Panasonic CS-CZ9SKE Service Manual Download Page 92

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17.5.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry)

Error Code will not display (no Timer LED blinking) but store in EEPROM

Malfunction Decision Conditions



Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C)

Malfunction Caused



Air short circuit at indoor unit



Clogged indoor unit air filter



Dust accumulation on the indoor unit heat exchanger



2/3 way valve closed



Faulty indoor unit fan motor



Refrigerant

shortage

(refrigerant leakage)



Clogged expansion valve or strainer



Faulty indoor pipe temperature sensor



Faulty indoor unit PCB

Troubleshooting

When abnormality indication starts again

For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.

Provide sufficient air passage

Clean the air filter

Clean the indoor unit heat exchanger

Open the 2/3 way valve.

Replace the indoor unit fan motor and/or
indoor unit PCB.

Reclaim and recharge with correct amount of
refrigerant.

Replace the indoor pipe temperature sensor

Replace the indoor unit PCB

Check the air passage

Is there any short circuit?

Check the indoor unit air filter

Is the air filter dirty?

Check the dust accumulation on the indoor unit heat
exchanger

Check for gas leakage. Is Oil oozing out from the 2/3 way
valve?

Is the indoor unit heat exchanger dirty?

Check if 2/3 way valve is closed?

Check if indoor fan motor operates normally?

Check if expansion valve or strainer clogged (ice formed)?

Check the indoor pipe temperature sensor

Does it conform to the sensor characteristic chart?

Repair the pipe flare or union nuts
Reclaim and recharge refrigerant

YES

Caution

Summary of Contents for CS-CZ9SKE

Page 1: ...f this product PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential dange...

Page 2: ... 2 Indoor Fan Motor Operation 56 14 3 Outdoor Fan Motor Operation 57 14 4 Airflow Direction 57 14 5 Timer Control 59 14 6 Random Auto Restart Control 59 14 7 Indication Panel 59 14 8 Quiet Operation Cooling Mode Cooling Area of Dry Mode 60 14 9 Quiet Operation Heating 60 14 10 Powerful Mode Operation 60 14 11 8 15 C Heat Operation 61 15 Protection Control 62 15 1 Protection Control for All Operati...

Page 3: ...outdoor unit near handrail of veranda When installing air conditioner unit on veranda of a high rise building child may climb up to outdoor unit and cross over the handrail causing an accident 3 Do not use unspecified cord modified cord joint cord or extension cord for power supply cord Do not share the single outlet with other electrical appliances Poor contact poor insulation or over current wil...

Page 4: ... installed with Earth Leakage Circuit Breaker ELCB or Residual Current Device RCD with sensitivity of 30mA at 0 1 sec or less Otherwise it may cause electrical shock and fire in case of equipment breakdown or insulation breakdown 23 During installation install the refrigerant piping properly before running the compressor Operation of compressor without fixing refrigeration piping and valves at ope...

Page 5: ...it breaker for the permanent connection Use an approved 16A 1 0 1 5HP circuit breaker for the permanent connection It must be a double pole switch with a minimum 3 0 mm contact gap 9 Installation or servicing work It may need two people to carry out the installation or servicing work 10 Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 ...

Page 6: ...rvice personnel Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry accredited assessment authority which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification Servicing shall only be performed as recommended by the equipment manufa...

Page 7: ...ing the system That there is continuity of earth bonding At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assistance If a fault exists that could compromise safety then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with If the fault cannot be corrected immed...

Page 8: ...Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them Cylinders shall be kept upright Ensure that the refrigeration system is earthed prior to charging the system with refrigerant Label the system when charging is complete if not already Extreme care shall be taken not to over fill the refrigeration system Prior to recharging the system it shall be pr...

Page 9: ...with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants In addition a set of calibrated weighing scales shall be available and in good working order Hoses shall be complete with leak free disconnect couplings and in good condition Before using the recovery machine check that it is in satisfactory working order has been pr...

Page 10: ... 22 Power Level dB 55 41 38 58 44 38 Outdoor Noise dB A H L Q Lo 46 43 48 45 Power Level dB 61 63 Heating Capacity kW 0 85 3 40 5 20 0 85 4 00 6 70 BTU h 2900 11600 17700 2900 13600 22800 kcal h 730 2920 4470 730 3440 5760 Running Current A 3 40 4 50 Input Power W 180 730 1 45k 180 980 2 00k COP W W 4 72 4 66 3 59 4 72 4 08 3 35 BTU hW 16 11 15 89 12 21 16 11 13 88 11 40 kcal hW 4 06 4 00 3 08 4 0...

Page 11: ...0 4 2 Indoor Airflow QLo Cool m 3 min ft 3 min 5 4 190 5 4 190 Heat m 3 min ft 3 min 5 8 205 5 7 200 Lo Cool m 3 min ft 3 min 6 2 220 7 1 250 Heat m 3 min ft 3 min 7 6 270 9 3 330 Me Cool m 3 min ft 3 min 8 6 305 9 6 340 Heat m 3 min ft 3 min 9 7 340 11 1 390 Hi Cool m 3 min ft 3 min 11 1 390 12 0 425 Heat m 3 min ft 3 min 11 8 415 12 8 455 SHi Cool m 3 min ft 3 min 11 6 410 12 5 440 Heat m 3 min ...

