Panasonic CU-KE18NKU manual

TECHNICAL & SER VICE MANU AL CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU DC INVER TER SPLIT SYSTEM AIR CONDITIONER Indoor Unit Outdoor Model No. Product Code No. 1 852 361 17 1 852 361 20 Outdoor Unit CS-KE12NB41 (Body) & CZ-18BT1U (P anel) CS-KE18NB4UW (Body) & CZ-18BT1U (P anel) Remote Controller[...]

• Before doing repair work, please read the " SAFETY PRECA UTIONS" carefully and fully understand them. • The precautionary items here are divided into " W arning" and " Caution" items. Items in par ticular which may cause death or serious injury to the ser vice personnel if the wor k is not perf or med correctly ,[...]

W arning If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite . If refrigerant gas leaks during the wor k, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated. Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle. If air or other cont[...]

T able of Contents SAFETY PRECA UTIONS T ABLE OF CONTENTS 1. OPERA TING RANGE 2. SPECIFICA TIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL D A T A 4. REFRIGERANT FLO W DIA GRAM 4-1. Refr igerant Flo w Diagram 5. PERFORMANCE D A T A 5-1. T emperature Char ts 5-2. Cooling Capacity [...]

10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance 10-2. Checking Continuity of Fuse on PCB Ass'y 11. REFRIGERANT R410A: SPECIAL PRECA UTIONS WHEN SER VICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-2. Checklist bef ore Ser vicing 11-3. T ools Specifically for R410A 11-4. T ubing Installation Procedures[...]

95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 80 °F DB / 67 °F WB – DB / – WB 1. OPERA TING RANGE Maximum Minimum Maximum Minimum 115 °F DB 0 °F DB 75 °F DB / 65 °F WB – DB / 0 °F WB T emperature Indoor Air Intake T emp. Outdoor Air Intake T emp. Cooling Heating 6[...]

2. SPECIFICA TIONS 2-1. Unit Specifications Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1 2-1-1. V er tical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 12.6 1,260 ( 2.5 to 12.6 ) ( 250 to 1,260 ) 11,900 3.5 ( 3,000 to 11,900 ) ( 0.9 to 3.5 ) Co[...]

Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1 D A T A SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature 80 °F DB / 67 °F WB Outdoor air temperature 95 °F DB / 75 °F WB Heating: Indoor air temperature 70 °F DB Outdoor air temperature 47 °F DB / 43 °F WB Shipping V olume Net Shi[...]

< 230V > Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU 2-1-2. V er tical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 8.3 1,860 ( 1.2 to 8.3 ) ( 250 to 1,860 ) 17,500 5.15 ( 4,000 to 17,500 ) ( 1.2 to 5.15 ) Cooling 10,600 6,900 230V Sing[...]

Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU D A T A SUBJECT TO CHANGE WITHOUT NOTICE. Shipping V olume Net Shipping W eight I b . (kg) Ib . (kg) cu.ft (m 3 ) inch (mm) Dimensions & W eight (Indoor Unit) Unit Dimensions Height Width Depth Individual Unit Body (CS-KE18NB4UW) P anel (CZ-18BT1U) Indoor Unit (CS-KE18NB4UW & [...]

Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU < 208V > 2-1-3. V er tical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 9.1 1,860 ( 1.2 to 9.1 ) ( 250 to 1,860 ) 17,500 5.15 ( 4,000 to 17,500 ) ( 1.2 to 5.15 ) Cooling 10,600 6,900 208V Sing[...]

Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU D A T A SUBJECT TO CHANGE WITHOUT NOTICE. Shipping V olume Net Shipping W eight I b . (kg) Ib . (kg) cu.ft (m 3 ) inch (mm) Dimensions & W eight (Indoor Unit) Unit Dimensions Height Width Depth Individual Unit Body (CS-KE18NB4UW) P anel (CZ-18BT1U) Indoor Unit (CZ-KE18NB4UW & [...]

Indoor Unit (Body) CS-KE12NB41 Indoor Unit (P anel) CZ-18BT1U 2-2. Major Component Specifications 2-2-1. Indoor Unit MPZN-12V .. . 2 Flap Motor T ype Stepping Motor Rating Model ... Q'ty Coil Resistance Oh m (Ambient T emp . 77 °F (25 °C)) Each P air of T er minal : 380 +/- 7% DC 12V PLD-12115ST -1 ... 1 A C115V , 60Hz 10.8 101 +/- 10% Coil [...]

Indoor Unit (Body) CS-KE18NB4UW Indoor Unit (P anel) CZ-18BT1U MP24ZN-12V .. . 2 Flap Motor T ype Stepping Motor Rating Model ... Q'ty Coil Resistance Oh m (Ambient T emp . 77 °F (25 °C)) Each P air of T er minal : 380 +/- 7% DC 12V Aluminum Plate Fin / Copper T ube 2 18.1 2.94 (0.273) F ace Area Coil Rows Fins per inch Heat Exchanger Coil f[...]

2-2-2. Outdoor Unit Control PCB Control Circuit Fuse Controls P ar t No. Microprocessor 125V 25A CB-CU-KE12NK1 D A T A SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VA C External Finish Acr ylic baked-on enamel finish FV50S ... 0.68 (320) - - Internal Controller Ye s Aluminum Plate Fin / Cop[...]

