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Fujitsu B24LDC, Service Instruction

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Fujitsu B24LDC Service Instruction Download Page 2

CONTENTS

1. SPECIFICATION

AS*B24LDC, AO*S24LDC

...............................................................................................

2. DIMENSIONS

AS*B24LDC, AO*S24LDC...............................................................................................

3. REFRIGERANT SYSTEM DIAGRAM

AS*B24LDC, AO*S24LDC

...............................................................................................

4. CIRCUIT DIAGRAM

AS*B24LDC, AO*S24LDC......

.........................................................................................

5. DESCRIPTION OF EACH CONTROL OPERATION

1. COOLING OPERATION..............................................................................................

3. DRY OPERATION......................................................................................................

2. HEATING OPERATION..............................................................................................

5. INDOOR FAN CONTROL...........................................................................................

4. AUTO CHANGEOVER OPERATION.........................................................................

7. LOUVER CONTROL...................................................................................................

6. OUTDOOR FAN CONTROL.......................................................................................

9. TIMER OPERATION CONTROL................................................................................

8. COMPRESSOR CONTROL........................................................................................

11. TEST OPERATION CONTROL..................................................................................

10. ELECTRONIC EXPANSION VALVE CONTROL........................................................

13. FOUR-WAY VALVE EXTENSION SELECT...............................................................

12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )................................

15. MANUAL AUTO OPERATION ( Indoor unit body operation ).....................................

14. AUTO RESTART........................................................................................................

21. FORCED COOLING OPERATION.............................................................................

17. COIL DRY OPEARTION CONTROL..........................................................................

16. COMPRESSOR PREHEATING..................................................................................

18. DEFROST OPERATION CONTROL..........................................................................

20. VARIOUS PROTECTIONS.........................................................................................

19. OFF DEFROST OPERATION CONTROL..................................................................

01-01

02-01

03-01

04-01

05-01
05-02
05-03
05-04
05-05
05-07
05-08
05-10
05-11
05-13
05-13

05-13
05-13
05-14

05-19

22. COMPRESSOR STOP CONTROL............................................................................. 05-19
23. AIR CLEAN OPERATION........................................................................................... 05-20

05-14
05-14
05-15
05-17
05-18

05-13

6. REFRIGERANT CAUTION -R410A-

1. R410A TOOLS............................................................................................................

3. PRECAUTION FOR SERVICING...............................................................................

2. PRECAUTION FOR INSTALLATION.........................................................................

5. DEFFERENCE FROM CONVENTIONAL MODEL(R22) AND PRECAUTIONS........

4. NEW REFRIGERANT R410A.....................................................................................

06-01
06-02
06-04
06-05
06-08

Summary of Contents for B24LDC

Page 1: ...TEDtype Models Indoor unit Outdoor unit AS B24LDC AO S24LDC INVERTER SERVICE INSTRUCTION R410A The model that describes in the text includes the following model Description model Included model AS B24LDC AO S24LDC AS B24LDC AO S24LDC AO S24LDL ...

Page 2: ...EVENT TO RESTART FOR 3 MINUTES 3 MINUTES ST 15 MANUAL AUTO OPERATION Indoor unit body operation 14 AUTO RESTART 21 FORCED COOLING OPERATION 17 COIL DRY OPEARTION CONTROL 16 COMPRESSOR PREHEATING 18 DEFROST OPERATION CONTROL 20 VARIOUS PROTECTIONS 19 OFF DEFROST OPERATION CONTROL 01 01 02 01 03 01 04 01 05 01 05 02 05 03 05 04 05 05 05 07 05 08 05 10 05 11 05 13 05 13 05 13 05 13 05 14 05 19 22 COM...

Page 3: ...IT AND OUTDOOR UNIT 3 THERMISTOR RESISTANCE VALUES 4 CAPACITY INPUT DATA 9 REPLACEMENT PARTS 10 INSTALLATION MANUAL 4 SELF DIAGNOSIS FUNCTION AND CHECKING POINTS 5 SERIAL SIGNAL DIAGNOSIS 6 IPM PROTECTION 8 TROUBLE SHOOTING OF REFRIGERANT CYCLE 07 01 07 02 07 03 07 09 07 10 7 ACTIVE FILTER FAILURE 07 11 08 01 08 04 2 OUTDOOR UNIT PRESSURE VALUE AND TOTAL ELECTRIC CURRENT CURVE 08 02 08 06 09 01 09...

Page 4: ...1 SPECIFICATIONS R410A WALL MOUNTED type INVERTER ...

