Panasonic CS-MKS12NKU - Manuals
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Manual Panasonic CS-MKS12NKU
Summary
• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here are divided into " Warning" and " Caution" items. Items in particular which may cause death or serious injury to the service personnel if the ...
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7980818182848585 A-1 ......................................................................... ................................................................................................... ................................................................................................ ...........
APPLICABLE INDOOR UNITS CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Multi-Outdoor Unit Indoor Unit 3-Room 4-Room 4-Room CS-MKS7NKU YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU Wall Mounted Type CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Multi-Outdoor Uni...
95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 1. OPERATING RANGE Maximum Minimum 115 °F DB 14 °F DB Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Cooling 7
2. SPECIFICATIONS 2-1. Unit Specifications Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU × 2 < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE. CompressorRefrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 6.3 1,420 17,000 5.00 ( 6,800 to 18,800 )( 1.90 to 5.50 ) Shipping Volum...
Outdoor Unit CU-3KS19NBU 2-2-1. Outdoor Unit Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-3KS19NBU DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) - Micro F VAC External Finish Acrylic baked-on enamel finish FV50S ... 1.91 (900) -- Internal Controller YesYes Alu...
Compressor High pressure switch H.P. Main accumulator Sub accumulator Service valve onnarrow tube Service valve onwide tube CN BN AN CW BW AW O.D.1/4" O.D.1/4" O.D.1/4" O.D.3/8" O.D.3/8" O.D.3/8" Heat exchanger Cooling cycle Indoor unit Outdoor unit Strainer Header Header M M...
Cooling Characteristics (RH : 46%, Indoor fan speed : High fan)(230V, 60Hz) (1) Low pressure performance chart (2) Operating current performance chart (3) Indoor discharge air performance chart • This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will ...
Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NKU × 1 Cooling Characteristics (RH : 46%, Indoor fan speed : High fan)(230V, 60Hz) (1) Low pressure performance chart (2) Operating current performance chart (3) Indoor discharge air performance chart • This performance chart shows operation of a single ...
7. FUNCTIONS 7-1. Explanation of Functions The numerical values such as temperature, frequency, time and current in parentheses are an example of CU-4KS31NBU and the values are different from the other models. Control/conditions INITIAL Breaker is ON. Power is supplied to the indoor and outdoor unit...
Control/conditions COOL The ON/OFF operation button on the remote controller is pressed. The room temperature has reached the desired temperature. The outdoor unit does not operate for 3 minutes even after the breaker is turned ON. This is in order to stabilize the return of oil to the compressor. T...
Control/conditions SENSOR DRY (1/f fluctuation fan) The ON/OFF operation button on the remote controller is pressed. The outdoor unit does not operate for 3 minutes even after the breaker is turned ON. This is in order to stabilize the return of oil to the compressor. The outdoor unit starts. (Compr...
7-2. Protective Functions The numerical values such as temperature, frequency, time and current in parentheses are an example of CU-4KS31NBU and the values are different from the other models. NOTE 7-2-1. Current Control The operating current may rise as a result of causes including increasing cooli...
Current(A) Frequency (Hz) Trip Hz reduction Hz increase prohibit Hz reductionHz increase prohibit Hz reduction Hz increase prohibit (16) (15.6) 0 (30) Example of operation during cooling The operating frequency upper limits shown in the figure below are established for frequency reduction and increa...
8. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) 8-1. Precautions before Performing Inspection or Repair Both the indoor unit and outdoor unit include electronic control circuits. Be sure to pay attention to the following before inspecting or repairing the outdoor-side electronic circuits. High-capac...
8-2. Trouble Diagnosis by Error Monitor Lamps 8-2-1. Location of the Error Monitor Lamps Remove the top plate of outdoor unit and the cover of Electrical Component Box. The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box. (Fig.1) 8-2-2. Display of the Erro...
8-3-1. Checking the outdoor unit 8-3. Checking the Outdoor System Work procedure Apply 220 V AC between terminals L1 and L2 on the outdoor unit terminal plate. • Short-circuit the T-RUN terminal to the COM terminal of TEST/T-RUN terminals. • The LED (red) on the control board must illuminate. • The ...
8-4-2. Inspection Points for Each Part (1) Outdoor control circuit board Refer to 8-3-1. Checking the outdoor unit. (2) Fuse Check it visually or the continuity with a tester. (3) Compressor Check for an open circuit in the compressor coil winding. (4) Compressor protective sensor (compressor discha...
8-5. Trouble Diagnosis of Fan Motor This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. Perform the trouble diagnosis by Test Run mode described on Installation Instru...
9. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. Characteristics of New Refrigerant R410A 9-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are abou...
Tubing precautions Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) i...
9-5. In Case of Compressor Malfunction CAUTION Should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible. Use only the tools indicated exclusively for R410A. See "9-3. Tools Specifically for R410A." 9-5-1. Procedure for Replacing Compres...
Valve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon tube) Charge with cylinder in normal position. Liquid Valve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CAUTION Never charge a large amount of liquid refrigerant at once t...
Length of tubing Evacuation time Less than 33 ft. (10 m) More than 10 minutes More than 33 ft. (10 m) More than 15 minutes 9-6. In Case Refrigerant is Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below ...