Outdoor Unit CU-KE18NKU Control PCB Control Circuit Fuse Controls P ar t No. Microprocessor 250V 25A CB-CU-KE18NKU D A T A SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VA C External Finish Acr ylic baked-on enamel finish FV50S ... 0.74 (350) - - Internal Controller Ye s Aluminum Plate Fin /[...]

2-3. Other Component Specifications Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE12NK1 CU-KE18NKU 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 1 0 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (10) (15) (20) (25) (30) (35) (40) • Ind[...]

3. DIMENSIONAL D A T A Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U 6-5/16 6-11/16 1-3/16 (30) 4-19/32 1-25/32 1-25/32 2-3/32 8-15/32 22-5/8 (575) 11-5/32 (283) 3 6 5 Less than 31/32 Less than 31/32 3-5/8 22-5/8 (575) 12-7/8 Suspension bolt pitch Suspension bolt pitch 21-1/32 (534) 21-1/32 (534) 12-7/16 23-5/8 (600) Ceiling [...]

10-13/16 3-19/32 ID:23/32 4-ID:15/16 21-3/16 6-3/32 4-9/32 2-5/32 Narrow tube service valv e dia.1/4" (6.35) Wide tube service valve dia.3/8" (9.52) 3-19/32 15/32 10-7/16 (265) 11-13/32 12-7/16 Outdoor Unit CU-KE12NK1 Unit : inch (mm) (852-0-0010-12700-0) 28-11/32 (720) 2-1/8 21-9/16 (548) 5/8 19[...]

Narrow tube service valv e dia.1/4" (6.35) Wide tube service valve dia.1/2" (12.70) 4-3/8 2-5/32 6-17/32 5-23/32 3/32 26-3/8(670) 23/32 1-13/16 34-21/32(880) 23-15/16 5-11/32 15/32 11-7/32(285) 12-7/32 13-5/32 11-17/32 ID:23/32 4-ID:15/16 1-3/8 2-17/32 2-13/32 Outdoor Unit CU-KE18NKU Unit : inch (mm) (852-0-0010-13200-0) 20[...]

Compressor Accumulator Wide tube service valv e Wide tube Narrow tube service valv e Narrow tube Heat exchanger Heat exchanger Muffler Capillary tube for split flow Cooling cycle (Defrosting cycle) Heating cycle Indoor unit Outdoor unit Electric expansion valv e Strainer Strainer M Muffler O. D. 3/8" (9.52 mm) O. D. 1/4" (6.35 mm) 4-wa y [...]

Compressor 4-wa y valv e Accumulator High pressure switch Wide tube service valv e Wide tube Narrow tube service valv e Narrow tube Heat exchanger Muffler Capillary tube for split flow Cooling cycle (Defrosting cycle) Heating cycle Indoor unit Outdoor unit Electric expansion valv e Strainer M O. D. 1/2" (12.7mm) O. D. 1/4" (6.35 mm) H.P .[...]

Hi F an Lo F an Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure perf ormance char t (2) Operating current perf or mance char t (3) Indoor discharge air perf or mance char t Check each perf ormance value in test-run mode. Electr ical performance values represent a combined indoor/outdoor v alue. NO TE 5.[...]

High pressure at wide tube service valve psig(MP aG) Operating current (A) 13 14 16 17 12 11 15 290 (2.0) 218 (1.5) 363 (2.5) 435 (3.0) 508 (3.5) 23 ( - 5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) 77 (25) 23 ( - 5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) 77 (25) 131 (55) 122 (50) 113 (45) 104 (40) 95 (35) 86 (30) 77 (25) 68 (20) Outdoor inlet air DB tem[...]

• Check each perf ormance value in test-run mode. Electr ical performance values represent a combined indoor/outdoor v alue. NO TE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) Low pressure perf ormance char t (2) Operating current perf or mance char t (3) Indoor discharge air perf or mance char t Indoor Unit CS[...]

• Check each perf ormance value in test-run mode. Electr ical performance values represent a combined indoor/outdoor v alue. • Overload pre vention operates to protect the air conditioner when outdoor ambient temperature becomes e xtremely high in heating mode. (Refer to "8-2. Protective Functions Ov erload prev ention during heating."[...]

5-2. Cooling Capacity Indoor Unit : CS-KE12NB41 & CZ-18BT1U Outdoor Unit : CU-KE12NK1 P ower Supply : 115V Single Phase 60Hz < Cooling Capacity > TC : T otal Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air T emp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB : Outdoor Ambient[...]

Indoor Unit : CS-KE18NB4UW & CZ-18BT1U Outdoor Unit : CU-KE18NKU P ower Supply : 230V Single Phase 60Hz < Cooling Capacity > TC : T otal Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air T emp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB : Outdoor Ambient T emp . 95 °F (35 ?[...]

5-3. Cooling Capacity (Low Ambient) Indoor Unit : CS-KE12NB41 & CZ-18BT1U Outdoor Unit : CU-KE12NK1 P ower Supply : 115V Single Phase 60Hz < Cooling Capacity (Low Ambient) > TC : T otal Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. 2. Above data represents the v alue when the operation frequency of a compressor is fix e[...]

