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Troubleshooting

SiBE05-722EE

100

Service Diagnosis

4.24 Output Overcurrent Detection

Error Code

Method of Error
Detection

An output overcurrent is detected by checking the current that flows in the inverter DC section.

Error Decision
Conditions

A position signal error occurs while the compressor is running.

A rotation speed error occurs while the compressor is running.

An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.

If the error repeats, the system is shut down.

Reset condition: Continuous run for about 11 minutes without any other error

Supposed
Causes

Poor installation condition

Closed stop valve

Defective power module

Wrong internal wiring

Abnormal power supply voltage

Defective outdoor unit PCB

Power supply voltage is not as specified.

Defective compressor

Содержание Super Multi NX FLKS25BAVMB

Страница 1: ...Service Manual Inverter Pair Floor Ceiling Suspended Dual Type FLK X S BA Series SiBE05 722EE Applicable Models O Inverter Pair Cooling Only O Inverter Pair Heat Pump...

Страница 2: ...25BAVMB FLKS35BAVMB Outdoor Unit RKS25E2V1B RKS25G2V1B RKS35E2V1B RKS35G2V1B RKS25G2V1B9 RKS35G2V1B9 zHeat Pump Indoor Unit FLXS25BAVMB FLXS35BAVMB9 FLXS35BAVMB Outdoor Unit RXS25E2V1B RXS25G2V1B RXS2...

Страница 3: ...4 Functions and Control 28 1 Main Functions 29 1 1 Temperature Control 29 1 2 Frequency Principle 29 1 3 Airflow Direction Control 31 1 4 Fan Speed Control for Indoor Unit 31 1 5 Program Dry Operation...

Страница 4: ...t 76 4 10 Outdoor Unit PCB Abnormality 77 4 11 OL Activation Compressor Overload 79 4 12 Compressor Lock 81 4 13 DC Fan Lock 82 4 14 Input Overcurrent Detection 83 4 15 Four Way Valve Abnormality 84 4...

Страница 5: ...ling Operation 116 2 Trial Operation 118 3 Field Settings 119 3 1 When 2 Units are Installed in 1 Room 119 3 2 Facility Setting Jumper cooling at low outdoor temperature 120 3 3 Jumper and Switch Sett...

Страница 6: ...rding Safety of Workers Warning Do not store equipment in a room with fire sources e g naked flames gas appliances electric heaters Be sure to disconnect the power cable from the socket before disasse...

Страница 7: ...the refrigerant system If air enters the refrigerant system an excessively high pressure results causing equipment damage and injury Warning Caution Do not repair electrical components with wet hands...

Страница 8: ...ve heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and...

Страница 9: ...not conducted securely the equipment may fall and cause injury Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug is dusty...

Страница 10: ...om and wet the furniture and floor Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor Caution Icon Type of Information Description Warning Warnin...

Страница 11: ...SiBE05 722EE List of Functions 1 Part 1 List of Functions 1 Functions 2...

Страница 12: ...diagnosis digital LED display z z Auto swing right and left Wiring error check function 3 D airflow Anti corrosion treatment of outdoor heat exchanger z z Comfort Control Auto fan speed z z Indoor un...

Страница 13: ...osis digital LED display z z Auto swing right and left Wiring error check function 3 D airflow Anti corrosion treatment of outdoor heat exchanger z z Comfort Control Auto fan speed z z Indoor unit qui...

Страница 14: ...gnosis digital LED display z z Auto swing right and left Wiring error check function 3 D airflow Anti corrosion treatment of outdoor heat exchanger z z Comfort Control Auto fan speed z z Indoor unit q...

Страница 15: ...f diagnosis digital LED display z z Auto swing right and left Wiring error check function 3 D airflow Anti corrosion treatment of outdoor heat exchanger z z Comfort Control Auto fan speed z z Indoor u...

Страница 16: ...down z z Self diagnosis digital LED display z z Auto swing right and left Wiring error check function 3 D airflow Anti corrosion treatment of outdoor heat exchanger z z Comfort Control Auto fan speed...

Страница 17: ...SiBE05 722EE Specifications 7 Part 2 Specifications 1 Specifications 8 1 1 Cooling Only 8 1 2 Heat Pump 11...

