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Panasonic CS-W50BD3P, Service Manual, Page: 56 / 97

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Panasonic CS-W50BD3P Service Manual Download Page 56

25 CONTROL

25.1. Description of basic Functions

25.1.1. Cooling mode operation time chart

(*1)
Outdoor unit fan start control during cooling

At the start of cooling mode and drying mode operation, the outdoor unit heat exchanger outlet temperature is detected in order

to set the fan speed.
Operation is carried out at the fan speed detected for 30 seconds.

After 30 seconds, the heat exchanger outlet temperature is detected and the outdoor unit fan speed is changed automatically.

(*2)
Cooling low outdoor temperature protection
When the heat exchanger outlet temperature drops to less than 12°C for a continuous period of 10 minutes, the outdoor unit stops
running.
This is cancelled after 3 minutes (re-start prevention)

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Remote control displays and indoor unit operation continue during this time.

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The 10-minute countdown is cleared if the compressor stops or if the temperature at the outdoor unit outlet rises to 13.5°C or
higher.

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Summary of Contents for CS-W50BD3P

Page 1: ...11969 T All rights reserved Unauthorized copying and distribution is a violation of law CS W50BD3P CU V50BBP8 CS W50BD3P CU W50BBP8 15 CAPACITY AND POWER CONSUMPTION 33 16 DISCHARGE AND SUCTION PRESSURE 34 17 SOUND DATA 35 18 TWIN OPERATION 37 19 WIRING MISTAKE PREVENTION 42 20 TEST OPERATION AND SELF DIAGNOSIS 43 21 SETTING OF SAVE ENERGY AND THERMISTOR SWITCH 47 22 GROUP CONTROL 48 23 TROUBLE SH...

Page 2: ...nate although the main power supply switch is on 2 LCD display had indicated as normal illumination when power supply switch is on however outdoor 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 ON OFF switch is on 3 P C board had memorized wrong setting information a If main power supply is switched on with the wrong c...

Page 3: ...ration is important 2 1 6 Auto fan mode operation indoor unit Auto fan mode is added to existing modes Hi Me and Lo It automatically adjusts the fan speed according to the indoor temperature 2 1 7 Dry mode function Dry mode can make a comfortable indoor environment during wet season 2 1 8 Automatic changeover function heat pump models The unit automatically switches between cooling and heating in ...

Page 4: ...ressor and the sealing in of mechanical noise allows vibration noise to be greatly enclosed and suppressed 4 The heat exchanger 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 2 2 Automatic restart function When the electric power resumes after a power failure the unit will automati...

Page 5: ...ole in order to prevent drain water from leaking out of the unit Body connecting a drain elbow and a discharge pipe water leakages can be prevented even when the unit is installed against a wall 2 3 4 Space saving design allows units to be installed side by side continuously Servicing after installation can be carried out by removing the front covers 2 3 5 Easy test operation Test operation can be...

Page 6: ...ion Master unit and slave units can be set automatically in twin systems No address setting is necessary Multiple indoor units can be operated simultaneously with a single remote control Note that individual operation is not possible wires and signal wires If a connection error is made the relay does not operate and current does not flow to the circuit boards 2 4 2 Separate indoor outdoor unit pow...

Page 7: ...frigerant lines same as for R22 Q Refrigerant pipe storing Location Installation period Storing method Outdoors 1 month or more Pinching Less than 1 month Pinching or taping Indoors Any Pinching method Close off the ends of the pipes with pliers or similar tool and seal the opening by brazing Taping method Wind PVC tape around the ends of the pipes to seal the openings Do not work for refrigerant ...

Page 8: ...state It is recommended that a manifold with sight glass be used Q Boiling point at normal atmospheric pressure reference Refrigerant HFC32 HFC125 HFC134a Boiling point 52 C 49 C 26 C Use a special gauge manifold 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 Instructi...

Page 9: ...t kW 0 2 0 055 x 2 Air heat Exchanger X Louvre fin type X Louvre fin type Refrigerant Control Capillary tube Capillary tube Refrigerant Oil Charged L MMMAPOE 2 0 Refrigerant Charged kg oz R407C 4 40 155 Running Adjustment Control Switch Wired Remote Control Room Temperature Thermostat Main Body Safety Devices Internal protector for compressor Internal thermostat for F M Crankcase heater High press...

