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Daikin FTKS20CVMB(9), Service Manual

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Daikin FTKS20CVMB(9) Service Manual Download Page 112

SiENBE04-512A

Troubleshooting

Service Diagnosis

103

4.3

Freeze-up Protection Control or High Pressure Control

Remote Control 
Display

A5

Method of 
Malfunction 
Detection

„

High pressure control (heat pump model only)

During heating operations, the temperature detected by the indoor heat exchanger 
thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) 

„

Freeze-up protection control (operation halt) is activated during cooling operation according 
to the temperature detected by the indoor unit heat exchanger thermistor.

Malfunction 
Decision 
Conditions

„

High pressure control

During heating operations, the temperature detected by the indoor heat exchanger 
thermistor is above 65°C

„

Freeze-up protection
When the indoor unit heat exchanger temperature is below 0°C during cooling operation.

Supposed 
Causes

„

Operation halt due to clogged air filter of the indoor unit.

„

Operation halt due to dust accumulation on the indoor unit heat exchanger.

„

Operation halt due to short-circuit.

„

Detection error due to faulty indoor unit heat exchanger thermistor.

„

Detection error due to faulty indoor unit PCB.

SiENBE04-512A.book  Page 103  Friday, October 5, 2007  1:49 PM

Summary of Contents for FTKS20CVMB(9)

Page 1: ...SiENBE04 512A Service Manual Inverter Pair Wall Mounted Type C Series D Series...

Page 2: ...MB7 RKH25CVMB7 ARKH25CVMB7 ARKS25CVMB 9 RN25CVMB7 RKH35CVMB7 ARKH35CVMB7 ARKS35CVMB 9 RN35CVMB7 ARKS20C2VMB ARKS25C2VMB ARKS35C2VMB zHeat Pump Indoor Unit FTXS20CVMB 9 ATXS20DVMB ATXS20CVMB 9 FTYN20CV...

Page 3: ...Dual Flaps Wide Angle Louvres and Auto Swing 38 1 3 Fan Speed Control for Indoor Units 39 1 4 Programme Dry Function 40 1 5 Automatic Operation 41 1 6 NIGHT SET Mode 42 1 7 INTELLIGENT EYE 43 1 8 HOME...

Page 4: ...01 4 1 Error Codes and Description 101 4 2 Indoor Unit PCB Abnormality 102 4 3 Freeze up Protection Control or High Pressure Control 103 4 4 Fan Motor AC Motor or Related Abnormality 105 4 5 Thermisto...

Page 5: ...3 2 5 Removal of Four Way Valve 175 2 6 Removal of Compressor 177 2 7 Removal of PCB 179 3 Outdoor Unit RK X H C ARK X H C R Y N C 182 3 1 Removal of External Panels 182 3 2 Removal of Bell Mouth 185...

Page 6: ...plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipm...

Page 7: ...the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation...

Page 8: ...ot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harml...

Page 9: ...ng and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resista...

Page 10: ...SiENBE04 512A List of Functions 1 Part 1 List of Functions 1 List of Functions 2 1 1 High Grade Models 2 1 2 Standard Grade Models 4 1 3 Non lnverter Models 7...

Page 11: ...ability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H2 H2 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outd...

Page 12: ...to Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H2 H2 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoor Heat Exchanger Co...

Page 13: ...Reliability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of...

Page 14: ...liability Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Ou...

Page 15: ...ility Durability Auto Restart after Power Failure 3 D Airflow Self Diagnosis Digital LED Display H1 H1 Comfort Airflow Mode Wiring Error Check 3 Step Airflow H P Only Anticorrosion Treatment of Outdoo...

Page 16: ...ility Auto Restart after Power Failure Horizontal Auto Swing Right and Left Self Diagnosis Digital LED Display H H 3 D Airflow Wiring Error Check Comfort Airflow Mode Anticorrosion Treatment of Outdoo...

Page 17: ...List of Functions SiENBE04 512A 8 List of Functions...

Page 18: ...SiENBE04 512A Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Cooling Only 10 1 2 Heat Pump 16...

Page 19: ...al Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power F...

Page 20: ...ovable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Tempe...

Page 21: ...Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40...

Page 22: ...ownward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Facto...

Page 23: ...Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6...

Page 24: ...ew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 Power Factor 96 6 96 6 96 6 Temperature Control Microcomputer Control Microcomputer C...

Page 25: ...t Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated...

Page 26: ...ntrol Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomput...

Page 27: ...Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Po...