Page 12: ... 15 Minimum C 8 8 Outdoor Operation Range Cooling Maximum C 43 26 43 26 Minimum C 16 11 16 11 Heating Maximum C 24 18 24 18 Minimum C 20 20 8 15 C Heat Maximum C Minimum C 20 20 1 Cooling capacities are based on indoor temperature of 27 C Dry Bulb 80 6 F Dry Bulb 19 0 C Wet Bulb 66 2 F Wet Bulb and outdoor air temperature of 35 C Dry Bulb 95 F Dry Bulb 24 C Wet Bulb 75 2 F Wet Bulb 2 Heating capac...

Page 13: ...operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor Operation Improvement o Quiet mode to reduce the indoor unit operation sound o Powerful mode to reach the desired room temperature quickly o 8 15 C HEAT operation is designed to provide heating at low temperature settings It is used in houses unoccupied during winter for the purpose of pro...

Page 14: ...rs Air Filters Front panel Remote Control receiver Vertical Airflow direction louver Do not adjust by hand Horizontal Airflow direction louver Manually adjustable INDICATOR 5 2 Outdoor Unit 5 3 Remote Control Airflow direction selection Fan speed selection Transmitter Operation mode 8 15 C Heat operation OFF ON Powerful Quiet operation Temperature setting Remote control display Timer setting Check...

Page 15: ...ER 496 6 128 228 228 128 Right piping hole Left piping hole Installation plate Indoor unit external dimensions line 425 425 144 5 59 87 64 Remote Control Holder Remote Control Gas side Liquid side Relative position between the indoor unit and the installation plate Front View Right piping hole 199 290 60 41 Side View Air intake direction Air outlet direction Left piping hole Side View 22 199 99 60...

Page 16: ...de View Side View Anchor Bolt Pitch 330 540 Space necessary for installation 100mm 100mm 100mm Unit mm 22 124 53 4 330 622 167 97 32 540 160 824 68 5 37 299 3 way valve at Gas side Low Pressure 2 way valve at Liquid side High Pressure 69 61 23 ...

Page 17: ... TEMP SENSOR INTAKE TEMP SENSOR COMP TEMP SENSOR PIPE TEMP SENSOR PIPE TEMP SENSOR LIQUID SIDE 2 WAY VALVE 3 WAY VALVE GAS SIDE COOLING HEAT EXCHANGER EVAPORATOR HEATING COMPRESSOR 4 WAYS VALVE HEAT EXCHANGER CONDENSER MUFFLER MUFFLER STRAINER EXPANSION VALVE ...

Page 18: ...ram MS 3 MS 3 M IC19 FUSE101 FUSE103 FUSE 301 TEMPERATURE FUSE FUSE104 REACTOR C103 CT101 PTC NTC TH1 U PTC1 RY PWR RY AC 4 WAYS VALVE U 1 2 L N SINGLE PHASE POWER SUPPLY INDOOR UNIT OUTDOOR UNIT NOISE FILTER SC SC 3 ...

Page 19: ... DISPLAY RECEIVER 1 7 1 7 W W W W W W W REMOTE CONTROLLER REMARKS B BLUE P PINK BR BROWN O ORANGE BL BLACK Y YELLOW W WHITE G GREEN R RED Y G YELLOW GREEN SW01 ELECTRONIC CONTROLLER MAIN Y B W BL R FAN MOTOR CN FM WHT 7 4 1 AC303 WHT AC304 RED G301 GRN AC306 BL FUSE301 T3 15A L250V M Y G EVAPORATOR GROUNDING TERMINAL TEMP FUSE 102 C 4 5A R W G BL TERMINAL BOARD TO OUTDOOR UNIT 1 2 3 t t COMMUNICAT...

Page 20: ...YLW Q1 U V W P N SWITCHING POWER SUPPLY CIRCUIT COMMUNICATION CIRCUIT NOISE FILTER CIRCUIT PFC CIRCUIT RECTIFICATION CIRCUIT RECTIFICATION CIRCUIT AC WHT WHT CN MTR1 WHT CN MTR2 WHT IC19 FG1 GRN FG2 GRN HT2 BLU ACN2 BLU AC BLK BLK DATA RED GRY RAT2 GRY GRY RAT1 GRY REACTOR 10 14 16 FUSE 103 20A 250V FUSE 104 T3 15A L250V FUSE 101 T3 15A L250V W U V ELECTRONIC CONTROLLER 1 1 3 5 5 GRN GRN FAN MOTOR...

Page 21: ...E 102 C 4 5A R W G BL TERMINAL BOARD TO OUTDOOR UNIT 1 2 3 t t COMMUNICATION CIRCUIT NOISE FILTER CIRCUIT RECTIFICATION CIRCUIT 70 60 50 Resistance kΩ Temperature ºC Sensor Thermistor Characteristics 40 30 20 10 10 0 10 20 30 40 50 0 Pipe Temp Sensor Intake Air Temp Sensor 1 1 2 2 12V 1 2 3 4 16 15 14 13 IC03 IC03 IC03 IC03 5V 5V 12V R90 10K R82 10K L6 B 06 RTF 50 L5 B 06 RTF 50 C57 0 1μ 16V B1 C5...