Page 5: ...UNIT STARTING CURRENT MAX PRESSURE HIGH SIDE LOW SIDE PERMISSIBLE OUTDOOR TEMPERATURE COOLING HEATING Ph Hz V kW Btu h kW kW kW Btu h W A A L hr Pt h dB dB dB dB dB kW Btu h kW kW kW Btu h W A A dB dB dB dB dB W m3 h cfm m3 h cfm A kPa kPa F C F C COOLING PERFORMANCE HEATING PERFORMANCE OTHER INDICATION AS B24LDC AO S24LDC 1 50 230 7 10 0 9 8 0 24 200 3 100 27 300 2 21 0 11 2 62 3 21 11 0 9 7 99 1...

Page 6: ...R UNIT OUTDOOR UNIT KIND OF REFRIGERANT AMOUNT OF CHARGING WEIGHT OTHER INDICATION AS B24LDC AO S24LDC Flare 6 35 1 4 15 88 5 8 7 5 25 30 98 15 49 20 3 16 20 66 4 670 26 3 8 14 31 44 97 18 40 48 106 320 12 5 8 998 39 1 4 228 9 578 22 3 4 790 31 1 8 315 12 3 8 319 12 1 2 1 090 42 7 8 429 16 7 8 648 25 1 2 910 35 7 8 380 15 R410A 1 60 3 1 2 HEIGHT HEIGHT WIDTH DEPTH WIDTH DEPTH PACKAGE DIMENSIONS IN...

Page 7: ...2 DIMENSIONS R410A WALL MOUNTED type INVERTER ...

Page 8: ...O N S Models AS B24LDC AO S24LDC 02 01 315 12 3 8 66 2 5 8 790 31 1 8 540 21 1 4 508 20 20 125 4 7 8 320 12 5 8 48 1 7 8 347 13 5 8 578 22 3 4 10 3 8 Unit mm inch OUTDOOR UNIT INDOOR UNIT 998 39 1 4 228 9 320 12 5 8 ...

Page 9: ...3 REFRIGERANT SYSTEM DIAGRAM R410A WALL MOUNTED type INVERTER ...

Page 10: ...S24LDC 03 01 2 Way valve Strainer Strainer Strainer 3 Way valve Muffler 4 Way valve Expansion valve Heat exchanger INDOOR Heat exchanger OUTDOOR Sub accumulator Compressor Cooling Heating Refrigerant pipe diameter Liquid 1 4 6 35 mm Gas 5 8 15 88 mm ...

Page 11: ...4 CIRCUIT DIAGRAM R410A WALL MOUNTED type INVERTER ...

Page 12: ...ELLOW ORANGE BLUE BROWN RED RED RED BROWN YELLOW WHITE BLACK BROWN BROWN BLACK BLACK BLUE BLUE YELLOW BROWN RED ORANGE BLACK WHITE BROWN RED BROWN RED ORANGE YELLOW GREEN BLUE PURPLE GRAY BLACK WHITE BLUE YELLOW PURPLE WHITE BLACK RED BROWN ORANGE RED WHITE BLACK 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 ...

Page 13: ...5 DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER ...

Page 14: ...based on the fan speed mode and the outdoor temperature minimum frequency maximum frequency maximum frequency AS B24LDC 15Hz 115Hz 80Hz Outside air Outside air temperature temperature 36 C A zone 34 C 32 C B zone 30 C 21 C C zone 19 C Hi Me Lo Quiet A zone 115Hz 66Hz 54Hz 34Hz B zone 115Hz 66Hz 54Hz 34Hz C zone 115Hz 66Hz 54Hz 34Hz 24LDC D zone 58Hz 45Hz 38Hz 24Hz Table 1 Compressor Frequency Rang...

Page 15: ...side air temperature temperature 19 C C zone 17 C 14 C B zone 12 C A zone Hi Me Lo Quiet A zone 130Hz 130Hz 75Hz 62Hz B zone 130Hz 130Hz 75Hz 62Hz 24LDC C zone 130Hz 130Hz 57Hz 62Hz When the room temperature is between 2 C to 3 C of the setting temperature the compressor frequency is controlled within the range shown in Table2 However the maximum frequency is limited in the range shown in Figure 2...

Page 16: ...er after the compressor is driven the indoor unit shall run at operation frequency of 58Hz for a minute Operating frequency AS B24LDC 34Hz room room temperature temperature compressor ON Ts 0 5 C compressor OFF Compressor ON OFF Indoor fan Dry air flow OFF 1 When Air Clean function is ON air flow is S Lo 10 30 60 180 60 180 60 10 30 sec Table 3 Compressor frequency Fig 3 Compressor Control based o...