Page 28: ...ontrol Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcompu...

Page 29: ...Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0...

Page 30: ...o Air Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature C...

Page 31: ...ontrol Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consum...

Page 32: ...ir Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Cont...

Page 33: ...l Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption...

Page 34: ...Direction Control Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control...

Page 35: ...Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 0 18 0 18 Power Consumption Rated W 40 40 40 40 Power Factor 96 6 96 6 96 6 96 6 Temperature Control Microcomput...

Page 36: ...ir Filter Removable Washable Mildew Proof Running Current Rated A 0 18 0 18 Power Consumption Rated W 40 40 Power Factor 96 6 96 6 Temperature Control Microcomputer Control Dimensions H W D mm 273 784...

Page 37: ...Specifications SiENBE04 512A 28 Specifications...

Page 38: ...rd Connector Wiring Diagram 29 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 30 1 1 Indoor Unit 30 1 2 Outdoor Unit ARK X S C 32 1 3 Outdoor Un...

Page 39: ...gnal receiver PCB 6 S27 S36 Connector for control PCB 7 S32 Connector for heat exchanger thermistor 8 S35 Connector for INTELLIGENT EYE sensor PCB Inverter models only 1 V1 Varistor 2 JA Address setti...

Page 40: ...rcuit Board Connector Wiring Diagram 31 PCB Detail PCB 1 Control PCB PCB 2 Signal Receiver PCB PCB 3 INTELLIGENT EYE sensor PCB Inverter models only Control PCB V1 Fu1 S1 SW7 LED1 LED2 LED3 RTH1 S27 S...

Page 41: ...ector for electronic expansion valve coil 4 S30 Connector for compressor motor 5 S40 Connector for overload protector 6 S70 Connector for fan motor 7 S80 Connector for four way valve coil 8 S90 Connec...

Page 42: ...nnector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 33 PCB Detail PCB 1 Control PCB outdoor unit PCB 2 Filter PCB FU2 3 15A S30 HN3 HC3 S70 J8 HC4 R3322 S40 LED A S90 HL3 FU1 3 15A V...

Page 43: ...her designations PCB Detail Control PCB outdoor unit 1 S20 Connector for electronic expansion valve 2 S70 Connector for fan motor 3 S80 Connector for four way valve 4 S90 Connector for thermistors out...

Page 44: ...s 47 2 Function of Thermistor 48 2 1 Heat Pump Model 48 2 2 Cooling Only Model 49 3 Control Specification 50 3 1 Mode Hierarchy 50 3 2 Frequency Control 51 3 3 Controls at Mode Changing Start up 53 3...

Page 45: ...ns the conversion principle Drawing of Inverter The following drawing shows a schematic view of the inverter principle Phase Description 1 The supplied AC power source is converted into the DC power s...

Page 46: ...o air condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at lo...

Page 47: ...resses the warm air above the floor to reach the entire room Cooling Mode During cooling mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room Wide...

Page 48: ...peration fan operate H tap 50 90 rpm 2 Fan stops during defrost operation Automatic Air Flow Control for Heating The following drawing explains the principle for fan speed control for heating Automati...

Page 49: ...set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Ro...

Page 50: ...setting temperature plus correction value correction value cooling 0 deg heating 2 deg 3 Operation ON OFF point and mode switching point are as follows 1 Heating Cooling switching point Room temperatu...

Page 51: ...conomical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Cooling Operation Heating Operat...

Page 52: ...crocomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature sifted 2 C from the set temperature Cooling 2 C higher Dry 1 C...

Page 53: ...tes so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperatu...

Page 54: ...omes effective The HOME LEAVE button is ineffective in dry mode and fan mode 2 Details of Function A mark representing HOME LEAVE is indicated on the liquid crystal display of the remote control The i...

Page 55: ...period of twenty minutes Ex Powerful operation in cooling mode Operation mode Fan speed Target set temperature COOL H tap 90 rpm 18 C DRY Dry rotating speed 50 rpm Normally targeted temperature in dry...

Page 56: ...lter with Photocatalytic Deodorizing Function This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit Combining the two filters in this wa...

Page 57: ...essor rises abnormally the operating frequency drops or the operation halts 2 The discharge pipe thermistor is used for detecting disconnection of the discharge thermistor C Indoor Heat Exchanger Ther...

Page 58: ...ontrolling temperature of the discharge pipe If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the operati...

Page 59: ...nd cooling including drying Note Unless specified otherwise an indoor dry operation command must be regarded as cooling operation Air conditioner control mode Forced operating mode Forced cooling for...