Indoor Unit : CS-KE18NB4UW & CZ-18BT1U Outdoor Unit : CU-KE18NKU P ower Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) > TC : T otal Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. 2. Above data represents the v alue when the operation frequency of a compressor is fix ed. Abov e data does not take F reez[...]

5-4. Heating Capacity Indoor Unit : CS-KE12NB41 & CZ-18BT1U Outdoor Unit : CU-KE12NK1 P ower Supply : 115V Single Phase 60Hz < Heating Capacity > TH : T otal Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air T emp. 70 °F (21.1 °C) DB : Outdoor Ambient T emp . 47 °F (8.3 °C) DB / 43 °F (6.1 °C) WB 2. 3. Abo[...]

Indoor Unit : CS-KE18NB4UW & CZ-18BT1U Outdoor Unit : CU-KE18NKU P ower Supply : 230V Single Phase 60Hz < Heating Capacity > TH : T otal Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air T emp. 70 °F (21.1 °C) DB : Outdoor Ambient T emp . 47 °F (8.3 °C) DB / 43 °F (6.1 °C) WB 2. 3. Above data represents th[...]

6. ELECTRICAL D ATA 6-1. Electrical Characteristics Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1 Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor + Compressor Performance at 115V Single-phase 60Hz Rating conditions Running amp. A 0.21 Power input W 18 12.39 1,242 Heating Cooling 12.6 1,260 Indoor Unit Outdoor Unit Compl[...]

Indoor Unit CZ-KE18NB4U & CZ-18BT1U Outdoor Unit CU-KE18NKU Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.15 Power input W A W A W A W 22 8.15 1,838 Rating conditions: Indoor air temperature: 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB Outdoor air temperature: [...]

6-2. Electric Wiring Diagrams Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U 8F A2-5250-46900-2 1 2 3 4 5 6 1 2 3 4 5 6 FM DP F AN MOT OR DRAIN PUMP DCM 6P (BLU) 6P (WHT) DP 3P (BLU) 3P (RED) PWM/POW 7P (RED) PWM/POW 7P (RED) RC 4P (WHT) IND 7P (WHT) FS 3P (RED) FLAP 5P (WHT) ROOM 2P (YEL) COIL-1 2P (RED) IND LAMP ASSY FLAP (W[...]

8F A2-5251-12200-2 Outdoor Unit CU-KE12NK1 36[...]

8F A2-5251-11900-2 Outdoor Unit CU-KE18NKU 25A CONTROLLER DCFM MV0 RV 0 RV 1 F AN MOT OR 1 2 3 4 5 6 7 BLK WHT RED BLU YEL BLK WHT RED BLU YEL BLK BLK RED RED w w w w w w w w w w 1 2 3 4 5 5 1 2 4 3 1 2 1 2 12 34 5 6 7 1 2 4 5 6 7 3 1 2 12 3 4 34 5 5 1 1 2 2 1 2 1 2 3 3 1 2 1 2 123 4 1 2 4 3 123 4 1 2 4 3 2 1 2 1 FERRITE CORE COMPRESSOR THERMIST OR[...]

ACL (Reset) button 1HR. TIMER button ON/OFF operation button HIGH POWER button T est run mode Self-diagnostic mode Address setting mode Fig. 1 Fig. 2 Fig. 3 Ta b ACL button 7. MAINTENANCE 7-1. Address Setting of the Remote Contr oller The address can be set in order to pre vent interf erence between remote controllers when two indoor units are inst[...]

One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Disconnect Hold the resin connector cov er , and pull the connector off . Y ou cannot disconnect the connector by pulling the wire since it is lock ed inside. Alwa ys hold the cov er to disconnect. (See illustration at left.) F or the [...]

7-3. Disassembly Pr ocedure 7-3-1. Remove the air intake grill. (1) Slide the 2 latches each to the corresponding arrow direction. (Fig. 1 and Fig. 2) Open downw ard the air intake grill located on the latch side. (2) Undo the air intake grill drop pre ventiv e hook. (Fig. 3) Undo the 2 hinges f or the gr ill and remov e the air intake grill. 7-3-2[...]

NO TE 7-3-3. Remo ve the ceiling panel. (1) Open the clamp (4 locations) and remov e the 2 lead wires from the clamps. (Fig. 6) (2) Remov e the 4 screws fixing the corner cov er (at 3 locations) and indicator cover (at 1 location). (Fig. 6) (3) Press the center 1 of the cov er and remov e the cov er with the section 2 pulled down. (Fig. 7) (4) Remo[...]

1 2 3 7-3-4. Remove the indoor air temperature sensor . (1) Disconnect the connector CN08 (ROOM 2P) in the control bo x and remov e the indoor air temperature sensor . (Fig. 10) 7-3-5. Remo ve the power bo x and control bo x. (1) Remov e a screw and remo ve the terminal cover . (Fig. 11) (2) Remov e the 2 screws and remo ve the power bo x cov er . [...]