Page 22: ...ICATION CIRCUIT NOISE FILTER CIRCUIT PFC CIRCUIT RECTIFICATION CIRCUIT RECTIFICATION CIRCUIT AC WHT WHT CN MTR1 WHT CN MTR2 WHT IC19 FG1 GRN FG2 GRN HT2 BLU ACN2 BLU AC BLK BLK DATA RED GRY RAT2 GRY GRY RAT1 GRY REACTOR 10 14 16 FUSE 103 20A 250V FUSE 104 T3 15A L250V FUSE 101 T3 15A L250V W U V ELECTRONIC CONTROLLER 1 1 3 5 5 GRN GRN FAN MOTOR MS 3 BLU BLU 1 3 BASE PAN HEATER BLK WHT RED WHT BLK ...

Page 23: ...23 11 Printed Circuit Board 11 1 Indoor Unit 11 1 1 Main Printed Circuit Board CN FM CN STM1 CN TH CN CNT CN DISP CN RMT AC 306 AC303 G301 AC304 JP1 Random Auto Restart enable disable ...

Page 24: ...24 11 1 2 Indicator Receiver Printed Circuit Board CN DISP LED202 LED201 LED203 ...

Page 25: ...25 11 2 Outdoor Unit 11 2 1 Main Printed Circuit Board CN HOT CN STM CN TH1 CN MTR2 CN MTR1 CN TANK AC BLK FG1 DATA FG2 AC WHT RAT1 RAT2 POWER TRANSISTOR IPM CURRENT TRANSFORMER CT ACN2 HT2 ...

Page 26: ...4 5 10 3 20 10 7 5 0 87 CZ12 1 5HP 10 3 20 10 7 5 0 93 Example For CZ9 If the unit is installed at 10 m distance the quantity of additional refrigerant should be 25 g 10 7 5 m x 10 g m 25 g Amin M 2 5 x LFL 5 4 x h0 2 Amin Required minimum room area in m2 M Refrigerant charge amount in appliance in kg LFL Lower flammable limit 0 306 kg m3 h0 Installation height of the appliance 1 8 m for wall moun...

Page 27: ...ast 5 screws If mounting the unit on the concrete wall consider using anchor bolts o Always mount the installation plate horizontally by aligning the marking off line with the thread and using a level gauge 2 Drill the piping plate hole with ø70 mm hole core drill o Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the hole ...

Page 28: ... in indoor outdoor unit installation Install the Indoor Unit Secure the Indoor Unit Insulate and finish the piping Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 In case of the cover is cut keep the cover at the rear of chassis as shown in the illustration for future reinstallation Left right and 2 bottom covers for piping How to keep the cover Hook the indoor unit onto the upper portion ...

Page 29: ...d outside connection cable can be connected without removing the front grille 2 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1 5 mm2 flexible cord type designation 60245 IEC 57 or heavier cord Do not use joint connection cable Replace the wire if the existing wire from concealed wiring or otherwise is too short Allowable connection cable leng...

Page 30: ...connection terminal board Do not joint wires OR OR Conductor fully inserted Conductor over inserted Conductor not fully inserted ACCEPT PROHIBITED PROHIBITED 12 2 5 Cutting and Flaring the Piping 1 Please cut using pipe cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs is not removed gas leakage may be caused Turn the piping end down to avoid the metal powder entering th...

Page 31: ... in specified torque as stated in the table Torque wrench Spanner or Wrench For connection joint location at inside building Decide the length Cut and remove the tube connectors at indoor copper pipings both gas and liquid piping by using pipe cutter Remove burrs from cut edge Use pipe expander to expand the end of long piping Align the center of piping and braze the piping joints Indoor copper pi...

Page 32: ...ly ten minutes 4 Close the Low side valve of the charging set and turn off the vacuum pump Make sure that the needle in the gauge does not move after approximately five minutes Note BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE 5 Disconnect the charging hose from the vacuum pump and from the service port of the 3 way valve 6 Tighten the service port caps of the 3 way val...

Page 33: ... Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below 3 2 1 Colour of wires connection cable Terminals on the outdoor unit Terminals on the indoor unit L N 1 2 3 Power supply cord Terminals on the isolating devices Disconnecting means L N 5 Secure the power supply cord and connection cable onto the control board with the holder 6 At...

Page 34: ...e front grille Pour a glass of water into the drain tray styrofoam Ensure that water flows out from drain hose of the indoor unit Drain tray styrofoam 12 3 8 Evaluation of the Performance 1 Operate the unit at cooling heating operation mode for fifteen minutes or more 2 Measure the temperature of the intake and discharge air 3 Ensure the difference between the intake temperature and the discharge ...

Page 35: ...In 2010 the regulations of American Society of Heating Refrigerating and Air Conditioning Engineers in the United States ANSI ASHRAE34 was issued adopting the grades for refrigerants which are difficult to inflame due to their slow burning rates and as a result have smaller damages in cases of fire The burning rate of R32 is lower by 10cm per second and safety standardization for various usage is ...

Page 36: ...e of R410A it is necessary to do installation and service using high pressure tools and components Table 2 Saturated vapor pressure comparison table Unit MPa Temperature Refrigerant R32 R410A R22 20 0 30 0 30 0 14 0 0 71 0 70 0 40 20 1 37 1 35 0 81 40 2 38 2 32 1 43 60 3 84 3 73 2 33 65 4 29 4 17 2 60 Reference Thermal properties table of Japan Society of Refrigerating and Air Conditioning Enginee...