9-7. Charging Additional Refrigerant 9-7-1. When Tubes are Extended Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. 9-8. Retro-Fitting Existing Systems 9-8-1. Use ...
For Outdoor Unit This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264190581001 2011 CV6233187761 INSTALLATION INSTRUCTIONS NOTE Contents Page IMPORTANT!Please Read Before Starting .................................. 2 1...
IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operatingstandards. As the installer or service person, it is an importantpart of your job to install or service the system so it operatessafely and efficiently. For safe installation and trouble-free operati...
8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ $SSO\UHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI the flare and union tubes before connecting them, thentighten the nut with a torque wrench for a leak-freeconnection. &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ 'RQRWOHDNUHIULJHUDQWZKLOHSLSLQJZRUNIR...
4 1-2. Accessories Supplied with Unit Table 1 1-3. Optional Copper Tubing Kit Copper tubing for connecting the outdoor unit to theindoor unit is available in kits which contain the narrowand wide tubing, fittings and insulation. Consult yournearest sales outlet or air conditioning workshop. 1-4. Typ...
5 2. Installation Site Selection 2-1. Indoor Unit AVOID: direct sunlight. nearby heat sources that may affect performance of theunit. areas where leakage of flammable gas may be expected. placing or allowing any obstructions near the air conditionerinlet or outlet. installing in rooms that contain i...
6 install the indoor unit more than 3.3' (1 m) away from anyantenna or power lines or connecting wires used for tele-vision, radio, telephone, security system, or intercom.Electrical noise from any of these sources may affectoperation. install in a sturdy manner to avoid increased operatingnoise. Ta...
2-3. Outdoor Unit AVOID: heat sources, exhaust fans, etc. (Fig. 5a) damp, humid or uneven locations. DO: choose a place as cool as possible. choose a place that is well ventilated. install in a location where at least two sides are unob-structed, so that the flow of air at the intake port orexhaust ...
12 (1) Recommended dimensions of the baffle plates D F E C J H L I B K Q R A G O (3- 6.5 mm) 3- 1/4" (2- 6 mm) 2- 15/64" A B H C E F K I J G G D (4- 6.5 mm) 4- 1/4" Fig. 5h For Air Intake For Air Discharge Material to be used: Metal plate with corrosion protection treatmentPlate thicknes...
15 2-6. Diagram of Outdoor Unit Installation Never install only a single indoor unit. Be sure to connect indoor and outdoor units only incombinations that are listed in the catalog or in thecombination table that was provided with the outdoor unit. (Use caution. Connecting any other model may result...
16 3. Installation Process 3-1. Embedding the Tubing and Wiring Do not connect tubes to locations that are embedded. Be sure to bind refrigerant tubing and inter-unit cablestogether with vinyl tape. The power cable must be obtained on-site. (#12: Less than 85 ft.) # ... AWG (American Wire Gauge) Be ...
17 When reaming, hold the tube end downward and be sure thatno copper scraps fall into the tube. (Fig. 9) (3) Remove the flare nut from the unit and be sure to mount it on the copper tube. (4) Make a flare at the end of copper tube with a flare tool. * (Figs. 10 and 11) ( * Use “RIDGID” or equivalen...
19 4. Air Purging Air and moisture remaining in the refrigerant system haveundesirable effects as indicated below. Therefore, theymust be purged completely. pressure in the system rises operating current rises cooling efficiency drops moisture in the air may freeze and block capillary tubing water m...
20 Cap tightening torque:170 – 215 lbs·in(200 – 250 kgf·cm)(Tighten by hand, then use a wrench to turn approximately 45°.) Stopper Spindle Service portScrew diameter: 1/2UNF 20 threads Valve core Cap nut tightening torque:60 – 95 lbs·in(70 – 110 kgf·cm)(Tighten by hand, then use a wrench to turn app...
21 Pump Down When relocating or disposing of the air conditioner, request thisservice from the dealer where the unit was purchased, or from anappropriate agent. Perform pump-down as described below. What is pump-down? Pump-down refers to recovering the refrigerant gas from the refrig-erant cycle at ...
22 5. Wiring Instructions 5-1. General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) Provide a power outlet to be used exclusively for each unit, with a power supply discon...
23 WARNING Be sure to comply with local codes on running thewire from the indoor unit to the outdoor unit (sizeof wire and wiring method, etc.). Each wire must be firmly connected. No wire should be allowed to touch refrigeranttubing, the compressor, or any moving part. Be sure to connect power wire...
24 When connecting each power wire to the correspondingterminal, follow the instructions “How to connect wiringto the terminal” and fasten the wire securely tight withthe fixing screw of the terminal plate. How to connect wiring to the terminal a) For Indoor Unit (1) Cut the wire end with a cutting ...
25 1 2 3 1 2 3 1 2 3 1 2 3 Indoor unit B Indoor unit A Ground Power:Single-phase,230/208VAC 60HZ Power breaker(not provided) Outdoor unit Terminal board Label A Inter-unit cables#14 (not provided) Terminal board Inter-unit cables#14 (not provided) Terminal board Label B Label C Inter-unit cables#14 ...
26 Regulations on wire size differ from locality to locality. Forfield wiring requirements, please refer to your local electri-cal codes. Make sure that the installation fully complieswith all local and national regulations. (1) Remove access panel “C”. (Fig. 32) (2) Connect the inter-unit and power...
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