12 3 (4) Disconnect the connector CN07 (DP 2P) in the power bo x. (Fig. 13) Remov e a screw and disconnect the ground cab le. (Fig. 13) (5) Disconnect the connector CN03 (DCM 6P) in the power bo x. (Fig. 14) (6) Remov e the 4 screws and remo ve the power bo x. (Fig. 14) (7) Disconnect the connectors CN06 (FS 3P) and CN09 (COIL-1 2P) in the control [...]

F or the remov al of the follo wing components, perf or m any work after removing the indoor unit (main body) from the ceiling. Main body lower section Heat exchanger sensor Drain pump Float s witch T urbo fan F an motor Heat e xchanger 1. P erform the wor k after draining the w ater to prev ent the water leakage from the drain pan. • Put a buc k[...]

7-3-7. Remo ve the heat exchanger sensor . (1) Remov e the heat exchanger sensor from the sensor holder . (Fig. 19) 7-3-8. Remo ve the drain pump and float switch. (1) Remov e the 2 screws (Fig. 20) (2) Loosen the clamp and disconnect the drain hose from the drain pump . (Fig. 20) (3) Remov e the drain pump from the main body upper section. (Fig. 2[...]

7-3-9. Remo ve the turbo fan and fan motor . (1) Remov e a nut and remov e the turbo f an. (Fig. 22) (2) Remov e the 2 screws and 3 nuts , and remov e the fan motor . (Fig. 23) 7-3-10. Remo ve the heat exchanger . (1) Remov e the 3 screws . (Fig. 24) (2) Remov e the 3 screws . (Fig. 25) (3) Remov e the heat exchanger from the main body upper sectio[...]

Emergency operation SENSOR DR Y A UT O cooling/heating operation Selecting the operation mode During DR Y operation, the system adjusts the room temperature and f an speed according to the conditions in the room, in order to maintain a comf or table room environment. SENSOR DR Y operation • DR Y operation is as shown in the figure below . P AM- c[...]

HIGH PO WER NIGHT SETB A CK Lamp colors Timer backup This function acts to raise the power but keeps the AC system in the same operating mode. This function is set with the HIGH PO WER button on the remote controller . (It can be set regardless of the temperature and f an speed settings.) HIGH PO WER operation from remote contr oller The unit opera[...]

Overload prevention during heating During HEA T operation, the temperature of the indoor heat e xchanger is used to control the frequency and lessen the load on the compressor bef ore the protective de vice is activated. Cold-air prevention during heating Compressor dischar ge temperature control During heating, the fan speed is set to "LL&quo[...]

This function pre vents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply v oltage. In these cases, operation frequency is reduced or operation is interrupted auto- matically to control the e[...]

< Clock displa y > T est run mode Self-diagnostics mode 9. TR OUBLESHOO TING (BEFORE CALLING FOR SER VICE) 9-1. Precautions before P erf orming Inspection or Repair NO TE After checking the self-diagnostics monitor , tur n the power OFF bef ore star ting inspection or repair . High-capacity electrolytic capacitors are used inside the outdoor [...]

Since the indications cover various units, the corresponding parts listed below may not be present in some models. (1) Self-diagnostics Lamps (1) DRAIN PUMP F AILURE (2) FS F AILURE (3) CHOKED DRAIN HOSE 8512-5261-99100-1 REMO TE CONTROL receiver OPERA TION lamp TIMER lamp OPERA TION button HIGH PO WER lamp INDOOR UNIT TIMER LAMP BLINKING (3 SEC . [...]

(2) If the self-diagnostics function fails to operate Check the indoor unit. Is the fuse blown? Replace the controller . Replace the circuit board or the fuse. No indicators illuminate and the indoor f an does not rotate. Check the po wer v oltage. • • Nor mal Blown 9-3. Checking the Indoor and Outdoor Units (1) Checking the indoor unit (2) Che[...]

(3) Serial Communication Err or Identification Procedure Ref er to "Method of Self-Diagnostics" for the self-diagnostics procedure . (3-1) Condition: E01 < Before the Operation > If the lamps on the main body show the f ollowing conditions after the completion of self-diagnostics , a communication error between the indoor unit and o[...]

What is the latest self-diagnosis result ? Condition: E12 Defect in the outdoor unit P .C. board. Condition: E01 Defect or connection error in the inter-unit cable Defect in the indoor unit P .C. board ( Continued from the pre vious page A. ) A ( Continued from the pre vious page B. ) B 1 2 4 3 5 6 1 2 3 Outdoor Unit Po we r Fig. 3 Indoor Unit 1 2 [...]

(3-2) Condition: E12 T roubleshooting Serial Communication 1. T ur n off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF . 2. Disconnect the cable from the terminal 3 on the indoor unit terminal str ip . (Fig. 7) Defect in the indoor unit P .C. board Defect in the outdoor unit P .C. board 1. T ur n ON the [...]

[T rouble symptom 3] Motor rotates for some time (se veral seconds), b ut then quickly stops, when the indoor unit operates. (There is trouble in the system that pro vides feedbac k of motor rotation speed from the motor to the indoor unit controller .) [T rouble symptom 4] F an motor rotation speed does not change during indoor unit operation. [T [...]