Page 60: ...per limits of the following functions Compressor protection input current discharge pipes peak cutting freeze up protection defrost 3 Determine lower limit frequency Set a maximum value as an lower li...

Page 61: ...volume air flow rate and other factors PI Control Determine Frequency Up Down by D Signal 1 P control Calculate D value in each sampling time 20 seconds and adjust the frequency according to its diffe...

Page 62: ...y valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 160 sec after unit operation is stopped 3 3 3 Four Way Valve Operation Compensation...

Page 63: ...rature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Detail Divide the Zone Management within the Zones FCG 3 FCG 2 FCG 1 TCG 1...

Page 64: ...nt drooping and stop value according to the outdoor air temperature 1 In case the operation mode is cooling The current droops when outdoor air temperature becomes higher than a certain level model by...

Page 65: ...control when drooping function is working 5 Fan control when forced operation 6 Fan control in low noise mode 7 Fan control during heating operation 8 Fan control in the quiet mode 9 Fan control in t...

Page 66: ...ion 6 minutes after the compressor is started and more than 28 minutes of accumulated time pass since the start of the operation or ending the defrosting Conditions for Canceling Defrost The judgment...

Page 67: ...Discharge pipe temperature control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control R2833 Fully closed when power is turned ON Op...

Page 68: ...Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If any is disconnec...

Page 69: ...ge pipe temperature from the indoor and outdoor heat exchanger temperature and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperat...

Page 70: ...are three ways of control to detect insufficient gas I Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it...

Page 71: ...voltage is detected each time equipment operation starts Cooling room temperature indoor heat exchanger temperature 4 0 C outdoor heat exchanger temperature outdoor temperature 4 0 C Heating indoor he...

Page 72: ...door temperature rises the operation will start again Caution 1 If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent...

Page 73: ...Control Specification SiENBE04 512A 64 Function and Control...

Page 74: ...2 2 Names of parts 69 2 3 Preparation before Operation 72 2 4 AUTO DRY COOL HEAT FAN Operation 75 2 5 Adjusting the Air Flow Direction 77 2 6 POWERFUL Operation 79 2 7 OUTDOOR UNIT SILENT Operation 80...

Page 75: ...lever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the...

Page 76: ...c shocks fire etc For repairs and reinstallation consult your Daikin dealer for advice and information The refrigerant used in the air conditioner is safe Although leaks should not occur if for some r...

Page 77: ...use check the unit stand and fittings for damage Do not touch the air inlet and aluminum fins of outdoor unit It may cause injury The appliance is not intended for use by young children or infirm pers...

Page 78: ...SiENBE04 512A Instruction System Configuration 69 2 2 Names of Parts Indoor Unit 1 3 4 5 6 7 9 10 11 2 R ON OFF 14 15 16 8 12 13...

Page 79: ...des The louvers are inside of the air outlet Page 13 12 Indoor Unit ON OFF switch Push this switch once to start operation Push once again to stop it the operation mode refers to the following table T...

Page 80: ...ge 16 4 POWERFUL button POWERFUL operation page 14 5 TEMPERATURE adjustment buttons It changes the temperature setting 6 ON OFF button Press this button once to start operation Press once again to sto...

Page 81: ...ype and replace the two old batteries together When the system is not used for a long time take the batteries out We recommend replacing once a year although if the remote control display begins to fa...

Page 82: ...the unit 2 Fix the holder to a wall a pillar etc with the screws supplied with the holder 3 Place the remote control in the remote control holder About remote control Never expose the remote control t...

Page 83: ...even while it is not operating If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditio...

Page 84: ...ces the mode setting in sequence AUTO DRY COOL HEAT FAN ATKS ATXS 2 Press ON OFF button The OPERATION lamp lights up To stop operation 3 Press ON OFF button again Then OPERATION lamp goes off To chang...

Page 85: ...ll parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that...

Page 86: ...direction to increase your comfort To adjust the horizontal blades flaps 1 Press SWING button is displayed on the LCD 1 When the flaps have reached the desired position press SWING button once more Th...

Page 87: ...e depends on the operation mode See the figure ATTENTION Always use a remote control to adjust the flaps angle If you attempt to move it forcibly with hand when it is swinging the mechanism may be bro...

Page 88: ...OWERFUL operation there are some functions which are not available is displayed on the LCD To cancel POWERFUL operation 2 Press POWERFUL button again disappears from the LCD TIMER ON CANCEL OFF 1 2 No...