Page 37: ...tools such as screw drivers metal saws electric drills long nose pliers hole core drills ø70 or ø65 linen tape levels temperature gauges clamp meters electric knives nippers pipe cutters reamers or scrapers spring benders diameters 1 4 3 8 1 2 5 8 monkey wrenches fixing wrenches 17 or 12 mm feeler gauges hexagon wrenches 4 mm testers megohm testers etc Tools used for services Works R32 R410A R22 I...

Page 38: ...izes R32 common R410A R22 Port sizes 1 2 UNF20 7 16 UNF20 5 Charging hoses The pressure resistance of charge hoses is increased At the same time the material is changed to HFC resistant and the size of each manifold adopter is changed as the port size of manifold gauge itself Further some hoses are with anti gas pressure backflow valves placed near the adopters hoses with the valves recommended Ma...

Page 39: ...ame time the digital scale for refrigerant charging is strengthened by receiving the weight of the refrigerant cylinders with four pillars at the corners The connection ports of charging hoses have two separate ports for R22 7 16 UNF20 and R32 R410A 1 2 UNF20 therefore they can be used for the insertion of the existing refrigerants Digital scale for refrigerant charging 9 Refrigerant cylinders Ref...

Page 40: ...or each HCF type can be used Knowledge for the common usage of tools for R410A R32 R410A and R32 machines use different compressor oils If unregulated compressor oil gets mixed into it may cause damage to the machine function Careful pump down will ensure the recovery of compressor oil and it will minimize the remaining amount of the oil in the manifold gauge and charging hose If you only perform ...

Page 41: ...vention of impurity Leakage checking Insertion of refrigerant Dismantling indoor outdoor units Repairing by brazing Evacuation Air purging new installation and relocation for at or more than 15 minutes re charging at or more than 60 minutes Indoor outdoor units and piping Displacing pipes and wires and displacing indoor outdoor units Indoor outdoor units installation and piping and wiring Removal ...

Page 42: ... of moisture and dirt do not get into the pipes and make sure of no refrigerant leakage The procedure of flaring and precautions a Cutting of pipes use pipe cutter and cut the pipe slowly not to de shape the pipe b Removal of burrs on the edge of pipe reamer or scraper If the condition of pipe edge after the deburring is no good or if burrs attaches on the flaring it may cause refrigerant leakage ...

Page 43: ...nd leave it for 1 2 minutes Then remove the connection side of the charging hose of vacuum pump adopter after checking the needle of manifold gauge does not turn back 4 Open the stem of 2 way valve to 90 in anti clock wise and close the 2 way valve after 10 seconds and perform gas leakage test 5 Remove the charge hose from the service port of 3 way valve and open the stems of 2 way and 3 way valve...

Page 44: ...ly loosen the charging hose in discharging side of recovery device and perform air purge the recovery cylinder needs slight inside pressure 7 Insert electric plug of recovery device into electrical outlet the fan operation starts 8 Turn the valve 1 and 2 of recovery device to pressure equalization point 9 After a few seconds turn back the valve 1 and 2 to the original position 10 Turn the switch o...

Page 45: ...tach and tighten the caps of two way and three way valves with torque wrench 6 Remove the connecting pipes liquid side and gas side b Removal of indoor and outdoor units 1 Remove the connecting pipes and wires between the indoor and outdoor units 2 Attach capping flare nuts on the edges of the pipes connecting the indoor and outdoor units in order to prevent dust and moisture get into the pipes 3 ...

Page 46: ...ures below 6 Remove the charging hose red of the manifold gauge from the vacuum pump adopter 7 After adjusting the digital scale to zero open the cylinder valve and the valve Lo of the manifold gauge and insert the refrigerant 8 If it is not possible to insert the refrigerant at regulated amount at once operate the cooling mode and gradually insert the refrigerant recommended amount approx 150 g 1...

Page 47: ...side check and make sure no refrigerant is contained in the air be careful with vaporized refrigerant Furthermore protect the compressor terminal with metal plates and heat but use wet clothes to cool down releasing the heat the expansion valves and four way valves prevent destruction of parts In brazing it is important to pour the brazing material without melting the base metal based on capillary...

Page 48: ...rm the provision of gas 1 Slightly open the propane valve of the torch and make sure the gas comes out from the torch crater and then close the propane valve 2 Slightly open the oxygen valve of the torch and make sure the gas comes out from the torch crater and then close the oxygen valve Check there is no gas leakage around the hose connection 13 7 4 Adjustment of flame 1 Slightly open the propan...

Page 49: ...r flame Blue color Oxidizing Flame Oxygen is more compared to the neutral flame Although the flame size is small this has the highest flame heat However due to the excessive oxygen contained in the flame the brazing point gets oxidized This flame may cause holes due to the high heat The pipe may get melt White core flame Outer flame Blue orange color 13 7 6 Closing the flame In case of short break...

Page 50: ...resistance in stainless steel based brazing suitable for brazing tungsten carbide aluminum bronze and copper BCuP BCuP 2 remain 6 8 7 5 approx 710 approx 785 690 815 21 24 5 Cu Good liquidity suitable for brazing copper tube BCuP 3 4 8 5 2 remain 5 8 6 7 approx 645 approx 815 720 815 21 24 5 Cu Suitable for brazing when the joint spacing is not constant BCuP 5 14 5 15 5 remain 4 8 5 3 approx 645 a...

