing the system from twin to triple (triple to twin).
 
    • 
• •  • 
W hen changing the system from group control to normal one to one system.
 
    • 
• •  • 
W hen making the replacement of units of master and slave etc.
1.2. Caution during test operation
Do not touch the remote control button and do not change any wirings for one minute when the main powersupply switch is ‘on’.
(Because the unit is having automatic address setting during the first one minute.)
1.3. Caution during automatic address setting
When the mainpower supply switch is ‘on’, the P.C. board willautomatically memorize the connecting system.
Consequently , when initial power supply is ‘on’, there mustn’t be any interchanging of units even of the same type andsame
capacity unit.
Theref ore, connection of the unit to another system is prohibited.
3 
						

							2.1. Variety of excellent features
 
    • 
• •  • 
Compact design
Compact design 290 mm height, 840 mm width and 840
mm depth.
 
    • 
• •  • 
Automatic restart function
When theelectric power resumes after a power failure, the
unit will automatically restarts the operation in the pre-
failure mode.
 
    • 
• •  • 
Auto fan mode (indoor unit)
Auto fan mode is added beside s HI, ME and LO.
It automatically adjusts the fan speed according to the
indoor temperature.
 
    • 
• •  • 
Dry mode function
Dry mode can make a comfortable indoor environment
during wet season.
 
    • 
• •  • 
Quiet operationThe sound level is 50dB (A) for 50BB model during High
Fan speed and suitable for offices , shops, homes etc, when
quiet operation is essential.
 
    • 
• •  • 
Auto SwingLouvre
The air flow angle can be changed automatically (or
manua lly) to an angle between 10° to 70° using theremote
control.
 
    • 
• •  • 
Low ambient cooling operation
Coolin g operation is possible at outdoor temperature of
-5°C.
 
    • 
• •  • 
Automatic changeover function (heat pump models)
The unit automatically switches between cooling and
heating in accordance with operating load in order to
maintain a comfortable indoor temperature.
 
    • 
• •  • 
Hot start system (heat pump models)
 
    • 
• •  • 
Pipes and drainage
Built-in upward draining mechanism.
2 FEATURES
2.2. Low-noise outdoor units
4 
						

							2.2.1. Product features
 
    • 
• •  • 
Low-noise design improves comfort in surrounding
areas
 1. The noise-suppressing winglet fan is a result of new
research into vane design theory. The unique curved
shape suppresses the generation of vortexes, thus
reducing air flow noise.
 2. The adoption of double -orifice rings reduces air
passage resistance.
 3. Strengthening of the noise insulation materials in the
compressor and the sealing-in of mechanical noise
allows vibration noise to be greatly enclosed and
suppressed.
 4. The heat exchan ger has an L-shaped design to allow air
to flow more smoothly.
 5. Noise is automatically reduced further during night-time
operation with lower outdoor air temperatures.
2.3. Greatly improved workability
increases system renewal
capability
 
    • 
• •  • 
Pipes that are one size larger can also be connected for
renewal.
 
    − 
− −  − 
If renewing the system, existing refrigerant pipes can be
utilized so that only the indoor and outdoo r units need to
be replaced.
 
    − 
− −  − 
For example, liquid and gas pipesfrom 10years ago
can be connected to current pipes with the same size or
one size larger. Effective utilization of materials reduces
working time and trouble. (Adaptor sockets are not
supplie d.)
 
    • 
• •  • 
Additional refrigerant charging unnecessary for 30 m
 
    − 
− −  − 
All models do not require any additio nal charging of
refrigerant for 30 m of pipe length. This makes
installa tion much easier.
 
    • 
• •  • 
Drain water dripping-prevention structure
 
    − 
− −  − 
The base of the outdoo r unit is provided with a single
drain hole in order to prevent drain water from leaking
out of the unit. By connecting a drain elbow and a
discharge pipe, water leakages can be prevented even
when the unit is installe d to a wall.
 
    • 
• •  • 
Save space design allows units to be installed side-by-
side continuously
 
    − 
− −  − 
Servicing after installa tion can be carried out by
removing the front covers.
 