Страница 18: ...ashable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 78 78 78 Power Factor 96 4 95 1 94 1 93 3 94 2 92 9 Temper...

Страница 19: ...f Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 78 78 78 Power Factor 96 4 95 1 94 1 93 3 94 2 92 9 Temperature Control Micro...

Страница 20: ...Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 78 78 78 Power Factor 96 4 95 1 94 1 93 3 94 2 92 9 Temperature Control Microc...

Страница 21: ...ble Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power...

Страница 22: ...w Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor 9...

Страница 23: ...ew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor...

Страница 24: ...dew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor...

Страница 25: ...dew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor...

Страница 26: ...dew Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor...

Страница 27: ...Proof Removable Washable Mildew Proof Running Current Rated A 0 33 0 32 0 31 0 36 0 34 0 33 0 38 0 36 0 35 0 38 0 36 0 35 Power Consumption Rated W 70 70 70 74 74 74 78 78 78 78 78 78 Power Factor 96...

Страница 28: ...Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 19 2 Outdoor Unit 21 2 1 RK X S25 35E2V1B 21 2 2 RK X S25 35G2V1B 23 2 3 RK X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B R...

Страница 29: ...ized control HA 4 S24 Connector for display PCB 5 S26 Connector for signal receiver PCB 6 S32 Connector for indoor heat exchanger thermistor 7 S37 Connector for power supply PCB 8 JA Address setting j...

Страница 30: ...ector for AC fan motor 4 V1 Varistor 5 FU1 Fuse 3 15 A 250 V S36 FU1 H2 H3 H4 H5 H6 H1 V1 2P084361 1 1 S25 Connector for control PCB 2 LED1 H1P LED for operation green 3 LED2 H2P LED for timer yellow...

Страница 31: ...protector 5 S70 Connector for fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 HC3 HC4 HL3 HN3 Connector f...

Страница 32: ...ilter PCB PCB1 1 S11 Connector for main PCB 2 HL1 HN1 S Connector for terminal board 3 E Terminal for earth wire 4 HC1 HC2 HL2 HN2 Connector for main PCB 5 HR1 Connector for reactor 6 FU3 Fuse 20 A 25...

Страница 33: ...nector for magnetic relay 6 S70 Connector for fan motor 7 S80 Connector for four way valve coil 8 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 9 HL3 HN3 Conn...

Страница 34: ...nector for main PCB 2 HL1 HN1 S Connector for terminal board 3 E1 Terminal for earth wire 4 E2 Connector for terminal board earth 5 HL2 HN2 Connector for main PCB 6 HR1 Connector for reactor 7 FU3 Fus...

Страница 35: ...ctor for magnetic relay 5 S70 Connector for fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 S100 Connector...

Страница 36: ...r for terminal board 3 E1 E2 Terminal for earth wire 4 HL2 HN2 Connector for main PCB 5 HR1 Connector for reactor 6 FU1 Fuse 3 15 A 250 V 7 FU3 Fuse 20 A 250 V 8 V2 V3 Varistor HR1 HL2 3P254234 1 FU1...

Страница 37: ...S71 Connector for DC fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 E1 E2 Terminal for earth wire 9 HL1 H...

Страница 38: ...peration 36 1 10 Inverter POWERFUL Operation 37 1 11 Clock Setting 38 1 12 Other Functions 39 2 Thermistor Functions 40 3 Control Specification 41 3 1 Mode Hierarchy 41 3 2 Frequency Control 42 3 3 Co...

Страница 39: ...frequency of the compressor is controlled by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperatu...

Страница 40: ...nce the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency...

Страница 41: ...an speed control the step SL is not available The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic Cooling The following drawing explains the...

Страница 42: ...the target temperature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Thermostat turns on al...

Страница 43: ...temperature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and operation mode s...

Страница 44: ...he zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Co...

Страница 45: ...hen automatically raises the target temperature slightly in cooling or lowers it slightly in heating This prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sle...

Страница 46: ...LEAVE button is ineffective in dry operation and fan operation 2 Details of Function A mark representing HOME LEAVE is indicated on the display of the remote controller The indoor unit is operated acc...