Page 51: ...n Further by bending the brazing portion of dryer side of the capillary tube at 15 mm from the tube top to the angle of about 120 you can prevent the damage of dryer inside and the clogging of brazing material caused by the excessive insertion of capillary tube Gap 0 025 0 05 mm Insert diameter 10 25 mm Inner diameter ø6 45 Outer diameter ø6 35 Brazing material Runny Brazing material Hard to flow ...

Page 52: ... capillary tube and dryer etc caution has to be taken to apply the flame to the dryer side thick pipe side in order to prevent burn out by the heat 4 When brazing the compressor connection pipes suction and discharge remove the sound insulation plate and the fan and place the compressor stand vertically to prevent the leakage of compressor refrigerating machine oil and apply the flame from the com...

Page 53: ...an obstructing heat suction 3 Is the setting temperature on the remote controller correct is the setting temperature set at lower higher than the room temperature 13 8 2 Understanding and verification of refrigerant cycle Heat exchanger Heat exchanger Compressor COMP 4 way valve Condenser COND Expansion valve Liquid side 2 way valve Gas side 3 way valve High temp High pressure Air Mid temp High pr...

Page 54: ...ure Excess insertion of refrigerant Clogged capillary expansion valve malfunction Heat releasing obstruction Clog by moisture Dirty condenser attachment of impurity Lack of refrigerant gas Compressor malfunction Operation electric current Excess insertion of refrigerant Lack of refrigerant gas Heat releasing obstruction Compressor malfunction Dirty condenser impurity Mixture of air Insufficient ev...

Page 55: ...tting temperature and it is updated continuously whenever the electrical power is supplied to the unit 14 1 2 Cooling Operation 14 1 2 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature 1 5 C continue for 3 minutes When compressor is OFF Thermostat OFF and AUTO FAN is set the fan will stop periodically Compressor is ON after waiting for 3 minutes if the...

Page 56: ...nwards o If indoor intake temperature remote control setting temperature 3 C if previous operate in DRY mode then continue in DRY mode otherwise COOL mode is decided o If 2 C indoor intake temperature remote control setting temperature 3 C maintain with previous mode o If indoor intake temperature remote control setting temperature 2 C HEAT mode is decided 14 1 6 Fan Operation Fan Operation is use...

Page 57: ... on if fan motor feedback 2550 rpm or 50 rpm continue for 10 seconds then fan motor error counter increase fan motor is then stop and restart If the fan motor counter becomes 7 times then H19 fan motor error is detected Operation stops and cannot on back 14 3 Outdoor Fan Motor Operation Outdoor fan motor is operated with one fan speed only It starts when compressor starts operation and it stops 30...

Page 58: ...eating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below It does not swing during fan motor stop When the air conditioner is stopped using remote control the vane will shift to close position 2 Manual vertical airflow direction can be set using remote control the angles of the vane are as stated above and the positions of the vane are as Figure...

Page 59: ... intake air temperature o C Outdoor air temperature o C 15 0 5 Heating o C 30 min 25 min 35 min 5 14 5 2 OFF Timer Control OFF timer 1 and OFF timer 2 can be set using remote control the unit with timer set will stop operate at set time 14 6 Random Auto Restart Control When the power supply is cut off during the operation of air conditioner the compressor will re operate within three to four minut...

Page 60: ...vide quiet heating operation compare to normal operation B Control condition a Quiet operation start condition o When POWERFUL QUIET button at remote control is pressed twice o QUIET will be shown on remote control display b Quiet operation stop condition 1 When one of the following conditions is satisfied quiet operation stops a POWERFUL QUIET button is pressed again b Stop by OFF ON switch c Tim...

Page 61: ...fter battery reset default condition set temperature always start with 13 0 C OFF timer activates OFF timer activates OFF timer activates ON timer activates OR ON timer activates OR ON timer activates OR OR OR OR OR OR 1 Summer house set temperature follows previously fixed set temperature 8 0 C 15 0 C Transmit 8 15 C HEAT Go back to previous LCD setting tranmit code Go back to previous LCD settin...

Page 62: ...3 7 01 14 83 Cooling Soft Dry B 3 95 6 50 Cooling Soft Dry C 3 95 6 50 Heating 6 02 8 69 4 The first 30 minutes of cooling operation A will be applied Outdoor air temperature 39 C 38 C B C A 40 C 39 C 15 1 3 IPM Power transistor Prevention Control Overheating Prevention Control 1 When the IPM temperature rises to 120 C compressor operation will stop immediately 2 Compressor operation restarts afte...

Page 63: ...ring Cooling and Soft Dry operations Indoor suction temperature indoor piping temperature is below 4 C o During Heating operations Indoor piping temperature indoor suction is under 5 C Control contents o Compressor stops and restart after 3 minutes o If the conditions above happen 2 times within 20 minutes the unit will Stop operation Timer LED blinks and F91 indicated 15 1 6 Low Frequency Protect...

Page 64: ...hanger is higher than 5 C At the same time indoor fan speed will be higher than during its normal operation If indoor heat exchanger temperature is higher than 5 C for 5 minutes the fan speed will return to its normal operation 15 2 4 Freeze Prevention Control 2 Control start conditions o During Cooling operation and soft dry operation During thermo OFF condition indoor intake temperature is less ...

Page 65: ...rature Control Compressor will operate at limited freq if indoor intake air temperature is 30 C or above 15 3 2 Outdoor Air Temperature Control The Max current value is regulated when the outdoor air temperature rise above 14 C in order to avoid compressor overloading 15 3 3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperatu...