    • 
• •  • 
Long pipe design for refrigerant pipes
 
    − 
− −  − 
Maximum piping length of 50m for all models.
 
    • 
• •  • 
Internal pipe connection
 
    − 
− −  − 
Pipes are connected inside the units (inside the side
covers), making the final appearance more attractive.
 
    − 
− −  − 
Pipes can be diverted outward in any of four directions
(forward, right, down, rear).
 
    − 
− −  − 
Small liquid pipe diameters of 9.52mm for 50BB models,
making installa tion work much easier.
 
    • 
• •  • 
Centralized draining method
 
    − 
− −  − 
Even when multiple outdoo r units are installe d to a wall,
the drain outlets can be concentrated into a single drain
pipe. This makes installa tion easier and also improves
appearance.
5 
						

							2.4. A brand-new control method
using the latest in technology
 
    • 
• •  • 
Easier power supply wiring connection
Power supply wiring and other wiring tasks can be carried
out more easily.
 
    − 
− −  − 
Twin non-polar wires used to connect indoor and
outdoor units.
 
    − 
− −  − 
Adoption of connection error prevention circuits for drive
wires and signal wires. If a connection error is made, the
relay does not operate and current does not flow to the
circuit boards.
 
    • 
• •  • 
Twin and Triple operation
 
    − 
− −  − 
Simultaneous air conditioning of wide spaces and
corners is possible. Indoor units of different
horsepowers can even be used in combination.
 
    − 
− −  − 
Master unit and slave-units can be set automatically in
twin and triple systems. No address setting is
necessary.
 
    − 
− −  − 
Multiple indoor units can be operated simultaneousl y
with a single remote control. Note that individual
operation is not possible.
 
    • 
• •  • 
Separate indoor/outdoor unit power supplies
The power supply can be connected to (1) just the outdoo r
units, or (2) to both the indoor and outdoor units.
 
    • 
• •  • 
Easy test operation
Test operation can be carried out for both indoor and
outdoor units.
 
    • 
• •  • 
Automatic setting initialization function
(Remote control
and Indoor unit)
In accordance with the indoor and outdoor units connected
and the connection methods, conditions such as the
connection configuration (twin or triple format) and remote
control functions such as automatic louvre operation and
cooling or heating mode are automatically detected and set
instantly.
2.5. Wired Remote Control
 
    • 
• •  • 
The new design include s an easily- visible red pilot lamp.
The power can be turned on and off at a single touch,
without openin g the cover.
 
    • 
• •  • 
Has a built-in thermistor, allowing indoor temperature
detection in accordance with indoor conditions by switching
with main unit thermistor.
 
    • 
• •  • 
Twin non-polar wires make installa tion work easy. (10 m
cable supplie d as accessory.)
2.6. Wireless Remote Control
 
    • 
• •  • 
New design with compact size. (Operation range within
approximately 8 m.)
 
    • 
• •  • 
Built-in timer with ON/OFF timer setting (within 24 hours)
WiredWireless
Heat PumpCZ-RD51PCZ-RL51P
CoolingCZ-RD51PCZ-RL01P
NOTE: Both of the above remote control is packed separately
from the indoor unit.
6 
						

							2.8. New refrigerant Series [R407C]
pipe installation
2.8.1. Procedure
 
    • 
• •  • 
The new refrigerant (R407C) has a different composition to
the previously-used refrigerant (R22), so some contents
and method of pipe installa tion and charging work are
different from before. Care should be taken whencarrying
out this work.
2.8.2. Installation and precautions
2.8.2.1. Before installation
 1. Determine the installa tion division.
 2. Check the refrigerant to be used.
 
    • 
• •  • 
Check that the refrigerant is R407C .
 
    • 
• •  • 
Check that the gauge pressure is at a maximum of 3.3
MPa.
 3. Make a drawing of the Installation.
2.8.2.2. Installation
 1. Install the sleeve and the insert.
 2. Install the indoor unit.
 3. Install the refrigerant piping.
 