9-4-2. Outdoor F an Motor This outdoor DC f an motor contains an inter nal control PCB. Theref ore, it is not possible to measure the coil resistance, and the f ollowing procedure should be used to chec k the motor . P erf or m the trouble diagnosis b y T est Run mode descr ibed on Installation Instructions. [T rouble symptom 1] The fan does not st[...]

9-5. Noise Malfunction and Electromagnetic Interference An inv er ter A/C operates using pulse signal control and high frequencies. Therefore , it is susceptible to the eff ects of external noise, and is lik ely to cause electromagnetic interference with nearb y wireless devices . A noise filter is installed f or ordinar y use, pre venting these pr[...]

Insulation tester Probe Clip Ground wire T er minal plate Copper tube or metallic par t Clip Insulation tester Probe Fig. 1 Fig. 2 Fig. 3 Fig. 4 Copper tube or metallic par t Clip Insulation tester Probe Clip Insulation tester Probe Metallic par t F rom fan motor , compressor and other par ts 10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of [...]

Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 10-2. Checking Continuity of Fuse on PCB Ass'y Remov e the PCB Ass'y from the electrical component bo x. Then pull out the fuse from the PCB Ass'y . (Fig. 5) Check f or continuity using a multimeter as sho wn in Fig. 6. 61[...]

11. REFRIGERANT R410A: SPECIAL PRECA UTIONS WHEN SER VICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotr opic refrigerant mixture . Its refrigeration capacity and energy efficiency are about the same level as the con ventional refri[...]

T ubing precautions Refrigerant R410A is more easily affected b y dust or moisture compared with R22, thus be sure to temporarily cov er the ends of the tubing with caps or tape prior to installation. Ne ver use 0.0276" (0.7 mm)-thic k copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since air conditioners with R4[...]

11-3. T ools Specifically f or R410A For servicing, use the following tools f or R410A Gauge manif old Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recov er y unit V acuum pump with anti-rev erse flow (*1) (Solenoid valv e-installed type, which pre v ents oil from flowing back into the unit when the power is of[...]

11-5. In Case of Compressor Malfunction CA UTION Should the compressor malfunction, be sure to make the switch to a replacement compressor as quickl y as possible. Use only the tools indicated e xclusively f or R410A. See "11-3. T ools Specifically for R410A." 11-5-1. Pr ocedure for Replacing Compressor (1) Recovering refrigerant Any rema[...]

V alve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon tube) Charge with cylinder in normal position. Liquid V alve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CA UTION Never char ge a lar ge amount of liquid refrigerant at once to the unit. This may cause damage to the comp[...]

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 11-6. In Case Refrigerant is Leaking CA UTION Never attempt to char ge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described belo w to locate points of leaks and carry out repair[...]

11-7. Charging Additional Refrigerant 11-7-1. When T ubes are Extended Obser v e the proper amount of refr igerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only . 11-8. Retro-Fitting Existing Systems 11-8-1. Use of Existing Units Never use ne w refriger[...]

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Operating Instructions CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU (852-6-4181-213-00-2) APPENDIX A A-1[...]

Split System Air Conditioner Model No. Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181213002 Indoor Units CS-KE12NB41 CS-KE18NB4UW Outdoor Units (For Single use) CU-KE12NK1 CU-KE18NKU (For Multiple use) CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU Operating Instructions Before operating the unit, read these operating instructions thoro[...]

2 FEA TURES This air conditioner is a n inverter type u nit that automaticall y adjusts ca pability as appropriate. Details on these functions are provided be low; ref er to these descriptions when using the air conditioner . • Mic roprocessor Contr olled Operation The interior compa r tment of the remote controll er contains sev eral f eatures t[...]

3 INST ALLA TION LOCA TION • W e recommend that this air conditioner be installed properl y by qualified ins tallation technicians in accor dance with the Installation Instr uctions pr ovided with the unit. • Bef ore installation, check that the v oltage of the electric supply in your home or off ice is the same as the voltage shown on the name[...]

4 NAMES OF P AR TS This illustr ation is based on the e xternal view of a standa rd model. Consequently , the shape ma y differ from th at of the air conditioner which y ou hav e selected. This air conditioner consists of an i ndoor unit and an outdoor unit. Y ou can control the air cond it ioner with the remote controller . UNIT DISPLA Y AND OPERA[...]

5 REMO TE CONTROLLER (DISPLA Y) (1) Operation mod e A U T O ........... ................ .......... HEA T .................. ................ .... MILD DR Y .... ................... ....... COOL ........... ................ .......... F AN .............. ................ .......... (2) F an speed A utomatic operation ............... HIGH ..........[...]

6 REMO TE CONTROLLER T ransmitter When you press the buttons on t he remote controller , the mark appears i n the displa y to transmi t the setting ch anges to the recei ver in the air conditioner . Display Inf or mation on the oper ating conditions is di splay ed while the remote controller is s witched on. If the uni t is turned off, FLAP setting[...]

7 Sensor A temperature sensor ins ide the remote controller senses the room temperature . (Co ver closed ) CLOCK button A CL button (ALL CLEAR) Puts the remote controller into pre-ope rati on status. Alwa ys press this button after replacing the batteries and setting the S/M s witch. ON/OFF operation b utton This button is for turning the air condi[...]