Page 89: ...UNIT SILENT operation 2 Press SILENT button again disappears from the LCD Note on OUTDOOR UNIT SILENT operation This function is available in COOL HEAT and AUTO modes This is not available in FAN and...

Page 90: ...LEAVE operation When using HOME LEAVE operation for the first time please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate 1 Press HO...

Page 91: ...ou will be welcomed by a comfortably air conditioned room Push the HOME LEAVE Operation button again and the air conditioner will adjust capacity to the set temperature for normal operation Set the un...

Page 92: ...1 Press SENSOR button is displayed on the LCD To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD TEMP ON OFF POWERFUL MODE FAN SWING SENSOR ECONO MOLDPROOF TIM...

Page 93: ...may not detect moving objects further than 5m away Check the application range Sensor detection sensitivity changes according to indoor unit location the speed of passersby temperature range etc The s...

Page 94: ...time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press OFF TIMER button again The TIMER lamp lights up To cancel the OFF TIMER operation 4 Press CANCEL button The TI...

Page 95: ...by 10 minutes Holding down either button changes the setting rapidly 3 Press ON TIMER button again The TIMER lamp lights up To cancel the ON TIMER operation 4 Press CANCEL button The TIMER lamp goes o...

Page 96: ...th water dry it with cloth dry it up in the shade after washing 4 Attach the front panel Set the 3 keys of the front panel into the slots and push them in all the way Close the front panel slowly and...

Page 97: ...them with neutral detergent thinned with lukewarm water then dry them up in the shade It is recommended to clean the air filters every two weeks Air purifying Filter with photocatalytic deodorizing fu...

Page 98: ...he inside Press MODE button and select FAN operation Press ON OFF button and start operation 2 After operation stops turn off the breaker for the room air conditioner 3 Clean the air filters and set t...

Page 99: ...m when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit T...

Page 100: ...losed Are the air flow rate and the air direction set appropriately Is the unit set to the INTELLIGENT EYE mode Operation stops suddenly OPERATION lamp flashes Are the air filters clean Is there anyth...

Page 101: ...poor performance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air...

Page 102: ...UP PROTECTOR A6 FAN MOTOR FAULT C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR C9 FAULTY SUCTION AIR TEMPERATURE SENSOR OUTDOOR UNIT EA COOLING HEATING SWITCHING ERROR E5 OL STARTED E6 FAULTY COMPRESSOR...

Page 103: ...Instruction SiENBE04 512A 94 System Configuration...

Page 104: ...ror between Indoor and Outdoor Unit 107 4 7 OL Activation Compressor Overload 108 4 8 Compressor Lock 109 4 9 DC Fan Lock 110 4 10 Input Over Current Detection 111 4 11 Four Way Valve Abnormality 112...

Page 105: ...uipment operation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of Operation...

Page 106: ...higher only for heat pump model and cooling operation cannot be used when the outdoor air temperature is below 10 C Note Diagnosis with remote control indication 101 Equipment operates but does not c...

Page 107: ...uced The code indication changes in the sequence shown below and notifies with a long beep Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display h...

Page 108: ...2 Press the TEMP button Press TEMPs or TEMPt and change the digit until you hear the sound of beep or pi pi 3 Diagnose by the sound H pi The number of tens does not accord with the error code H pi pi...

Page 109: ...both numbers of tens and units do not accord with the error code H pi pi The number of tens accords with the error code H beep The both numbers of tens and units accord with the error code 7 Determine...

Page 110: ...m temperature thermistor abnormality 106 Outdoor Unit E5H OL activation compressor overload 108 E6H Compressor lock 109 E7 DC fan lock 110 E8 Input over current detection 111 EA Four way valve abnorma...

Page 111: ...ss detection in approximately 10 continuous seconds Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Note Connector Nos vary depending on models Connector connection...

Page 112: ...according to the temperature detected by the indoor unit heat exchanger thermistor Malfunction Decision Conditions High pressure control During heating operations the temperature detected by the indoo...

Page 113: ...cumulation on the indoor unit heat exchanger YES YES Is there any short circuit Is it very dirty Is it very dirty Does it conform to the thermistor characteristic chart NO Provide sufficient air passa...

Page 114: ...due to faulty indoor unit PCB Troubleshooting Check No 16 Refer to P 137 Rotate the fan by hand Check No 16 Check Hall IC Operate the fan Does it rotate NO Does it rotate smoothly Is there an output I...