    • 
• •  • 
Pipe materials (Phosphours Deoxid ization Seamless
Pipe)
 
    • 
• •  • 
Refrigerant pipes which were previously used to carry
R22 must not be re-used. If replacing the indoor andoutdoo r units, be sure to replace all refrigerant pipes
also.
 
    • 
• •  • 
Check the pipe thickness.
(1/4, 3/8, 1/2 : t = 0.8mm 5/8, 3/4 : t = 1.0mm)
 
    • 
• •  • 
Clean the inside of the pipes.
 
    • 
• •  • 
W hen storing pipes, seal both ends of the pipes and
store them indoors to prevent water, dust and other
foreign particles from getting inside.
 
    • 
• •  • 
Take care not to let any foreign particles (oxide scales,
water or dirt) get inside the refrigerant lines (same as for
R22).
Q
Refrigerant pipe storing
LocationInstallation periodStoring method
Outdoors1 month or morePinching
Less than 1 monthPinching or taping
IndoorsAny
 
    • 
• •  • 
Pinching method
Close off the ends of the pipes with pliers or similar tool
and seal the openin g by brazing.
 
    • 
• •  • 
Taping method
Wind PVCtape around the ends of the pipes to seal the
openin gs.
2.7. Group Control Equipment
7 
						

							 
    • 
• •  • 
Do not work for refrigerant piping on outdoo r on rainy
days.
 
    • 
• •  • 
Seal by brazing.
 
    • 
• •  • 
Be sure to use only a non-oxidizing brazing material.
(Use nitrogen. Anti-oxidants cannot be used.)
 
    • 
• •  • 
W hen brazing pipes together, or when brazing copper
pipes and copper joints, use a brazing material (Bcup-3)
which does not require flux.
 
    • 
• •  • 
Flare processing and ester oil.
 
    • 
• •  • 
Sealing can be improved by applyin g ester oil or mineral
oil (the minimum amoun t necessary) to flares and flange
connections.
 
    • 
• •  • 
Due to the high hygroscopic tenden cy for ester oil, do
not mix or use any other impurities. (This can cause
deterioration of the compressor oil and problems with
the compressor.)
 
    • 
• •  • 
After preparing the refrigerant pipes, close both ends of
the pipes by brazing if not immediately connectingthem.
 
    • 
• •  • 
A torque wrench must be used.
 4. Install the drain pipe.
 5. Install the ducts.
 6. Insulate against heat.
 7. Carry out the electrical work.
 
    • 
• •  • 
Connecting cables and power cables.
 8. Make all necessary settings.
 9. Prepare the outdoor unit foundation.
 10. Install the outdoor unit.
 11. Air-tightness test.
For the final check, there should be no pressure drop when
3.3 MPa is applied for 24 hours.
 12. Vacuum drying.
Vacuum draw time60 min. or more
* Vacuum pump capacity 60 l/min. or higher
 
    • 
• •  • 
Drawing the vacuum will remove any moisture. 
    • 
• •  • 
The pressure after vacuum drawing should be 755
mmHg or less.
 
    • 
• •  • 
Use a special vacuum pump (with backflow-prevention
mechanism).
 
    • 
• •  • 
Gas must never be used for air purging.
 13. Additio nal refrigerant charging.
 
    • 
• •  • 
Check that refrigerant volume is correct.
 
    • 
• •  • 
Be sure to charge refrigerant in liquid state.
 
    • 
• •  • 
Always charge in liquid state.
When therefrigerant is charged from thecylinde r, the
composition may change greatly (compounds which do
not easily evaporate may remain inside the cylinde r), so
the refrigerant must always be charged in a liquid state.
(It is recommended that a manifo ld with sight glass be
used.)
Q
Boiling point at normal atmospheric pressure
(reference)
RefrigerantHFC32HFC125HFC134a
Boiling point-52°C-49°C-26°C
 
    • 
• •  • 
Use a special gauge manifo ld and charging hose.
 
    • 
• •  • 
If refrigerant leaks occur, replace all of the refrigerant
(same as for R22).
 