8 USING THE REMO TE CONTROLLER HO W T O INST ALL BA TTERIES 1. Slide the co ver in the d irection indicated by the arrow and remo ve it. 2. Install two AAA alkaline batteries. Mak e sure the batteries point in the direction marked in t he batte r y compar tment. 3. Use a thin object such as the tip of a pen to press the ACL b utton. S/M (Single/Mul[...]

9 OPERA TION WITH THE REMO TE CONTROLLER 1. A utomatic Operation When the remote co ntroller’ s S/M swit ch is at the “S” (Single) position This unit automatically s witches between cooli ng operation and heating operation acc ording to the differen ce between the room temperature and the temper ature setting. When the remote co ntroller’ s[...]

10 3. Adjusting the Fan Speed A. A utomatic fan speed Simply set the F AN SPEED selector button to the position. This automatically sets th e best fan speed for the room temperature. B. Manual fa n speed If you w ant to adjust fan speed manually during operati on, just set the F AN SPEED selector bu tton as desired. [ , , or ] 4. Fan Onl y 5. Night[...]

11 • When the HIGH POWER button is pressed, the unit operates at maximum output f or 30 minutes , regardless of the desired temperature . The fan speed is 1 step abov e “High”. • HIGH POWER Mode cannot be used when the operation mode is in A utomatic Oper ation. • When set to High fan speed during heating oper ation, the fa n r uns at Hig[...]

12 2. How to set the OFF time (Example) T o stop the air conditioner at 11:00 am. 3. How to set the ON time (Example) T o star t operation at 7:10 am. 4. How to set dail y ON/OFF repeat timer (Example) T o star t operation at 7:10 a m. and stop the air conditioner at 11:00 am. • The ON/OFF combination timer uses the current time as the ref erence[...]

13 USING THE 1-HOUR OFF TIMER 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regar dless of whether the unit is on or off when this button is pressed. The indicator in the displa y i ndicates that this function is operating. Setting pro cedure: Regardless of whether the unit is o perating or stopped, press [...]

14 OPERA TION WITHOUT THE REMO TE CONTROLLER If you ha ve lost the remote control ler or it has trouble, f ollow the steps below . When the air conditioner is not running Each time the OPERA TION bu tton is pr essed, the type o f operation conducted is indicated b y the changing color of the OPERA TION lamp . Press the button and select the lamp co[...]

15 Air filter The air f ilter collects dust an d other par ticles from the ai r and should be cleaned once ev er y 6 months . If the fil ter gets bloc ked, the eff iciency of the air conditioner drops greatly . The frequency with which the f ilter should be cleaned depends on the en vironment in which the unit is used. How to remo ve the filter 1. [...]

16 TR OUBLESHOO TING (BEFORE CALLING FOR SER VICE) If your air co nditioner does not work properly , f irst check the f ollow ing points bef ore requesting service. If it still does not work properly , contact your d ealer or service center . OPERA TING RANGE The air conditi oner is operab le within the temper ature ranges as listed belo w: WIRED R[...]

17 SPECIFICA TIONS Model No. • F or Single use • F or Single use Outdoor Unit Indoor Unit CS-KE12NB41 CU-KE12NK1 11,900 [ 3,000 ~ 11,900 ] 47 Single-phase, 115 V , 60 Hz 3.50 [ 0.90 ~ 3.50 ] 4.00 [ 0.90 ~ 4.00 ] 13,600 [ 3,000 ~ 13,600 ] - 49 - 21-9/16×28-11/32×10-7/16 (548×720×265) - 34/32/31 - 35/34/32 Heating Capacity Operation Sound Uni[...]

18 SPECIFICA TIONS (CONTINUED) Model No. • F or Multiple use • F or Multiple use Heating Capacity Operation Sound Unit Di m ensions (H×W×D) Net W eight P ower Source Cooling Capacity kW BTU/h kW BTU/h inch( mm ) lbs.(kg) Cooling Operation (H/M/L) Heating Operation (H/M/L) dB(A) dB(A) Indoor Unit CS-KE18NB4UW 17,500 Single-phase, 208-230 V , 6[...]

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INST ALLA TION INSTRUCTIONS CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU (852-6-4190-577-00-2) APPENDIX B A-2[...]

This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264190577002 2011 INST ALLA TION INSTRUCTIONS NOTE CV6233187839 Contents Page IMPORT ANT! Please Read Before Starting .................................. 2 1. GENERAL ....................................................[...]

2 IMPORT ANT! Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently . For safe installation and trouble-free operation, you must:  Carefully read this instr[...]

3  8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ  $SSOUHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak- free connection.  &KHFNFDUHIXOOIRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ  &apos[...]

4 Printed on container box For unit & PVC tube connection For drain hose connection Remarks Q’ty For full-scale installation diagram 1 2 4 4 4 4 2 1 For temporarily suspending indoor unit from ceiling Flare insulation For wide / narrow tube connection For wide / narrow tube / flare nut connection For flare / drain insulating connection For dr[...]