Page 115: ...ss than 120 ohms or below about 50 C more than 1 860 kohms Note The values vary slightly in some models Supposed Causes Faulty connector connection Faulty thermistor Faulty PCB Troubleshooting Check N...

Page 116: ...al transmission error due to breaking of wire in the connection wires between the indoor and outdoor units wire No 2 Troubleshooting Check No 10 Refer to P 135 Check the outdoor unit s LED A Check the...

Page 117: ...bleshooting Check No 4 Refer to P 130 Check No 5 Refer to P 131 Check No 6 Refer to P 132 Check No 11 Refer to P 135 Insert the thermistor in position Replace the discharge pipe thermistor Replace the...

Page 118: ...pposed Causes Compressor locked Compressor harness disconnected Troubleshooting Note If the model doesn t have SPM replace the outdoor unit PCB Turn off the power Disconnect the harnesses U V and W In...

Page 119: ...for about 5 minutes normal Supposed Causes Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Foreign matters stuck in the fan Troubleshooting Check No...

Page 120: ...ave SPM replace the outdoor unit PCB Replace the outdoor unit PCB Inverter checker Part No 1225477 Correct the power supply or replace the SPM Replace the outdoor unit PCB R2952 Caution Be sure to tur...

Page 121: ...cked to see if they function within their normal ranges in the operating mode Malfunction Decision Conditions A following condition continues over 10 minute after operating 5 minutes Cooling dry opera...

Page 122: ...off power switch before connect or disconnect connector or parts damage may be occurred Four way valve coil disconnected loose YES YES NO Functioning NO Check No 11 Check the refrigerant line Malfunct...

Page 123: ...door air temperature thermistor defective Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Troubleshooting Check No 4 Refer to P 130...

Page 124: ...g sensed by the heat exchanger thermistor exceeds the limit Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 65 C The error is c...

Page 125: ...ir the connector or fan motor lead wires Replace the heat exchanger thermistor Replace PCB Replace the electronic expansion valve or coil Replace the PCB Change the air outlet grille position Change t...

Page 126: ...disconnected Compressor itself defective Outdoor unit PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check No 13 Refer to P 136 Replace the outdoor unit PCB Replac...

Page 127: ...ision Conditions The compressor running frequency is below 52 Hz The input current is also below 0 5 A If this error repeats 4 times the system will be shut down The error counter will reset itself if...

Page 128: ...ature Malfunction Decision Conditions The thermistor input is above 4 96 V or below 0 04 V with the power on Error J3 is judged if the discharge pipe thermistor temperature is smaller than the condens...

Page 129: ...at exchanger thermistor Outdoor air thermistor Replace the following thermistor Indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R4097 Caution Be sure to turn...

Page 130: ...n thermistor with the compressor off Malfunction Decision Conditions With the compressor off the radiation fin temperature is above 80 C 90 C Reset is made when the temperature drops below 70 C 80 C v...

Page 131: ...off power switch before connect or disconnect connector or parts damage may be occurred Error again or outdoor unit fan activated YES Fin thermistor NO Slightly dirty Check No 9 Check the outdoor unit...

Page 132: ...perature with the compressor on is above 90 C 100 C for A RK X H R Y N models If a radiation fin temperature rise takes place 4 times successively the system will be shut down The error counter will r...

Page 133: ...sistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R4017 Caution Be sure to turn off power switch before connect or disconn...

Page 134: ...s running An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 255 times Clearing condition Continuo...

Page 135: ...akage between compressor s coil phases NO YES Normal YES NO Any LED off Turn off the power and turn it on again to get the system started See if the same error occurs Turn off the power and disconnect...

Page 136: ...el to model Gas shortage detection II If a gas shortage error takes place 4 times successively the system will be shut down The error counter will reset itself if this or any other error does not occu...

Page 137: ...nit heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Procedure complete R3318 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be...

Page 138: ...Continuous run for about 10 minutes normal Supposed Causes Supply voltage not as specified Over voltage detection circuit defective PAM control part s defective Troubleshooting Note If the model does...

Page 139: ...ity using a tester Check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 If there is no conductivity between the pins the EV coil is faulty 4 If no EV generates latching sound in th...

Page 140: ...unit PCB Replace the four way valve coil Replace the four way valve R3047 NO YES YES Four way valve coil resistance at 3k 0 5k NO S80 voltage at DC 180 220 V with compressor on Fig 1 Disconnect the f...

Page 141: ...tance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 20k B 3950 Temperature C 20 211 0 k 15 150 1...