    • 
• •  • 
Note that a R22 leak detector cannot be use to detect
leaks.
 
    • 
• •  • 
Refer to the Installation Instructions include d for the
correct charging amoun t.
 
    • 
• •  • 
Make a note of additio nal refrigerant charging amoun ts
in the record table.
 14. Test operation and adjustment.
 15. Organize documentatio n before handover.
 16. Hando ver and explan ation of operation.
 
    • 
• •  • 
Ventilation of closed rooms
R407C is a non-fla mmable refrigerant with low toxicity ,
but in the gas state its specific gravity is heavier than
that of air, and so if leaks occur in a closed room,
suffoca tion may occur. Toxic gases may also be
generated if it comes into direct contact with flames, so
adequate ventilation must be provided.
8 
						

							9 
						

							3 SPECIFICATION (HEAT PUMP TYPE )
CS-W50B B4P / CU-W50B BP8
ITEM / MODELIndoor UnitOutdoor unit
Main BodyCS-W50BB4PCU-W50BBP8
PanelCZ-BT01P
RemoteCZ-RD51P (Wired)
ControlCZ-RL51P (Wireless)
Cooling CapacitykW14.0
BTU/h47,700
Heating CapacitykW16.0
BTU/h54,600
Refrigerant Charge-lessm30
Standard Air Volume for High Speedm3/min31
cfm1095
Outside Dimension (H x W x D)mm290 x 840 x 8401220 x 1100 x 320
inch11-7/16 x 33-1/24 x 33-1/2448-1/24 x 43-5/16 x 12-19/32
Net Weightkg33115
lbs73254
Piping
ConnectionRefrigerantGasmm (inch)O.D Ø 19.05 (3/4) Flared Type
Liquidmm (inch)O.D Ø 9.52 (3/8) Flared Type
DrainmmO.D Ø 32I.D Ø 20 x 1
CompressorType, Number of Set-Hermetic-1 (Scroll), 1
Starting Method-Direct on-line starting
MotorType-2-pole 3-phase induction motor
Rated OutputkW-4.10
FanType, Number of SetTurbo fanPropeller fan
MotorType6-pole single phase induction motor6-pole single phase induction motor
Rated OutputkW0.0950.055 x 2
Air-heat ExchangerSlit-fin typeX-Louvre-fintype
Refrigerant ControlCoolCapillary tube-
Heat-Capillary tube
Refrigerant Oil (Charged)litre-MMMPOE
Refrigerant (Charged)kg-R407C (4.4)
(oz)(155)
Running
AdjustmentControl SwitchWireless or Wired RemoteControl-
Room Temperatu reThermosta t (Main Body)-
Safety DevicesInternal protector for compressor, Internal thermostat for fan motor,
Crankcase heater, High and heating pressure switch, Current transformer
Noise LeveldB (A)Hi 50 Lo 45Cooling 56, Heating 58
Power level dBCooling : Hi 65 Lo 60
Heating : Hi 65 Lo 60Cooling 69, Heating 71
 1. Cooling capacities are based on indoor temperature of 27°C D.B. (80.6°F D.B.), 19.0°C W.B. (66.2°F W.B.) and outdoor air
temperature of 35°C D.B. (95°F D.B.), 24°CW.B.(75.2°F W.B.)
 2. Heating capacities are based on indoor temperature of 20°C D.B. (68°F D.B.) and outdoor air temperature of 7°C D.B.
(44.6°F D.B.), 6°CW.B.(42.8°F W.B.)
ELECTRICAL DATA (50Hz)
ITEM / MODELCS-W50BB4P, CU-W50BBP8
Condition by JIS B 8615
VoltsV380400415
Phase3N3N3N
Power ConsumptionkWCool5.355.355.35
Heat5.455.455.45
Running CurrentACool9.29.29.2
Heat9.29.29.2
Starting CurrentA696969
Power Factor%Cool888481
Heat908682
*Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor.
PanasonicPower sourceAC, 3N~380V, 400V, 415V 50Hz
10