Page 10: ...Type 4 pole single phase induction motor 6 pole single phase induction motor Rated Output kW 0 20 0 055 x 2 Air heat Exchanger X Louvre fin type X Louvre fin type Refrigerant Control Capillary tube Capillary tube Refrigerant Oil Charged L MMMAPOE 2 0 Refrigerant Charged kg oz R407C 4 40 155 Running Adjustment Control Switch Wired Remote Control Room Temperature Thermostat Main Body Safety Devices ...

Page 11: ...5 TECHNICAL DRAWING CS W50BD3P OUTSIDE DIMENSIONS 11 ...

Page 12: ...CU V50BBP8 12 ...

Page 13: ...6 CIRCUIT DIAGRAM CS W50BD3P 13 ...

Page 14: ...CU W50BBP8 14 ...

Page 15: ...CU V50BBP8 15 ...

Page 16: ...APPLICABLE FOR ALL MODELS 16 ...

Page 17: ...APPLICABLE FOR ALL MODELS 17 ...

Page 18: ...APPLICABLE FOR ALL MODELS 18 ...

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Page 22: ...7 OPERATING INSTRUCTION 7 1 Wired Remote Control Name and function of each part 22 ...

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Page 24: ...8 REFRIGERATION CYCLE 8 1 Heating Model CS W50BD3P CU W50BBP8 8 2 Cooling Only Model CS W50BD3P CU V50BBP8 24 ...

Page 25: ...ain Power Applicable Voltage Phase Volts Hz Maximum Minimum W50BBP8 V50BBP8 3N 380 50 418 342 3N 400 50 440 360 3N 415 50 457 374 Indoor and Outdoor Temperature Q Q Q Q Cooling only type Model 50Hz V50BBP8 Operating Hz Indoor Temp D B W B C Outdoor Temp D B W B C Maximum Minimum Maximum Minimum Cooling 50 32 23 21 15 43 5 Q Q Q Q Heat pump type Model 50Hz W50BBP8 Operating Hz Indoor Temp D B W B C...

Page 26: ...frigerant subject to 30m piping length The rated amount of refrigerant is indicated on the name plate But when the piping length exceeds 30m additional charge is required according to the following table For other pipe length of other installation multiply by the following correction factor to determine the revised cooling capacity Heating Outer diameter of gas side pipe mm inch 9 52 3 8 0 18 12 7...

Page 27: ...2 19 05 30 50 Q Heat pump type 50Hz Model Name Standard piping specification Liquid piping dia mm Gas piping dia mm Gas charge less length m Additional gas volume g m CU W50BBP8 9 52 19 05 30 50 Attention Please never decrease the gas piping size It causes the breakdown of the compressor The equivalent piping length and the cooling and heating capacity change rate are same as the standard piping s...

Page 28: ...380 50 69 8 57 8 57 4 94 5 04 0 91 0 19 0 99 0 22 9 20 9 20 5 35 5 45 CU W50BBP8 400 50 69 8 55 8 55 4 91 5 01 0 93 0 21 1 02 0 23 9 20 9 20 5 35 5 45 415 50 69 8 53 8 53 4 88 4 98 0 96 0 22 1 04 0 25 9 20 9 20 5 35 5 45 COOLING ONLY MODEL CS W50BD3P 380 50 69 8 57 4 94 0 91 0 19 0 99 0 22 9 20 5 35 CU V50BBP8 400 50 69 8 55 4 91 0 93 0 21 1 02 0 23 9 20 5 35 415 50 69 8 53 4 88 0 96 0 22 1 04 0 2...

Page 29: ...n kW Power Factor RPM r min Air Volume m3 min 69Pa 7mmAq Hi 1 21 0 27 97 0 1360 40 H 59Pa 6mmAq Me 1 03 0 23 97 1 1230 35 49Pa 5mmAq Lo 0 92 0 20 94 5 1110 30 49Pa 5mmAq Hi 1 15 0 26 98 3 1270 40 L 39Pa 4mmAq Me 1 02 0 23 98 0 1140 35 29Pa 3mmAq Lo 0 90 0 20 96 6 1000 30 O O O O CS W50BD3P Fan Performance Curve 29 ...