Page 66: ...ration Forced Heating Operation Press AC RESET at remote control Press AC RESET at remote control Press AC RESET then any key at remote control Remote Control Number Switch Mode Remote Control Receiving Sound OFF ON 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF ON button is pressed continuously for more than 11 seconds 3 beep sounds wil...

Page 67: ...emperature range for COOL DRY HEAT mode o Press Set button by using pointer o Press TEMP increment or decrement button to choose No 3 o Press Timer increment or decrement button to select desired temperature low limit of set temperature for COOL DRY mode o Press Timer Set button to confirm low limit selection o Press TEMP increment or decrement button to choose No 4 o Press Timer decrement or incr...

Page 68: ...ol Enable Press SW to enter customer zone press SW s to choose function 10 1 Press SW special setting is immediately cancelled and normal mode starts 2 If no SW is pressed for 30secs then special setting mode is cancelled and normal mode starts 3 Under this function only SW s are effective Note By default is enable ...

Page 69: ...ement 16 2 2 RESET RC To clear and restore the remote control setting to factory default o Press once to clear the memory 16 2 3 RESET AC To restore the unit s setting to factory default o Press once to restore the unit s setting 16 2 4 TIMER To change indoor unit indicator s LED intensity o Press continuously for 5 seconds 16 2 5 TIMER To change remote control display from Degree Celsius C to Deg...

Page 70: ...rature 35 C at cooling mode and 7 C at heating mode Compressor operates at rated frequency Difference in the intake and outlet air temperatures More than 8 C 15 minutes after an operation is started at cooling mode Above 14 C 15 minutes after an operation is started at heating mode Less than 8 C at the cooling mode Less than 14 C at the heating mode Higher than specified Lower than specified Cooli...

Page 71: ...Electric current during operation Low Pressure High Pressure Electric current during operation Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression Carry out the measurements of pressure electric current and temperature fifteen minutes after an operation is started ...

Page 72: ...ower on 2 Press the CHECK button on the remote controller continuously for 5 seconds 3 will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote controller The code H00 no abnormality will be displayed and signal will be transmitted to the main unit The power LED lights up I...

Page 73: ...ality Port is ON for 10s during ion device off ion device PCB H27 Outdoor air temperature sensor abnormality Continuous for 5s Outdoor air temperature sensor open or short circuit Outdoor air temperature sensor lead wire and connector H28 Outdoor heat exchanger temperature sensor 1 abnormality Continuous for 5s Outdoor heat exchanger temperature sensor 1 open or short circuit Outdoor heat exchange...

Page 74: ...zing abnormality 3 times happen within 40 minutes Wrong wiring and connecting pipe expansion valve leakage indoor heat exchanger sensor open circuit Check indoor outdoor connection wire and pipe Indoor heat exchanger sensor lead wire and connector Expansion valve lead wire and connector F90 Power factor correction PFC circuit protection 4 times happen within 10 minutes Power factor correction circ...

Page 75: ...240V AC power supply abnormal fluctuation Defect in communication circuitry of outdoor unit PCB Replace the PCB Improper connection at terminals indoor outdoor Check indoor outdoor connecting cable Measure the DC voltage at terminal 2 3 communication terminals of outdoor unit terminal board Is the measured DC voltage fluctuate between 10 70V Improper connection at terminals indoor outdoor Check in...

Page 76: ...are interconnected Malfunction Caused Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error due to wrong wiring Indoor outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units Troubleshooting ...

Page 77: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 78: ...n Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 79: ...ion Conditions An input current detected by Current Transformer CT is below threshold value when the compressor is operating at certain frequency value for 3 minutes Malfunction Caused Lack of gas Broken CT current transformer Broken Outdoor PCB Troubleshooting ...

Page 80: ...etermine abnormal fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty indoor unit PCB Troubleshooting ...

Page 81: ... Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 82: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 83: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 84: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 85: ...nction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 86: ...e Troubleshooting When abnormality indication starts again Check indoor and outdoor PCB part number and compare if they matched part list For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Change for the specified indoor or outdoor unit PCB Check indoor and outdoor units model number Is the indoor and outdoor unit model number m...

Page 87: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 88: ...Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 89: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 90: ...power supply and rotate fan by hand Does it rotate CN MTR2 WHT IC19 3 5 1 10 14 16 W U V FAN MOTOR MS CN MTR1 PCB BOARD 5 4 3 2 1 C173 5V R105 1k C176 0 01μ 50V G5 R111 1k C177 0 01μ 50V G5 R120 1k C175 0 01μ 50V G5 G5 YES NO YES Turn off power supply and disconnect fan motor CN MRT2 Check resistance of the motor Measure at fan motor connector CN MRT1 1 2 1 3 2 3 Replace outdoor PCB NO Replace fan...

Page 91: ...h pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation Phenomena unit is stopping and re starting very often in heating mode Malfunction Caused Indoor heat exchanger thermistor Clogged air filter or heat exchanger Over bent pipe liquid side Troubleshooting ...

Page 92: ...onnect the component Provide sufficient air passage Clean the air filter Clean the indoor unit heat exchanger Open the 2 3 way valve Replace the indoor unit fan motor and or indoor unit PCB Reclaim and recharge with correct amount of refrigerant Replace the indoor pipe temperature sensor Replace the indoor unit PCB Check the air passage Is there any short circuit Check the indoor unit air filter I...