Page 17: ...ic dry Cooling automatic dry TS 2 C TB TS 2 C Monitoring Monitoring Monitoring TB TS 2 C Heating Heating Monitoring When COOING was selected at the air conditioner operates as follow The same operation as COOLING OPERATION of item 1 above is performed When the room temperature has remained at set temperature 1 C for 8 minutes operation is automatically switched to DRY and the same operation as DRY...

Page 18: ... MED Fan Speed 05 05 3 COOLING OPERATION Switch the airflow AUTO and the Fig 6 indoor fan motor will run according airflow change over Cooling AUTO to a room temperature as shown in When the room Figure 6 temperature rises On the other hand if switched in HIGH mode HIGH QUIET the indoor motor will run at a constant airflow of COOL operation modes QUIET LOW MED MED mode HIGH as shown in Table 5 Whe...

Page 19: ...UIET LOW MED MED mode HIGH as shown in Table 5 MED mode When the room temperature lowers Room temperature D Setting temperature 6 COOL AIR PREVENTION CONTROL Heating mode Indoor heat exchanger Indoor heat exchanger temperature temperature Cool air prevention S Lo The maximum value of the indoor fan speed is set as shown in Figure 8 based on the detected temperature by the indoor heat exchanger sen...

Page 20: ...ll After starting up the outdoor fan it operates with the following speed for initial 20 seconds Table 8 Fan speed when starting up Outdoor fan After operating the defrost control function on heating mode its speed becomes 1 000rpm regardless of the compressor frequency However it returns to the normal speed control when the defrosting operation does not function for 240 minutes after releasing th...

Page 21: ...dense near the outlet louvers and drop of water may drip from the air conditioner During the Cooling and Dry modes if the Air Flow Direction Louvers are left in the hating range for more than 20minutes they will automatically return to position During Monitor operation in AUTO CHANGEOVER mode the airflow direction automatically becomes the horizontal airflow direction does not cahnge and it cannot...

Page 22: ...o select Vertical Airflow Swing Operation To select Horizontal Airflow Swing Operation When the swing signal is received from the remote controller the horizontal louver starts to swing All mode Swinging Range 5 1 When the indoor fan is S Lo or Stop mode the swinging operation is interrrupted and it stops at either upper end or bottom end To select Vertical and Horizontal Airflow Swing Operation W...

Page 23: ...n in the table 9 Cooling Heating Min Max Min Max Dry AS B24LDC 15Hz 115Hz 15Hz 130Hz 34Hz Table 9 Compressor Operation Frequency Range 2 OPEARTION FREQUENCY CONTROL AT START UP The compressor frequency soon after the start up is controlled as shown in the figure 10 Fig 10 Compressor Control at Start up 500sec 05 10 AS B24LDC 40Hz Frequency ...

Page 24: ... to bring the room temperature to the desired set temperature value by the timer previously set Operation mode Stop mode Set time of timer The program timer allows the OFF timer and ON timer to be used in combination one time Operation mode Operation will start from the timer setting either OFF timer or ON timer whichever is closest to the clock s current timer setting The order of operations is i...

Page 25: ... the cooling operation mode When the sleep timer is set the setting temperature is increased 1 C It increases the setting temperature another 1 C after 1 hour After that the setting temperature is not changed and the operation is stopped at the time of timer setting Ts Set 60min In the heating operation mode When the sleep timer is set the setting temperature is decreased 1 C It decreases the sett...

Page 26: ...fter the compressor stopped When the power was interrupted by a power failure etc during operation the operation contents at that time are memorized and when power is recovered operation is automatically started with the memorized operation contents When the power is interrupted and recovered during timer operation since the timer operation time is shifted by the time the power was interrupted an ...

Page 27: ...ilable 16 COMPRESSOR PREHEATING Table 13 Preheating Operation Release Temperature Temperature Temperature 5 C 17 COIL DRY AND CLEAN OPERATION CONTROL The coil dry and clean operation functions by pressing COIL DRY button on the remote controller The coil dry operation is consisted of 3 cycles of Fan operation 3 minutes Heating operation 2 minutes and Fan operates for 3 minutes at last before endin...