Page 30: ...del OFF A 50Hz 15 RESET Automatic Discharge temp protection Discharge temperature thermistor Th1 Com pressor OFF C 120 Liquid compress protection Crankcase heater Input power W 34 41 Compressor protection Internal protector OFF C 50Hz 145 ON C 50Hz 61 Trip time C 3 10sec 48A For fan motor protection OFF C 50Hz 135 Internal protector 49F ON C 50Hz 85 Heating control Heat pump only Pressure switch O...

Page 31: ...ne Starting Starting Method Rated Output kW 4 1 Poles Insulation Glass 2 E Oil Type MMMAPOE Charge L 1 8 Evaporator Models CS W50BD3P Tube Material Outer Diameter mm 9 52 Thickness mm 0 36 Row 3 No of Tubes Row 10 Fin Material Thickness mm 0 115 Fin Pitch No inch 12 Fin Surface X Louvre fin Total Face Area m2 0 35 Fan Sirocco Type No of Unit 4 Fan motor Direct On Line Starting Starting Method Rate...

Page 32: ... 9 52 Thickness mm 0 3 Row 2 No of Tubes Row 46 Fin Material Aluminum Thickness mm 0 105 Fin Pitch No inch 14 Fin Surface X Louvre fin Total Face Area m2 1 05 Fan Type Propeller Fan No of Unit 2 Fan Motor Starting Method Direct on line Starting Rated Output kW 0 055 X 2 Poles 6 Phase Single Phase Insulation Class E 32 ...

Page 33: ...11 5 4 79 10 7 10 7 5 12 10 1 10 1 5 32 27 19 13 8 10 5 4 47 13 3 10 3 4 76 12 5 10 0 5 12 11 6 9 53 5 47 11 0 9 24 5 68 22 15 0 8 54 4 83 14 5 8 54 5 14 13 7 8 37 5 53 11 8 7 42 5 91 12 2 7 94 6 02 17 12 7 12 0 4 16 12 2 11 9 4 41 11 6 11 6 4 72 10 8 10 8 5 04 10 3 10 3 5 22 29 19 13 7 12 6 4 44 13 3 12 5 4 72 12 5 12 0 5 04 11 7 11 5 5 38 11 1 11 1 5 57 22 14 9 10 0 4 90 14 4 9 90 5 20 13 7 9 70...

Page 34: ...1 SATURATION TEMPERATURE OF DISCHARGE AND SUCTION PRESSURE O O O O Commonness TO ALL THE MODELS O O O O SATURATION TEMPERATURE OF DISCHARGE AND SUCTION PRESSURE For intake temperature consult the pressure Enthalpy Table R407C at the end 34 ...

Page 35: ...17 SOUND DATA 35 ...

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Page 37: ...nction is made between master units and slave units slave unit 1 at the indoor or remote control Install the remote control unit to the master unit It cannot be connected to slave units If indoor unit models with louvres and models without louvres have been connected together use an indoor unit with louvres as the master unit The remote control thermostat can also be set Optional circuit boards ca...

Page 38: ... carry out automatic address resetting If you would like to designate a particular indoor unit as the master unit because no master unit has been set use the DIP switches on the slave units to make the setting If automatic address setting is carried out once and then the slave unit addresses are set the addresses will then be stored inside the EEPROM Thus it is not necessary to repeat automatic ad...

Page 39: ...not turn off the power supply for at least 1 minute after automatic twin address resetting has been carried out 18 2 Piping connections The following table shows the pipe diameters for a twin type system Outdoor unit main pipe diameter mm Indoor unit combinations 34BB Indoor unit capacity HP 18BD3 18BD3 Liquid side ø 9 52 Branch pipe diameter Liquid side ø 6 35 ø 6 35 Gas side ø 15 88 Gas side ø 1...

Page 40: ... twin systems The pipe length is the total of the branch pipe L and the junction pipes Ia t Ib t Ic in order from the thickest diameter At the point where the pipe length exceeds 30 m determine the amount of refrigerant for the remaining liquid side pipe diameters and pipe lengths from the following table in order to charge the system 40 ...

Page 41: ...18 4 Wiring When both indoor and outdoor unit draw power Example 3 Phase power supply model When only the outdoor unit draws power 41 ...