5 1-5. Additional Materials Required for Installation 1. Refrigeration (armored) tape 2. Insulated staples or clamps for connecting wire (See local codes) 3. Putty 4. Refrigeration lubricant 5. Clamps or saddles to secure refrigerant tubing 2. Installation Site Selection 2-1. Indoor Unit A VOID:  direct sunlight.  nearby heat sources that may[...]

6 2-2. Outdoor Unit A VOID:  heat sources, exhaust fans, etc. (Fig. 3)  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 or exhaust port is not blocked, and s[...]

7 Hole-in-anchor Concrete Insert Suspension bolt (M10 or 3/8") Hole-in-plug (locally purchased) Fig. 6-1 23-5/8"(600 mm ) 21-1/32"(534 mm ) Ceiling opening dimensions Suspension bolt pitch 23-5/8"(600 mm ) 21-1/32"(534 mm ) Ceiling opening dimensions Suspension bolt pitch Drain tube connection por t 22-5/8"(575 mm ) 6-[...]

8  In cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of 2.78 ft. (850 mm) above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 2.78 ft. (850 mm) above the bottom surface of the ceiling. Doing so will result in water leakage. (Fig. 6-7[...]

9 A must be within the range of 1/2"(13 mm ) to 23/32"(18 mm ). (Fig. 6-11) If not within this range, malfunction or other trouble may occur. Ceiling opening dimension Ceiling side A Indoor unit 3-5. Checking the Drainage After wiring and drain piping are completed, use the following pro- cedure to check that the water will drain smoothly[...]

10 (2) Removing the corner cover and indicator cover a) While lightly pressing the cen- ter of the corner cover , pull up the tab for the screw hole. Use the same procedure to remove the indicator cover . (Fig. 6-16) 3-6-2. Installing the Ceiling Panel (1) Hang the temporary latches on the inside of the ceil- ing panel to the receptacle on the unit[...]

11 Fig. 6-23 Fig. 6-24 Fig. 6-25 fit into the holes in the ceiling panel. Place the corner cover so that the 3 tabs Then fasten it in place with the supplied screws. Pin Hole for ceiling panel hook the grille from dropping Hook that prevents Can be installed rotated 90 * The grille can be installed with these hinges facing in any of 4 directions. 3[...]

3-7. Wiring Instructions 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 disconnect and circuit breaker for overcurrent protection prov[...]

13 Cross-Sectional (A)+(B) (A) Power Supply Wiring Length (ft) (C) Control Fuse or Circuit Area (A WG) (B) Power Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CU-KE12NK1 131 (Max.) 230 (Max.) 65 (Max.) 20A CU-KE18NKU 131 (Max.) 230 (Max.) 100 (Max.) 15A # ... A WG (American Wire Gauge) T able 4  Be sure to comply wit[...]

14 When connecting each power wire to the corresponding terminal, fol- low the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the 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 pliers, then strip the insulation to expo[...]

15  For stranded wiring (1) Cut the wire end with a cutting pliers, then strip the insulation to expose the stranded wiring about 3/8" (10 mm) and tightly twist the wire ends. (Figs. 1 1 and 12) (2) Using a screwdriver , remove the terminal screw(s) on the terminal plate. (3) Using a ring connector fastener or pliers, securely clamp each st[...]

16 5. Refrigerant T ubing 5-1. Use of the Flaring Method Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. 5-2. Flaring Procedure with a Flare T ool (1) Cut th[...]

17 5-4. Connecting T ubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten- ded from the wall with the outdoor side tubing. (Fig. 21) b) T o fasten the flare nuts, apply specified torque as: T able 5 5-5. Insulation of Refrigerant T ubing T o prevent heat loss and wet floors due to dripping of con- densa[...]

Be sure to use a manifold valve for air purging. If it is not available, use a stop valve (field supply) for this purpose. The “Hi” knob of the mani- fold valve must always be kept closed. Insulated tubes Drain hose Clamp Hi Lo Indoor unit Outdoor unit Manifold v alve (Exclusively f or R410A) Pressure gauge V acuum pump Charging hose (Exclusive[...]

19 (4) With the “Lo” knob of the manifold valve open, run the vacuum pump. The operation time for the vacu- um pump varies with tubing length and the capacity of the pump. The following table shows the amount of time for evacuation: T able 6 Required time for evacuation when 26.4 gal/h (100 liter/h) vacuum pump is used If tubing length is If tu[...]

20 How to T est Run the Air Conditioner After turning on the power of the air conditioner , use the remote controller and follow the steps below to conduct the test run. (1) Set the remote controller in T est Run mode. (Fig. 29) a) Press and hold the HIGH POWER button and the 1HR. TIMER button. b) Then press and hold the ACL (Reset) button with a p[...]

21  Pump Down Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit. Pump Down Procedure Be sure to carry out pump down with the unit in Cooling mode. (1) Connect the Lo side charging hose of[...]

22 7 . Remote Controller Installation Position The remote controller can be operated from either a non-fixed position or a wall-mounted position. T o ensure that the air conditioner operates correctly , do not install the remote controller in the following places:  In direct sunlight  Behind a curtain or other place where it is covered  Mo[...]