Страница 47: ...rter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor f...

Страница 48: ...the following steps 1 Press the CLOCK button is displayed and blinks 2 Press the TIMER or button to set the clock to the present time Holding down the TIMER or button increases or decreases the time d...

Страница 49: ...to start operation Press once again to stop it The ON OFF button is useful when the remote controller is missing or the battery has run out The operation mode refers to the following table Forced cool...

Страница 50: ...ure used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is used for detecting disconn...

Страница 51: ...cooling operation R19505 Stop Discharging from capacitor Preheating operation Stop indoor unit OFF Cooling includes drying Fan Normal operation mode Power transistor test mode Forced cooling operatio...

Страница 52: ...bited frequency There is a certain prohibited frequency such as a power supply frequency For Heat Pump Model 1 Determine command frequency Command frequency is determined in the following order of pri...

Страница 53: ...ts difference from the frequency previously calculated 2 I control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the D value When...

Страница 54: ...A C Control II Control I ON condition Discharge pipe temperature B C Radiation fin temperature 85 C OFF condition Discharge pipe temperature C C Radiation fin temperature 90 C Control II ON condition...

Страница 55: ...he compressor starts after the fault of four way valve switching The lower limit of frequency keeps A Hz for B seconds with any conditions 1 through 4 above 3 3 4 3 minute Standby Turning on the compr...

Страница 56: ...S25 35E2V1B RK X S25 35G2V1B RK X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B RXS35K2V1B RXS25 35L2V1B RXS25 35L3V1B A C 110 110 B C 105 103 C C 101 98 D C 99 93 E C 97 88 Zone Control Stop zone When the t...

Страница 57: ...put frequency is lowered by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current droppin...

Страница 58: ...mitation is judged with the indoor heat exchanger temperature A C B C C C 7 5 3 R22433 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Dropping zone Stop zone 0 C C C B C A C...

Страница 59: ...ll as normal operation 5 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 6 Fan speed control during POWERFUL...

Страница 60: ...defrosting Conditions for Canceling Defrost The judgment is made with the outdoor heat exchanger temperature B C The same value continues Frequency Compressor Four way valve Fan ON OFF ON OFF ON OFF...

Страница 61: ...discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Detail The followings are the examples of electronic expansion valve control which function in each...

Страница 62: ...frosting 3 11 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts thus preventing superheating or liquid compression 3 11 5 Control when the Fre...

Страница 63: ...isconnection is ascertained Discharge pipe temperature 6 C outdoor heat exchanger temperature 2 When the operation mode is heating When the following condition is fulfilled the discharge pipe thermist...

Страница 64: ...wer consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is low comparing with that in the nor...

Страница 65: ...SiBE05 722EE Remote Controller 55 Part 5 Remote Controller 1 Remote Controller 56...

Страница 66: ...and the remote controller such as a curtain the unit will not operate The maximum distance for communication is about 4 m HOME LEAVE 1 button Press this button to start HOME LEAVE operation The HOME...

Страница 67: ...last ON TIMER button Press this button and adjust the time with the TIMER setting button Press this button again to complete TIMER setting OFF TIMER button Press this button and adjust the time with t...

Страница 68: ...k 81 4 13 DC Fan Lock 82 4 14 Input Overcurrent Detection 83 4 15 Four Way Valve Abnormality 84 4 16 Discharge Pipe Temperature Control 86 4 17 High Pressure Control in Cooling 87 4 18 Compressor Syst...

Страница 69: ...n lamp OFF Check the outdoor temperature Heating operation is not available when the outdoor temperature is 18 CWB or higher and cooling operation is not available when the outdoor temperature is belo...

Страница 70: ...ssion error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Service Monitor The indoor unit has a green LED LED A on the co...

Страница 71: ...cate non corresponding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mo...

Страница 72: ...long beep 3 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number corresponds with the error code but the right side numbe...

Страница 73: ...g beep Both the left side and right side numbers correspond with the error code 7 Determine the error code The numbers indicated when you hear the long beep are the error code Error codes and descript...