Page 28: ... upon starting operation ND Compressor operating time Less than 17 minutes 17 to 60 minutes 60 minutes to 4 hours After 4 hours Does not operate 9 C 5 C 3 C Less than 35 minutes 35 minutes to 4 hours Does not operate Compressor operating time After 4 hours 3 C 6 C 2 CONDITION OF THE DEFROST OPERATION COMPLETION Defrost operation is released when the conditions become as shown in Table 16 Table 16 ...

Page 29: ...essor integrating operation Over 60 minutes to below 240 minutes Compressor integrating operation Over 240 minutes Compressor integrating operation Over 35 minutes to below 240 minutes Compressor integrating operation Over 240 minutes Outdoor heat exchanger temperature Below 9 C Outdoor heat exchanger temperature Outdoor heat exchanger temperature Outdoor heat exchanger temperature Outdoor heat ex...

Page 30: ...r heat exchanger temperature is less than 4 C and compressor operation integrating time lasts for more than 30 minutes AS B24LDC OFF Defrost Flow Chart Heating operation stop Outdoor heat exchanger temperature Below 4 C and Compressor integrating operation Over 30 minutes Defrost start Defrost Indicater Operation lamp Outdoor heat exchanger temperature Over 13 C or Compressor ON time Over 15 minut...

Page 31: ...inking Table 17 Discharge Temperature Over Rise Prevension Control Release Temperature Temperature Temperature Temperature 2 CURRENT RELEASE CONTROL The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit velue that was set up with the outdoor temperature The compressor frequency returns to the designated frequency of the indoor unit at the ...

Page 32: ... Fig 11 Heating Overload Protection Control Control System Temperature AS B24LDC Temperature Refer to below Temp Temp Compressor Operation Frequency down every 60 seconds 05 19 50 C The forced cooling operation starts up when MANUAL AUTO button is pressed more than 10 seconds During the forced cooling operation it keeps operation regardless of detection value of room temperature sensor Operation L...

Page 33: ...al When Air Clean operation is ON Indoor fan speed becomes at S Lo 270rpm and not at 0rpm even if the indoor fan is in stop condition Air Clean operation becomes OFF during the defrost operation Operation stops In operation Air Clean operation is OFF It continues to operate Air Clean operation becomes ON Operation keeps stopping It continues to operate Air Clean operation becomes OFF In operation ...

Page 34: ...6 REFRIGERANT CAUTION R410A R410A WALL MOUNTED type INVERTER ...

Page 35: ...ng hose side and the ser vice port side are possible to open and close at the same time Thermistor vacuum gauge Fig 4 15 To remove moisture from the refrigerating cycle complete ly it is necessary to perform appropriate vacuum drying For that reason vacuum conditions can be confirmed cer tainly Vacuum valve Fig 4 16 This valve builts in a check valve and it is easily possible to vacuum a refrigera...

Page 36: ...el with HFC R407C R410A model If you use existing pipes it may cause resolution of compressor oil by remaining mineral oil 5 8 15 88mm R410A 22 29 19 7 25 R22 R407C R22 R407C R22 R407C 19 4 23 20 27 3 4 19 05mm R410A 24 36 24 29 R22 R407C 23 7 29 24 Material Nominal diameter in 1 4 3 8 1 2 5 8 3 4 7 8 1 1 8 1 1 4 1 1 2 1 3 8 1 6 35 9 52 12 70 15 88 19 05 22 22 28 58 31 75 38 10 34 92 25 40 Outside...

Page 37: ...efrigerant charge Do it always from the liquid phase side Don t charge from the gas phase side Compressor oil is changed Be careful to handle synthetic oil since it resolves easily by moisture and contamination Don t mix new synthetic oil and mineral oil It may cause trouble We developed new synthetic oil since HFC refrigerant doesn t dissolve in mineral for R22 oil 06 03 ...

Page 38: ...It is necessary to use the vacuum pump which can obtain the high vacuum condition Precaution on Tools Feature 2 New Refrigerant has Approx 1 6 times higher pressure than previous refrigerant R410A High Pressure Different point from previous one Diameter of Service port has been changed from 1 4 Flare to 5 16 Flare It requires the gauge manifold and charge hose exclusively for R410A It requires the...

Page 39: ...ase out schedule of HCFC according to Montreal protocol 1996 2010 2000 2004 2015 2020 2030 60 40 20 100 Year 80 HCFC consumption of 1989 CFC consumption of 1989 x 2 8 65 35 10 0 5 started control only service use total abolition 100 0 06 05 ...