23 ACL (Reset) button 1HR. TIMER button ON/OFF operation button HIGH POWER button 8. Address Switch 8-1. Address Setting of the Remote Controller The address can be set in order to prevent interfer- ence between remote controllers when 2 indoor units are installed near each other . The address is normally set to “A.” T o set a different address[...]

Operating Instructions CZ-RD515U (852-6-4181-230-00-1) APPENDIX C A-3[...]

Wired Remote Controller Model No. CZ-RD515U Operating Instructions Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181230001 CV6233187877 This wired remote controller is designed for both the “COOL/DRY/HEAT Model” and “COOL/DRY Model” indoor unit. Once the wired remote controller is connected, the wireless remote controlle[...]

2 FEA TURES • Micropr ocessor Co ntrolled Operation The interior comp ar tment of the re mote controller cont ains sev eral f eatures to facilitate automatic op eration, easy logically displa yed f or easy use. • 24-Hour ON or OFF Timer This timer can be set to automatically turn the unit on or off at any time within a 24 hour period. • 1-Hou[...]

3 INST ALLA TION LOCA TION W e recommend that this wired remote controller be installed proper ly by qualified installation technicians in accor dance with the Installation Inst ructions pro vided with the unit. Avo i d : T o protect the air conditioner from heavy corrosion, av oid installing the outdoor unit where salty sea water can splash direct[...]

4 REMO TE CONTROLLER Display Inf or mation on the oper ating conditions is dis play ed while the remote controller is s witched on. If the unit is tur ned off , only the mode that was set previously is still displayed. F AN SPEED selector b utton : The air conditioner automatically dec ides the fan speeds . : High f an speed : Medium f an speed : L[...]

5 Sensor A temperature sensor inside the remote controller senses the room temperature. ON/OFF operation b utton This bu tton is for t ur ning the air condit ioner on and off. 1 HR. TIMER b utton (1-HOUR OFF TIMER) : When y ou press this button, regard less of whether the un it is operating or s topping, the unit operates for one hour and then shut[...]

6 REMO TE CONTROLLER (DISPLA Y) (1) Operation mod e A U T O ........... ................ .......... (only f or COOL/DR Y/HEA T Model) HEA T .................. ................ .... (only f or COOL/DR Y/HEA T Model) MILD DR Y .... ................... ....... COOL ........... ................ .......... F AN .............. ................ ..........[...]

7 OPERA TION WITH THE REMO TE CONTROLLER 1. A utomatic Operation (only f or COOL/DR Y/HEA T Model) • Single use This unit automatically s witches between cool ing operation and heating operatio n according to the difference be tween the room temperature and the t emperature setting. • Multiple use The air conditioner calculates the diff erence [...]

8 3. Adjusting the Fan Speed A. A utomatic fan speed Simply set the F AN SPEED selector button to the position. This automatically sets th e best fan speed for the room temperature. B. Manual fa n speed If you w ant to adjust fan speed manually during operati on, just set the F AN SPEED selector bu tton as desired. [ , , or ] 4. Fan Onl y 5. Night [...]

9 SETTING THE TIMER 1. How to set the p resent time (Example) T o set to 9:10 pm. 2. How to set the OFF time (Example) T o stop the air conditioner at 11:30 pm. T o cancel the setting, press the TIMER SELECT button twice. 3. How to set the ON time (Example) T o star t operation at 7:10 am. T o cancel the setting, press t he TIMER SELECT button thre[...]

10 USING THE 1-HOUR OFF TIMER 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regar dless of whether the unit is on or off when this button is pressed. The indicator in the displa y i ndicates that this function is operating. Setting pro cedure: Regardless of whether the unit is o perating or stopped, press [...]

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A-4 INST ALLA TION INSTRUCTIONS CZ-RD515U (852-6-4190-592-00-0) APPENDIX D[...]

Parts supplied with the remote controller See T able 1. Remote controller installation guidelines  Mount the remote controller 3.3 to 4.9 ft. (1 to 1.5 meters) off the floor where it can sense the average temperature of the room.  Do not mount the remote controller in a place exposed to direct sunlight or where it is exposed to outside air su[...]

2 A. Installing with in-wall junction box (1) Install the junction box (locally purchased) into the wall. (Figs. 2-a and 3) (2) Pass the wire harness through the junction box and conduit. (Fig. 3) (3) Insert a flathead screwdriver into the 5 tab locations and disconnect the back plate of the remote controller by lifting up slightly . (Fig. 2-b) The[...]

Fig. 8 Indicator Wire harness Ceiling panel T erminal cover Clamps 7P IND and 4P RC wiring connector 5P FLAP wiring connector Clamping strap FLAP RC IND 7P 4P 5P FLAP wiring connector Wire harness Remote controller Wire harness Control PCB Indicator 7P IND and 4P RC wiring connector Putty 3 How to wire the remote controller (1) T urn OFF the power [...]

4 Fig. 9 Fig. 10 Fig. 1 1 ON/OFF operation button 1 HR.TIMER button NIGHT SETBACK button ACL (Reset) button SENSOR button OPERA TION lamp TIMER lamp HIGH POWER lamp REMOTE CONTROL receiver OPERA TION button How to T est Run the Air Conditioner After turning on the power of the air conditioner , use the remote controller and follow the steps below t[...]

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DC1111-0[...]