Страница 74: ...abnormality 69 C9 Room temperature thermistor or related abnormality 69 Outdoor Unit E1 Outdoor unit PCB abnormality 77 E5 OL activation compressor overload 79 E6 Compressor lock 81 E7 DC fan lock 82...

Страница 75: ...OK Check the power supply voltage Start operation Voltage as rated Error repeats Check the power supply voltage Start operation Voltage as rated Error repeats Error repeats Combination of the indoor a...

Страница 76: ...ontrol During heating operation the indoor heat exchanger temperature is above 65 C Supposed Causes Short circuited air Clogged air filter of the indoor unit Dust accumulation on the indoor heat excha...

Страница 77: ...eration determines abnormal fan motor operation Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap Supposed Causes Power supply voltage...

Страница 78: ...ce the indoor unit PCB control PCB Replace the fan motor Replace the capacitor Replace the indoor unit PCB control PCB Replace the fan motor Replace the indoor unit PCB control PCB Measure the voltage...

Страница 79: ...posed Causes Disconnection of connector Thermistor corresponding to the error code is defective Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 102 C4 Indoor heat exchanger thermistor...

Страница 80: ...onds Opening of the electronic expansion valve D Discharge pipe temperature E target discharge pipe temperature F Refrigerant shortage detection III When the difference of the temperature is smaller t...

Страница 81: ...are or replace the union Check the pipes for improper contact and correct them as required Replace the cracked pipe Check the power transistor harness for loosening Correct the connection as required...

Страница 82: ...t is below 180 V The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection An over voltage signal is fed from the over voltage detection circuit...

Страница 83: ...S YES YES Reconnect the harness Check the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power a...

Страница 84: ...ormal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage is not as specified Reductio...

Страница 85: ...it connection wires Replace the outdoor unit PCB main PCB Replace the connection wires between the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there a...

Страница 86: ...connected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R20435 Caution NO YES YES NO Match the...

Страница 87: ...K X S25 35E2V1B RK X S25 35G2V1B RK X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B RXS35K2V1B RXS25 35L2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts...

Страница 88: ...OFF Blink Check the voltage of the connection wires on the indoor terminal board between No 1 and No 2 NO YES Replace the connection wires between the indoor unit and outdoor unit Normal YES R22975 NO...

Страница 89: ...wn Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe thermistor Disconnection of connector...

Страница 90: ...ectronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Replace the four way valve or the coil Replace the outdoor unit PCB main PCB Di...

Страница 91: ...o P 104 Check No 15 Refer to P 106 Turn off the power Disconnect the harnesses U V and W R21067 Caution NO YES YES NO NO YES NO YES Check No 15 Check with the inverter analyzer Turn off the power and...

Страница 92: ...ck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 108 FU2 R21669 Caution YES YES NO YES NO NO YES NO NO Turn on the power Rotate the fan YES Check No...

Страница 93: ...Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrup...

Страница 94: ...owing condition continues over 10 minutes after operating for 5 minutes Cooling Dry A B 5 C Heating B A 5 C A Room thermistor temperature B Indoor heat exchanger temperature If the error repeats the s...

Страница 95: ...dust clogged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R20405 Refrigerant shortage Water mixed Stop...

Страница 96: ...tage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 102 Check No 12 Refer to P 104 Check No 14 Refer to P 10...

Страница 97: ...door unit PCB Troubleshooting Check No 01 Refer to P 102 Check No 12 Refer to P 104 Check No 17 Refer to P 109 Check No 18 Refer to P 109 Check No 19 Refer to P 110 R20418 Caution Replace the outdoor...

Страница 98: ...ltage before compressor start up is below 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting...

Страница 99: ...the position detection circuit Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Power...

Страница 100: ...Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connect...

Страница 101: ...pressor running frequency and the input current Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Suppo...

Страница 102: ...mperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective Defective heat exchange...

Страница 103: ...than the heat exchanger temperature Replace the defective thermistor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Radiatio...

Страница 104: ...he error is cleared when the radiation fin temperature drops below B C To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when the ra...

Страница 105: ...S Radiation fin thermistor NO NO YES NO YES Turn off the power Then turn on the power to restart the system Check the radiation fin temperature Above A C Thermistor as specified in its characteristic...