Page 40: ...emical compound including chlorine and hydrogen ODP 0 02 01 HCFC Hydro Chloro Fluoro Carbon For example R22 for air conditioner R134a for Car air conditioner HFC3 Hydro Fluoro Carbon R407C for air conditioner Refrigerant characteristics R22 Composition wt R22 100 Boiling Point 40 8 Behavior Pressure at 54 5 C kPa 2 151 Temperature Glide deg 0 ODP 0 055 R407C R32 R125 R134a 23 25 52 43 6 zeotrope 2...

Page 41: ... Pressure Mpa 39 2 27 40 2 32 41 2 38 42 2 44 44 2 57 45 2 63 46 2 69 47 2 76 48 2 83 49 2 90 51 3 04 52 3 11 53 3 18 54 3 26 56 3 41 57 3 49 58 3 57 59 3 65 61 3 82 62 3 90 63 3 99 64 4 08 Desighed pressure of R410A refrigerant Pressure Temp Relation between R410A condensing temperature and saturated pressure Temp Pressure Advantage Disadvantage Suitable for R410A higher system performance Near A...

Page 42: ...del when replacing CAUTION Check if the compressor is suitable for the refrigerant model when replacing Complete welding within 15 minutes after opening the cap when replacing COMPRESSOR Use better grade of material for sliding parts for securing good lubrication of sliding part as HFC refrigerant does not contain chloride Review insulating materials Increase pressure resistance strength CAUTION D...

Page 43: ...and Timer lamp do not light up 2 Self Diagnosis Function Either Operation lamp or Timer lamp is blinking How to operate the self diagnosis function Self diagnosis table and Check points 3 Trouble shooting method Serial signal check IPM protection check Active filter error check Refrigeration cycle diagnosis ...

Page 44: ...voltage between terminal of C6 normal Is DC voltage between terminals of C39 and C19 Is DC voltage between terminal C17 normal YES AC230V YES AC230V YES DC325V Is DC voltage between terminals of C42 YES C39 DC20V C19 DC13 5 1V YES DC5V IC8 T1 or IC15 IC19 defective IC20 defective YES DC15V Is DC voltage between terminals C50 normal YES Pulse wave of DC5Vp p IC26 Q10 defective F1 VA1 defective Inpu...

Page 45: ...serting the AC is on the starts to operates from remote control At this state a normal operation indication is performed 3 By pressing TEST button of remote control indicated only during 3 minutes ST 3 minutes ST 3 minutes from the timing AC is ON Lamp display 3 minutes delay Turn off Operating Error Indication Normal indication after 3min ST Indication AC ON Start operation Input TEST signal How ...

Page 46: ...ing method and diagnosis method OFF 0 5 sec 4 times Serial forward transfer error at starting up operation The outdoor unit does not receive the signal for 10 consecutive seconds from the time when the power relay was ON Outdoor unit stops Diagnosis Point Check the indoor outdoor cable connection in order If the cable wiring is not abnormal measure the voltage of the outdoor unit terminals and dia...

Page 47: ...stics table Controller PCB defective 0 5 sec 3 times Outdoor Heat Exchanger Thermistor Error The detection value of the outdoor heat exchanger thermistor is open Compressor Outdoor Fan OFF It automatically releases when the normal value is detected Diagnosis Point Check Thermistor resistance value Refer to Thermistor characteristics table Controller PCB defective 0 5 sec 4 times Outdoor Temperatur...

Page 48: ...on Electric air clean power supply circuit abnormal 07 05 Indoor unit Controller Error 0 5 sec 2 times Forced Auto Switch Error Forced Auto Switch becomes ON for 10 consecutive seconds It indicates the error but the operation continues Diagnosis Point Check if forced Auto Switch is kept pressed Forced Auto Switch defective Controller PCB defective Power Supply Frequency Detection Error 20 22 21 Wh...

Page 49: ... if CT wire is open Controller PCB defective 0 5 sec 5 times The compressor speed does not synchronize with the control signal Including start up failure of the compressor Permanent stop Diagnosis Point Check if 2 way valve or 3 way valve is left open Check the compressor Winding resistance value Loose lead wire Refrigeration cycle defective Refer to after mentioned Refrigerant cycle diagnosis Out...

Page 50: ... Check if 2 way valve or 3 way valve is left open Heat radiation is blocked Inlet Outlet Check if Outdoor Fan is defective does not rotate Refrigeration cycle defective Refer to after mentioned Refrigerant cycle diagnosis Refrigerant Cycle Error 0 5 sec 3 times Excessive High Pressure Protection on Cooling Excessive high pressure protection on cooling mode has been activated Compressor Outdoor Fan...