Page 42: ...ected to terminals 1 and 2 and the control wires connected to terminals 3 and 4 are connected correctly If they are connected incorrectly connnect them correctly Normal operation should then commence Do not short the remote control wires to each other The protection circuit will be activated and the units will not operate Once the cause of the short is eliminated normal operation will then be poss...

Page 43: ...ssible that the connection error prevention circuits have operated In such cases check that the drive wires connected to terminals 1 and 2 and the control wires connected to terminals 3 and 4 are connected correctly If they are connected incorrectly connect them correctly Normal operation should then commence If the phase is reversed the LED on the printed circuit board will flash Check that the v...

Page 44: ...20 3 Test operation using the wired remote control 44 ...

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Page 46: ...O O O OSelf diagnosis error code table 46 ...

Page 47: ...RGY AND THERMISTOR SWITCH 21 1 Energy save setting Open the cover remote control unit and confirm the presence of the RP1 marking Energy save setting method should be different for with RP1 marking and without RP1 marking 47 ...

Page 48: ...power supply for at least 1 minute during automatic address setting otherwise the settings will not be made correctly Automatic address resetting for group control After setting DIP switches 1 to 4 to OFF and stop operation Then press the AIR SWING AUTO OPERATION MODE and Air conditioner No switches simultaneously Then addresses will be momentarily reset and then automatic address setting will be ...

Page 49: ...open circuit at section B Symptom Remote control unit Display of No power supply NOTE Indoor unit No display Outdoor unit LED3 and LED7 on printed circuit board flash 3 The main power is turned on while the remote control unit connection cord is not connected open circuit at section C Symptom Remote control unit Display of No power supply NOTE Indoor unit LED1 on printed circuit board stays illumi...

Page 50: ...and the unit does not operate at all Outdoor unit The LEDs on the printed circuit board flash and operation stops 3 The main power is turned on while the remote control connection cord is not connected open circuit at section C Symptom Remote control unit Display of No power supply Indoor unit master LED1 on the printed circuit board stays illuminated and the unit does not operate Indoor unit slav...

Page 51: ...ard flash 3 The main power is turned on while the remote control connection cord is not connected open circuit at section C Symptom Nothing abnormal appears on the remote control display and operation of indoor unit No 1 and indoor unit No 2 is possible However indoor unit No 3 cannot be operated Remedy 1 Turn off the main power 2 Connect the disconnected wires correctly 3 Turn the main power back...

Page 52: ...talled to indoor units and outdoor separately turn on the switch as the following procedure outdoor unit indoor unit with control and other indoor units When the slave units do not operate when address cannot be set Important The address for the group control cannot be reset using the above mentioned procedure 2 Manual address setting by dip switch DSW1 When you set the address manually set the di...

Page 53: ... indoor units and outdoor separately turn on the switch as the following procedure outdoor unit indoor unit with controller and other indoor units The AC number will be set at random 2 Manual address setting by dip switch DSW1 When you set the address manually set the dip switch of the PC board in the indoor unit as follow 3 Manual address setting by dip switch DSW1 When you set the address manual...

Page 54: ...tion for No 8 pin of dip switch DSW1 1 Set the OFF position for main power supply switch 2 Set the ON position for No 1 pin to No 4 pin of dip switch DSW1 on indoor unit P C board No 8 pin of dip switch DSW1 should be OFF position 3 Take main power supply switch ON for one minute and then main power supply switch off 4 Set the OFF position for No 1 No 2 No 3 and No 4 pin of dip switch DSW1 Importa...

Page 55: ...nits When a thermistor abnormality is judged to have occurred Set only the thermistor which shows an abnormality to the condition shown in the table below to carry out emergency operation Thermistor Cooling mode Heating mode Indoor unit Room temperature Fixed at 25 C Room temperature Shorted Open Thermistor Cooling mode Heating mode Outdoor unit Discharge temperature Open Shorted Heat exchanger ou...

Page 56: ...seconds the heat exchanger outlet temperature is detected and the outdoor unit fan speed is changed automatically 2 Cooling low outdoor temperature protection When the heat exchanger outlet temperature drops to less than 12 C for a continuous period of 10 minutes the outdoor unit stops running This is cancelled after 3 minutes re start prevention Remote control displays and indoor unit operation c...