Страница 106: ...the power Then turn on the power to restart the system Check the radiation fin temperature Radiation fin dirty Check No 19 Check the outdoor fan Error again or outdoor fan activated Replace the outdoo...

Страница 107: ...hen the radiation fin temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective out...

Страница 108: ...C Thermistor as specified in its characteristic chart Check No 01 Check the thermistor resistance value Error displayed again Has the PCB been replaced Replace the radiation fin thermistor Replace the...

Страница 109: ...ectors or parts may be damaged R22540 NO NG OK NO YES Check the radiation fin temperature NO YES YES Above A C Check No 19 Check the outdoor fan Error displayed again Has the PCB been replaced Check i...

Страница 110: ...rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is s...

Страница 111: ...k the power supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary drop of power supply voltage Compressor overload...

Страница 112: ...on a PCB remove the PCB from the control PCB to measure the resistance When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance Ther...

Страница 113: ...tive PCB Replace the PCB control PCB If NG in step 2 Defective Hall IC Replace the fan motor If OK in both steps 1 and 2 Replace the PCB control PCB 5 3 Power Supply Waveforms Check Check No 11 Measur...

Страница 114: ...the above step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 1 6 3 6 2 5 4 5 between the pins 1 6 2 6 3 6 4 6 for the harness 5P model...

Страница 115: ...coil Cooling Dry Not energized Heating Energized Replace the outdoor unit PCB main PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 S80 voltag...

Страница 116: ...capacitor drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possi...

Страница 117: ...ressor is defective Replace the compressor 2 If the LEDs are not lit uniformly check the power module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The powe...

Страница 118: ...and When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB main PCB If NG in step 4 Defective Hall IC Replace the outdoor fa...

Страница 119: ...dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Check the outdoor temperature The outdoor temperature should be with...

Страница 120: ...the table below If the resistance is or less than 1 k short circuit occurs on the main circuit RK X S25 35E2V1B R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system Rec...

Страница 121: ...SiBE05 722EE Check Service Diagnosis 111 RK X S25 35G2V1B RK X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B RXS35K2V1B RXS25 35L2V1B R19665 4 3 2 1 Multimeter R19666 Multimeter 1 2 3 4...

Страница 122: ...r press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter Evaluate the me...

Страница 123: ...SiBE05 722EE Check Service Diagnosis 113 RK X S25 35E2V1B RK X S25 35G2V1B R22979 Pin 35 Pin 34 W Pin 33 V Pin 32 U Pin 31 R23023 Pin 20 Pin 21 U Pin 22 V Pin 23 W Pin 24 Power module...

Страница 124: ...BE05 722EE 114 Service Diagnosis RK X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B RXS35K2V1B RXS25 35L2V1B RXS25 35L3V1B R20794 V U W DC Power module DC Power module Pin 24 Pin 23 U Pin 22 V Pin 21 W Pin 20...

Страница 125: ...ng 116 1 1 Pump Down Operation 116 1 2 Forced Cooling Operation 116 2 Trial Operation 118 3 Field Settings 119 3 1 When 2 Units are Installed in 1 Room 119 3 2 Facility Setting Jumper cooling at low o...

Страница 126: ...outdoor unit is not operating Start The forced cooling operation starts when any of the following conditions is fulfilled 1 Press the forced cooling operation ON OFF button SW1 on the indoor unit for...

Страница 127: ...X S25 35G2V1B9 RXS25 35J2V1B RXS25K3V1B RXS35K2V1B RXS25 35L2V1B Caution When pressing the button do not touch the terminal board It has a high voltage and may cause electric shock ON OFF button SW1...

Страница 128: ...emperature 30 C Trial operation may be disabled in either operation mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 C 28 C in cooling...

Страница 129: ...et for different addresses Both the indoor unit PCB and the wireless remote controller need alteration Indoor Unit PCB Cut the address setting jumper JA on the control PCB Caution Replace the PCB if y...

Страница 130: ...t a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Caution 1 If the outdoor unit is installed where the outdoor heat exchanger of the uni...