Page 51: ...off error is detected Compressor Outdoor Fan OFF Diagnosis Point Check the wiring connection Connector is loose open Choke coil Controller PCB defective Refer to after mentioned Active Filter diagnosis CAUTION Even if the unit is normal it may detect error depending on the power supply voltage condition 07 08 Active Filter Error 0 5 sec 4 times PFC Circuit Error Excessive voltage of DC voltage on ...

Page 52: ...he voltage between terminals N 3 on the Outdoor unit terminal plate Refer to Fig 1 for Measuring Method Judge the result based on Table 1 L N Measurement method 1 Diode Dielectric voltage Higher than 600V Range DC Normal DC30 60V Red Black White Range DC Normal DC30 60V Red Black White L N Fig 1 Selial Signal Measuring Method Measurement 1 Measurement 2 Indoor unit Outdoor unit Defective point vol...

Page 53: ...points No Abnormal Incorrect wiring Correct and recheck Parts touched Correct and recheck Parts broken Change the broken part Check point 2 Turn on the power and press TEST button Yes Rotating Go to Check point 3 on Remote Control No Not rotating IPM or PCB defective Replace PCB Is the outdoor fan rotating Check point 3 Operate the unit for certain time and Yes Operating The unit is normal check i...

Page 54: ...d Parts broken Parts touched Correct and recheck Parts broken Change the broken part Turn on the power and press TEST button on Remote Control Is the outdoor fan rotating Operate the unit for certain time and measure the terminal voltage of the The unit is normal discharge resistance Is the DC voltage between 350 to 425V Recheck Operate the unit for certain time and Yes Operating Check completed c...

Page 55: ...ure at 20degC U V 1 147 V W 1 136 U W 1 161 The above resistance value is a typical value There is some distribution As it also changes by the compressor temperature the measured value may be much different from the above table when measured right after stopping operation 2 Checking method of EEV failure Insert the AC plug and start up the operation Check if the EEV operates just before compressor...

Page 56: ...NDING DATA R410A WALL MOUNTED type INVERTER 1 Jumper setting of Indoor unit and Outdoor unit 2 Outdoor unit Pressure Value and Total Electric Current Curve 3 Thermistor Resistance Values 4 Capacity Input Data ...

Page 57: ...ote Control JM8 JP JM10 JP Code A Default Code B Auto Restart It is possible to disengage Auto Restart function if it is not needed Indoor Unit JM5 JP With Auto Restart function Default Without Auto Restart function Outdoor Unit AO S24LDC JP JM1 JM903 JM902 JM901 Normal Preheat 24LDC Higher Preheat it is possible to select the higher or standard level of preheating function When it is set up at th...

Page 58: ...EST button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor Low Pressure Curve AS B24LDC 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve AS B24LDC Measure the low pressure with the pressure meter at the service valve Measure the outdoor unit overall current with the curre...

Page 59: ... button of remote control 2 Operate continuously for 30 minutes After 60 minutes of operation Test mode is released automatically 1 Indoor Outdoor Temperature Outdoor High Pressure Curve AS B24LDC 2 Indoor Outdoor Temperature Outdoor Total Electric Current Curve AS B24LDC outdoor unit overall current with the current clamp meter at Power Cable length 08 03 2 0 2 2 2 4 2 6 2 8 3 0 3 2 3 4 3 6 3 8 4...

Page 60: ...95 0 35 00 33 26 1 41 40 00 27 09 1 62 104 0 40 00 27 09 1 62 45 00 22 20 1 85 113 0 45 00 22 20 1 85 50 00 18 29 2 08 122 0 50 00 18 29 2 08 55 00 15 15 2 31 131 0 55 00 15 15 2 31 60 00 12 62 2 54 140 0 60 00 12 62 2 54 65 00 10 56 2 76 149 0 65 00 10 56 2 76 70 00 8 88 2 97 158 0 70 00 8 88 2 97 75 00 7 50 3 17 167 0 75 00 7 50 3 17 80 00 6 36 3 36 176 0 80 00 6 36 3 36 85 00 5 42 3 53 185 0 85...

Page 61: ...31 4 39 113 0 45 00 2 12 3 46 113 0 45 00 4 35 4 49 122 0 50 00 1 75 3 66 122 0 50 00 3 59 4 57 131 0 55 00 1 45 3 83 131 0 55 00 2 97 4 64 140 0 60 00 1 21 3 99 140 0 60 00 2 48 4 70 149 0 65 00 1 01 4 12 149 0 65 00 2 07 4 74 158 0 70 00 0 85 4 24 158 0 70 00 1 74 4 78 167 0 75 00 0 72 4 34 167 0 75 00 1 47 4 81 176 0 80 00 0 61 4 43 176 0 80 00 1 25 4 84 Outdoor heat exchanger thermistor Outdoo...