Page 93: ...cold during heating except deice or when indoor heat exchanger is hot during cooling and compressor operating the 4 way valve is detected as malfunction Malfunction Caused Indoor heat exchanger pipe thermistor 4 way valve malfunction Troubleshooting Check gas side pipe for hot gas flow in cooling mode ...

Page 94: ...rature and indoor pipe temperature is above 10 C or indoor pipe temperature is below 1 0 C Remark When the indoor standby unit is freezing the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit s Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve Troubleshooting ...

Page 95: ...startup and operation of cooling and heating when Power Factor Correction PFC protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors When DC voltage detected is LOW transistor switching will turn ON by controller to push up the DC level When DC voltage detected is HIGH 391Vdc 425Vdc active LOW signal will send by the controller to turn OFF relay RY...

Page 96: ...rigeration Cycle Abnormality Malfunction Decision Conditions The input current is low while the compressor is running at higher than the setting frequency Malfunction Caused Lack of gas 3 way valve close Troubleshooting ...

Page 97: ...onnection at outdoor PCB and compressor terminal Is the connector connection normal Disconnect the harnesses U V and W from the compressor terminal Is the blinking of the 6 LEDs in same sequence condition From the disconnected harnesses U V and W correct them to the inverter checker Turn ON the power and operate the system Check the inverter checker 6 LEDs blinking condition For safety reason and ...

Page 98: ... the outdoor unit heat exchanger thermistor Malfunction Caused Outdoor heat exchanger temperature rise due to short circuit of hot discharge air flow Outdoor heat exchanger temperature rise due to defective of outdoor fan motor Outdoor heat exchange temperature rise due to defective outdoor heat exchanger thermistor Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB Troub...

Page 99: ...vated o Heat Sink Overheating During operation of cooling and heating when heat sink temperature data 90 C is detected by the heat sink temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow IPM overheats due to defective of outdoor fan motor IPM overheats due to defective of internal circuitry of IPM IPM overheats due to defective IPM temperature sensor...

Page 100: ...e sensor Does it conform to the sensor characteristic chart 2 3 way valve closed Check for gas leakage Oil oozing out from the 2 3 way valve Refrigerant cycle abnormality error again Check if expansion valve or strainer clogged ice formed Reclaim and recharge for a specified amount of fresh refrigerant YES YES NO NO NO NO Open the 2 3 way valve YES YES YES For safety reason and to prevent componen...

Page 101: ...ting When F98 indication happens Get restarted and measure the input current NO Replace the outdoor unit PCB Turn off power supply Check the main circuit electrolytic capacitor Input current limit Normal Check refrigerant amount Excess refrigerant Reclaim and recharge with correct amount of refrigerant YES YES YES NO NO NO Repair the pipe flare or union nuts Reclaim and recharge refrigerant Replac...

Page 102: ...heating when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry Malfunction Caused DC current peak due to compressor failure DC current peak due to defective power transistor s DC current peak due to defective outdoor unit PCB DC current peak due to short circuit Troubleshooting ...

Page 103: ... result in electric shocks 18 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 18 1 1 To Remove Front Grille 2 Remove 2 caps and 2 screws at the bottom of discharge vane 3 Hold both sides of the front grille and remove it by pulling up and toward you gently 1 Lift to open the horizontal vane gently Figure 1 18 1 2 To Remove Electronic Controller 4 Remove the C...

Page 104: ... gently 7 Detach the Earth wire screw terminal wire BL terminal wire RED and earth wire screw Green 5 Remove the screw to dismantle the terminal board complete CN FM CN STM1 CN TH AC303 Figure 3 Figure 4 18 1 3 To Remove Discharge Grille Discharge Grille 11 Then pull the Discharge Grille downward gently to dismantle it 10 Pull out to remove the drain hose behind the discharge grille from the Disch...

Page 105: ...ther then pull out the control board Figure 6 18 1 5 To Remove Cross Flow Fan and Indoor Fan Motor 13 Remove the screw that holds the cross flow fan and the fan motor shaft Figure 7 14 Remove the bearing by pulling it out gently Holdfast 15 Remove the screw from the evaporator Figure 8 ...

Page 106: ...er To reinstall the fan motor adjust the fan motor connector to 45 towards you before fixing control board 17 Remove the cross flow fan from the unit by pulling it to the left and downward Evaporator Figure 9 Cross Flow Fan Reminder To reinstall the cross flow fan please ensure cross flow fan is in line as shown in figure 10 Figure 10 ...

Page 107: ...ller be careful of electrostatic discharge 1 Remove the 5 screws of the Top Panel Fig 1 2 Remove the 8 screws of the Front Panel Fig 2 3 Remove the screw of the Terminal Board Cover 4 Remove the Top Cover of the Control Board by 4 hooks Fig 3 5 Remove the Control Board as follows Fig 4 Fig 5 Fig 6 ...

Page 108: ...1924 303 2527 1785 408 2269 1669 534 20 13 3 1830 1794 180 1742 1707 299 1656 1622 469 15 8 1844 1573 166 2278 1730 410 2032 1618 531 Dry bulb value based on 46 humidity 19 1 2 CS CZ12SKE CU CZ12SKE Indoor C Outdoor DB C DB WB 16 25 35 TC SHC IP TC SHC IP TC SHC IP 27 19 0 3778 2763 521 3550 2628 710 3500 2494 935 22 0 4217 2091 494 3910 1991 694 3436 1825 925 23 15 7 3588 2685 546 3321 2586 722 2...