Страница 131: ...ve only in cooling operation JB Fan speed setting Remote controller setting The fan stops Power failure recovery function JC Auto restart The unit does not resume operation after recovering from a pow...

Страница 132: ...bridge Detail 1 Wipe off the old silicone grease completely 2 Apply the silicone grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diod...

Страница 133: ...SiBE05 722EE Appendix 123 Part 8 Appendix 1 Piping Diagrams 124 1 1 Indoor Unit 124 1 2 Outdoor Unit 125 2 Wiring Diagrams 128 2 1 Indoor Unit 128 2 2 Outdoor Unit 129...

Страница 134: ...ANT FLOW COOLING INDOOR UNIT 6 4CuT SIROCCO FAN 9 5CuT FAN MOTOR M HEAT EXCHANGER THERMISTOR ON HEAT EXCH FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT 4D034012E FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT INDO...

Страница 135: ...LTER MOTOR OPERATED VALVE MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE FOUR WAY VALVE NORMALLY OFF DISCHARGE PIPE THERMISTOR 3D047318G OUTDOOR UNIT HEAT EXCHANGER 7 0 CuT 7 0 CuT 9 5 CuT EV 4...

Страница 136: ...WITH FILTER MUFFLER WITH FILTER LIQUID STOP VALVE FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT GAS STOP VALVE DISCHARGE PIPE THERMISTOR FOURWAY VALVE ON HEATING 3D047316S OUTDOOR UNIT HEAT EXCHANGER 7 0Cu...

Страница 137: ...rge pipe thermistor Outdoor air temperature thermistor Liquid stop valve Gas stop valve Muffler Field piping Field piping 6 4CuT 9 5CuT 3D091995A Outdoor unit Outdoor air temperature thermistor Heat e...

Страница 138: ...UTDOOR GRN YLW FIELD WIRING C70 PCB4 H3 S1W HA H4 H5 H6 S7 S21 S27 S26 INDOOR S31 S32 S6 t t X11A X21A R2T R1T M M 1 M1F t M1S 100 C SIGNAL RECEIVER WIRELESS REMOTE CONTROLLER TRANSMISSION CIRCUIT Fu...

Страница 139: ...RED BRN BLU GRY BLK BLU WHT RED RED BLU BRN YLW ORG WHT YLW 3 1 t t t S80 Y1R Z1C M V 1 M N 2 Y1E Q1L R1T M1F R2T R3T W U OUTDOOR DISCHARGE CONDENSER M1C C74 C75 C94 C95 C100 DB1 DB2 FU1 FU2 FU3 IC11...

Страница 140: ...LK BLK BLK BLU RED BRN RED BRN WHT YLW WHT ORG BLK BLK ORG Y1R BLK GRY 1 3 t t t Z1C M S80 M V 1 N 4 M1F R1T R2T R3T Y1E Q1L W U OUTDOOR DISCHARGE M1C CONDENSER IN CASE OF COOLING ONLY TYPE IN CASE OF...

Страница 141: ...BLU BLU BLK BLK BLK BLK BLK BLK ORG BRN RED BLU BLK ORG WHT YLW WHT YLW 4 1 2 1 t t t 3 1 Y1R S80 X12A M S110 V Q1L U R1T R2T R3T W SW1 BLK BLK Y1E OUTDOOR DISCHARGE M1F M1C PCB3 CONDENSER 1 REFER TO...

Страница 142: ...MRCW C400 1 3 HL1 HN1 MR30 2 Outdoor Outdoor Condenser Discharge Indoor 3 V V FU1 FU2 FU3 L1 L1R HL1 HN1 E1 E2 HR1 HR2 X12A S MR30_A MR30_B R1T R2T R3T S20 S30 S40 S50 S71 S80 S90 V2 V3 V150 C400 C405...

Страница 143: ...l addition RK X S25 35G2V1B RK X S25 35G2V1B9 01 2011 SiBE05 722_B Model addition RXS25 35J2V1B 12 2012 SiBE05 722_C Model addition RXS25K3V1B RXS35K2V1B 01 2014 SiBE05 722ED Model addition FLXS35BAVM...

Страница 144: ...es supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and access...

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Содержание Super Multi NX FLKS25BAVMB

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