Page 62: ...in the defrosting cycle Capacity Input 30 40 50 60 70 80 90 100 110 120 130 140 15 10 5 0 5 10 15 20 25 Outdoor DB C Capacity Current release works 5 5 24 17 Indoor DB 20 C 12 60 70 80 90 100 110 120 130 140 150 160 170 180 15 10 5 0 5 10 15 20 25 Outdoor DB C Input Current release works 5 5 24 17 12 Indoor DB 20 C Rated operation Without Frost Without Frost Without Frost Maximum operation Current...

Page 63: ... and input change largely when temperature is 10 or less degrees C as outdoor fan speed is decreased due to low ambient temperature cooling control Both capacity and input change more largely at less than 0 degrees C of ambient temperature as outdoor fan speed is decreased further Capacity Input 60 70 80 90 100 110 120 130 140 150 10 0 10 20 30 40 Outdoor DB C Capacity 19 Indoor 27 19 C 43 20 30 4...

Page 64: ...9 REPLACEMENT PARTS R410A WALL MOUNTED type INVERTER ...

Page 65: ...REPLACEMENT PARTS Models AS B24LDC INDOOR UNIT 09 01 ...

Page 66: ......

Page 67: ......

Page 68: ...REPLACEMENT PARTS 09 04 Models AS B24LDC ...

Page 69: ...REPLACEMENT PARTS 09 05 Model AO S24LDC ...

Page 70: ......

Page 71: ...he following combination Twist it 1 time is to twist 360 red W16 black W17 two times Width of twist 30 40mm Connect a wire red with terminal to POLE of ACTPM Connect a wire black with terminal to POLE of ACTPM POLE ACTPM ACTPM POLE ACTPM IPM PWB Pay attention the Direction of installation Width of twist 30 40mm ...

Page 72: ...ugh sketch assemble WIRE with TERMINAL after assembling COIL CHORK Pay attention to direction of WIRE with TERMINAL Like a rough sketch twist WIRE with TERMINAL and assemble it certainly Twist it 1 time is to twist 360 Five times Width of twist 40 50mm CASE INV Tighten COIL CHOKE with SCREW after insert STOPPER Don t come off from the STOPPER COIL CHORK SCREW TAPTIATE WIRE with TERMINAL STOPPER 1 ...

Page 73: ...REPLACEMENT PARTS 09 09 Model AO S24LDC Don t go out the groove Either will do because there is no polarity Pay attention the direction Width of twist 40 50mm Note the wiring route of the TERMINAL OK NG ...

Page 74: ...ollowing combination Twist it 1 time is to twist 360 white W12 blue W7 purple W13 yellow W8 Like figure 2 wire lead wire Insert TERMINAL in CONTACT certainly Be sure to fasten by WIRE CLAMPER after wiring Fit the wire in the groove firmly Fasten the wire with BINDER M three times Assemble PWB ASSY CAPACITOR and Wiring PWB ASSY K05DG CAPACITOR BINDER M Figure 1 PWB ASSY CAPACITOR SPACER BINDER M RE...

Page 75: ...el AO S24LDC figure 2 Fix WIRE into groove firmly Fix WIRE into WIRE CLAMPER firmly BINDER M TM301 TM302 L2 L1 P N1 Like a rough sketch bind BINDER M Don t upturn the cut end of BINDER M and don t bind outside CASE INVERTER NG NG ...

Page 76: ...following combination Twist it 1 time is to twist 360 Width of twist 40 50mm black W17 black W1 brown W29 white W18 white W2 orange W28 black W9 black W19 gray W21 white W20 W18 white W21 gray W1 black W2 white W28 orange W29 brown W17 black W9 black W19 black W20 white Twist so as not to touch parts Three times One time Four times Three times Two times ...

Page 77: ...REPLACEMENT PARTS 09 13 Model AO S24LDC Don t stick out lead wire from groove Put lead wire between CN101 Fix WIRE into groove NG B B A A ...

Page 78: ...n lead wire when assembling PWB SUB ASSY FILTER to CASE INV Like figure 1 connect lead wire of orange W28 and brown W29 Insert STOPPER shown circle of figure A into inside of CASE INV Insert into inside of CASE INV A VIEW figure A From downside of CASE INVERTER lead wire must not touch parts Pay attention so as not to fasten lead wire Stopper NG 1 ...