Page 109: ...1043 2723 1185 2973 1125 3505 1192 4656 1420 Indoor C Outdoor WB C DB 12 TC IP 24 4267 1412 20 4688 1411 16 4987 1413 19 2 2 CS CZ12SKE CU CZ12SKE Indoor C Outdoor WB C DB 20 15 7 2 7 TC IP TC IP TC IP TC IP TC IP 24 2745 1758 3398 1884 3631 1883 4246 1721 5309 1956 20 2850 1632 3528 1744 3848 1813 4374 1682 5695 1960 16 2927 1518 3631 1622 3649 1600 4518 1648 5999 1958 Indoor C Outdoor WB C DB 12...

Page 110: ...lb Unit setting Standard piping length forced cooling at 16 C Hi fan Compressor frequency Rated for cooling operation Piping length 5m Voltage 230V 20 1 1 CS CZ9SKE CU CZ9SKE Outlet Air C Outdoor Air Temperature C Low Pressure MPa Outdoor Air Temperature C Current A Outdoor Air Temperature C 1 50 1 70 1 90 2 10 2 30 2 50 2 70 2 90 15 20 25 30 35 40 45 0 90 0 95 1 00 1 05 1 10 1 15 15 20 25 30 35 4...

Page 111: ...perature C Low Pressure MPa Outdoor Air Temperature C Current A Outdoor Air Temperature C 2 00 2 50 3 00 3 50 4 00 4 50 5 00 5 50 15 20 25 30 35 40 45 50 0 60 0 65 0 70 0 75 15 20 25 30 35 40 45 50 10 00 11 00 12 00 13 00 14 00 15 00 16 00 15 20 25 30 35 40 45 50 ...

Page 112: ...an Compressor frequency Rated for Heating operation Piping length 5m Voltage 230V 20 2 1 CS CZ9SKE CU CZ9SKE Outlet Air C Outdoor Air Temperature C High Pressure MPa Outdoor Air Temperature C Current A Outdoor Air Temperature C 1 20 1 70 2 20 2 70 3 20 3 70 25 20 15 10 5 0 5 10 1 20 1 40 1 60 1 80 2 00 2 20 2 40 2 60 25 20 15 10 5 0 5 10 16 20 24 28 32 36 40 25 20 15 10 5 0 5 10 ...

Page 113: ...door Air Temperature C High Pressure MPa Outdoor Air Temperature C Current A Outdoor Air Temperature C 1 50 2 00 2 50 3 00 3 50 4 00 4 50 5 00 25 20 15 10 5 0 5 10 1 4 1 6 1 8 2 0 2 2 2 4 2 6 25 20 15 10 5 0 5 10 20 24 28 32 36 40 25 20 15 10 5 0 5 10 ...

Page 114: ...U CZ12SKE Cooling Capacity Correction Factor Heating Capacity Correction Factor Pipe Length m Pipe Length m 0 94 0 95 0 96 0 97 0 98 0 99 1 00 1 01 1 02 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 0 90 0 95 1 00 1 05 1 10 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Note The graphs show the factor after added right amount of additional refrigerant ...

Page 115: ...8 19 11 15 13 17 14 10 18 37 1 6 30 32 31 34 35 20 33 3 4 2 5 12 42 I I 43 I I 44 I I 42 40 I I 41 I I 39 O I 7 8 36 38 CWH55025J CWH55051J Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Page 116: ...SSIS 1 CWD933857 21 FULCRUM 1 CWH621164 22 VERTICAL VANE 10 CWE241447 23 CONNECTING BAR 2 CWE261308 25 AIR SWING MOTOR 1 CWA981264 O 27 CAP DRAIN TRAY 1 CWH521259 28 HORIZONTAL VANE COMPLETE 1 CWE24C1496 29 REMOTE CONTROL COMPLETE 1 ACXA75C01820 O 30 FRONT GRILLE COMPLETE 1 ACXE10C01900 O 31 INTAKE GRILLE COMPLETE 1 ACXE22C00220 32 GRILLE DOOR COMPLETE 1 CWE14C1112 33 AIR FILTER 2 CWD001385 O 34 S...

Page 117: ... 18 42 43 24 22 8 37 10 9 17 1 19 20 3 29 27 25 28 2 7 6 4 36 11 30 35 44 12 5 31 48 13 15 45 46 Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Page 118: ... BOARD 1 CWH151274 27 SOUND PROOF MATERIAL 1 CWG302952 28 SOUND PROOF MATERIAL 1 CWG302630 29 SOUND PROOF MATERIAL 1 CWG302745 30 SENSOR CO COMP TEMP 1 CWA50C2894 O 31 CONTROL BOARD COVER TOP 1 CWH131473 32 ELECTRONIC CONTROLLER MAIN 1 ACXA73C08370R ACXA73C08380R O 33 TERMINAL BOARD ASSY 1 CWA28K1110J O 34 CABINET SIDE PLATE CO 1 ACXE04C00550 35 SENSOR CO AIR TEMP AND PIPE TEMP 1 CWA50C3079 O 36 C...

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Panasonic CS-CZ9SKE, Service Manual, Page: 92 / 118

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