Page 57: ...es not change 2 Cancelling This control is cancelled when the temperature detected by the indoor unit pipe temperature sensor is 15 C or higher If the outdoor unit stops even though the temperature is 15 C or higher restart prevention control will activated and the outdoor unit will not start again for 3 minutes The 9 minute countdown is cleared while the compressor is stopped The above illustrati...

Page 58: ...pears on the remote control display Other displays remain unchanged At the indoor unit the indoor unit fan stops In addition during hot starting the louvre stays at the horizontal position angle 0 3 Cancelling After 1 minute has passed since heating mode operation started or if the compressor has turned on hot starting is cancelled when the temperature detected by the indoor unit pipe temperature ...

Page 59: ... on the remote control disappears and the louvre operation returns to the previous setting However the indoor unit fan operates at LOW speed for 2 minutes after cancellation and then returns to the previous setting When hot start operation is cancelled by temperature When hot start operation is cancelled by time 25 5 Indoor unit fan control when thermostat is off during heating mode operation When...

Page 60: ...d However if the outdoor unit fan is stopped the start of defrosting will be delayed by 5 minutes The defrosting cycle is 50 minutes from the start of heating mode operation b Completion Defrosting mode operation stops 12 minutes after it starts or if the temperature detected by the outdoor unit heat exchanger outlet sensor is 25 C or higher After defrosting is complete hot starting commences c Fo...

Page 61: ...25 8 Indoor thermostat characteristic 1 Thermostat characteristic during cooling and heating modes 61 ...

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Page 64: ...ipation control 1 Start Carried out when the compressor switches from on to off when the remote control unit is used to stop operation 2 Operation The outdoor unit fan runs at SUPER HI speed for approximately 60 seconds and then stops 25 12 Discharge temperature control 1 Operation When the discharge temperature sensor detects a temperature of 100 C or higher during cooling mode operation the liqu...

Page 65: ...25 14 DIP switch settings Indoor unit printed circuit board DSW1 65 ...

Page 66: ...26 INSTALLATION INDOOR UNIT 66 ...

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Page 78: ...27 INSTALLATION OUTDOOR UNIT 78 ...

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Page 90: ...28 REPLACEMENT PARTS 28 1 INDOOR UNIT CS W50BD3P 90 ...

Page 91: ... ass y P45 T06880 2 12 Fan motor P06 T03520 P06 T03530 1 13 Stay fan motor P06 T03780 1 14 Shaft P05 T12620 P05 T12630 2 15 Bearing supporter P05 T12640 2 16 Connector shaft H08C205 2 17 Bearing H641003 2 18 Panel side R ass y P42 T02750 1 19 Panel side L ass y P42 T02960 1 20 Terminal board P06 T04680 1 21 Capacitor P06 T04640 1 22 Transformer P06 T04300 1 23 Remote control P A75C2240 1 24 Thermi...

Page 92: ...28 2 OUTDOOR UNIT 92 ...

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Page 96: ...PING SENSOR DISCHARGE 1 CWA501044 24 PIPING SENSOR COIL 1 CWA501045 25 SPRING FOR SENSOR 2 CWH711010 26 CABINET REAR PLATE 1 CWE02C1010 27 CONTROL BOARD 1 CWH141004 28 COMPRESSOR RELAY 1 CWA001005 29 TERMINAL BOARD ASS Y 1 CWA28K1029 30 CAPACITOR FAN MOTOR 2 DS461355QP A 3 5 460 31 ELECTRONIC CONTROLLER 1 CWA73C1211 32 TRANSFORMER 1 CWA401029 33 CURRENT TRANSFORMER BOARD 1 CWA742592 34 BRACKET FAN...

Page 97: ... 25 SPRING FOR SENSOR 2 CWH711010 26 CABINET REAR PLATE 1 CWE02C1009 27 CONTROL BOARD 1 CWH141004 28 COMPRESSOR RELAY 1 CWA001005 29 TERMINAL BOARD ASS Y 1 CWA28K1029 30 CAPACITOR FAN MOTOR 2 DS461355QP A 3 5µF 460 31 ELECTRONIC CONTROLLER EEPROM 1 CWA73C1202 32 TRANSFORMER 1 CWA401029 33 CURRENT TRANSFORMER BOARD 1 CWA742592 34 BRACKET FAN MOTOR 1 CWD541028 35 SCREW BRACKET FAN MOTOR 4 CWH551040 ...

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