Page 79: ...REPLACEMENT PARTS 09 15 Model AO S24LDC SCREW TAPPING Fasten wire into groove figure 1 TM101 TM102 W28 orange W29 brown 1 NG ...

Page 80: ...SSY PWB ASSY K05CU MAIN REGULATIONS Like a rough sketch assemble PWB ASSY MAIN to PWB HOLDER Insert PWB in nail of this side accurately PWB HOLDER Widen when fitting PWB Don t knock it in CASE when fitting PWB PWB ASSY MAIN Hold it in nail of this side certainly 1 ...

Page 81: ...wire lead wire Do the twist work with the following combination Twist it 1 time is to twist 360 White W306 Black W307 Six times Width of twist 30 40mm Insert this lead wire inside Insert this lead wire into STOPPER Don t put out lead wire up W306 White W307 Black W306 White W307 Black W19 White W20 Black W21 Gray TM600 W9 Black TM601 CN200 CN110 Width of twist 30 40mm 1 2 3 ...

Page 82: ...l AO S24LDC WIRE with CONNECTOR L 350 Insert these WIRE with CONNECTOR into groove Wire must not stick out from STOPPER To stick out is NG WIRE with CONNECTOR L 250 WIRE with CONNECTOR L 200 CN303 CN301 CN11 CN42 CN40 CN400 1 2 3 ...

Page 83: ... S24LDC PROCESS Wiring CABLE BINDER C REGULATIONS Like a rough sketch fasten HARNESS by BINDER BINDER C less than 15mm Fasten CABLE Put it within this range Don t stretch less than 10mm W4 Red W21 Gray W9 Black W19 White W20 Black 1 1 ...

Page 84: ...OCESS Arrangement of lead wires to be connected to the inverter assembly BINDER 1 Maximum Thermistor Heat exchanger Pass the lead wire underneath the piping Thermistor Outdoor Temp EEV Coil Lead 20mm A A B B C D Model AO S24LDC ...

Page 85: ...arge outdoor temperature heat exchanger step over the signal wire Binder location Height upon gathering E E E E C F F D F F each wire Distance between Inverter case bottom and EMI 30 50 10 20 20 30 40 60 Binder location Gathering location Spec of Slack for 4way valve lead Gather 4way valve lead of inverter case bottom and 4way valve lead 0 10 20 30 10 20 4way valve lead height 20 30 Motor lead hei...

Page 86: ...or Lead 7 Thermistor Heat exchanger 3 EEV Coil Lead 5 Thermistor Outdoor Temp 4 2 Motor Lead 7 Comp Lead 1 Comp Lead Lead wire shall be securely fit in 1 4way valve Coil Lead 6 Motor Lead 7 EEV Coil Lead 5 Thermistor Outdoor Temp 4 Thermistor Heat exchanger 3 09 22 Thermistor Discharge Each Connector Location Model AO S24LDC ...

Page 87: ...beneath the rib Lead wire shall be beneath the rib 6 Motor Lead 7 Motor Lead 7 Motor Lead 7 Motor Lead 7 Motor Lead 7 EEV Coil Lead 5 Thermistor Outdoor Temp 4 Thermistor Heat exchanger 3 09 23 Thermistor Discharge Each Lead Location Spec of slack motor Lead Compressor lead shall be located beneath motor lead Model AO S24LDC ...

Page 88: ...10 INSTALLATION MANUAL R410A WALL MOUNTED type INVERTER ...

Page 89: ...r or wire cutting pliers then strip the insula tion to about 25 mm 1 to expose the solid wire 2 Using a screwdriver remove the terminal screw s on the terminal board 3 Using pliers bend the solid wire to form a loop suitable for the terminal screw 4 Shape the loop wire properly place it on the terminal board and tighten se curely with the terminal screw using a screwdriver B For strand wiring 1 Cu...

Page 90: ...removal Remove the tapping screws Installing the connector cover 1 After inserting the two front hooks then insert the rear hook 2 Tighten the tapping screws 7 Pump down the system for at least 15 minutes then check if the compound pressure gauge reads 0 1 MPa 76 cmHg 1 bar 8 At the end of pump down close the low pressure side gauge of the gauge manifold fully and stop the vacuum pump 9 Slowly loo...

Page 91: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan GS20032006 FEB 2006 Printed in Japan ...

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