Page 142: ...by the outdoor unit The outside air temperature shall be 43 C or lower Check the allowable dimensions of the air suction and discharge area Is the air flow blocked by obstacles or winds blowing in the...

Page 143: ...functioning Go to Check No 15 Check the fan motor lead wire connector for secure connection Abnormal YES NO NO Continuity Are the resistance at connector leads 1 red black 2 white black Check the fan...

Page 144: ...aveform disturbance near the zero cross sections circled in Fig 2 5 1 8 Inverter Units Refrigerant System Check Check No 11 Fig 1 Fig 2 Refrigerant system check Check for gas leaks See the section on...

Page 145: ...wer off and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor w...

Page 146: ...connector connected check the following Output voltage of about 5 V between pins 1 and 3 Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 faulty PCB Replace the...

Page 147: ...Check SiENBE04 512A 138 Service Diagnosis...

Page 148: ...Panels and Fan Motor 162 2 2 Removal of Electrical Box 169 2 3 Removal of Reactor and Partition Plate 171 2 4 Removal of Sound Blanket 173 2 5 Removal of Four Way Valve 175 2 6 Removal of Compressor 1...

Page 149: ...econds a forced cooling operation will be carried out for approx 15 minutes 2 Removing air filters 1 Pull protrusions on left and right sides of panel with fingers and open front grille all the way 2...

Page 150: ...nit s panel and open up the panel to the position higher than it will stop Support the front panel by one hand while remove the rotation axis at the upper center by the other hand And pull out the fro...

Page 151: ...Indoor Unit SiENBE04 512A 142 Removal Procedure 3 When restoring the air filter make sure that the projection parts on the panel are in the guide groove and then shut the panel Step Procedure Points...

Page 152: ...re to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Opening and closing of service cover 1 Remove a service cover mounting screw Open s...

Page 153: ...ing models are not provided 2 Disengage the two hooks on the upper part In case that the hooks are not pressed from above remove the front panel and then remove the grille while pushing the hook throu...

Page 154: ...t Removal Procedure 145 3 The front grille can be removed in a manner to pull out the upper part forward and lift up the lower part When restoring the grille Make sure whether each hook is set as it w...

Page 155: ...after turning off all power supplies before disassembling work Step Procedure Points 1 Remove horizontal blade 1 Lift horizontal blade to open position Screw stoppers inside the flap which were equip...

Page 156: ...de to the tip while rotating it 2 Restore the two fixed parts of the horizontal blade onto the hook 2 Removal of vertical blade 1 Disengage the vertical blade s joint from the fixed plate 2 Remove the...

Page 157: ...2 Disconnect connectors S1 and S7 of fan motor Pay attention to the direction of the retainer of the thermistor so that the retainer will not touch the harness same as the existing models 3 Disconnect...

Page 158: ...512A Indoor Unit Removal Procedure 149 5 Remove a screw on the terminal strip The switch box can be removed instead of disengaging the terminal strip 6 Remove a screw on the switch box Step Procedure...

Page 159: ...Indoor Unit SiENBE04 512A 150 Removal Procedure 7 Pull up the switch box forward to remove A hook is provided on the behind Step Procedure Points...

Page 160: ...the shelter 2 Disengage the front plate of the switch box Disengage the knobs by pushing the two hooks at the top and the bottom 3 Sliding to the left the front part of the switch box can be removed S...

Page 161: ...obs on the back of the display PCB LED3 and Intelligent eye sensor PCB are only for inverter models 5 Display PCB Step Procedure Points PC Board R2538 Knob R2539 Intelligent eye sensor PCB Thermistor...

Page 162: ...ve swing motor assembly remove two screws Manual adjusting for the vertical blades Provide a supporter so that the joint link will not drop off in case the horizontal blade assembly is removed Step Pr...

Page 163: ...refrigerating cycle Mixing of air or other gas causes abnormal temperature rise in refrigerating cycle and this results in pipe rupture or personal injuries Pay attention so that the residual drain wi...

Page 164: ...formation 6 Disengage hooks located right and left side and pull heat exchanger forward The hooks are symmetrically placed in the right and the left Lifting the heat exchanger slightly upward to the r...

Page 165: ...2A 156 Removal Procedure 7 Lift and remove heat exchanger Caution When removing or re installing heat exchanger be sure to wear protective gloves or wrap heat exchanger with cloths Fins can cut finger...

Page 166: ...re disassembling work Step Procedure Points 1 Disconnect drain hose The drain pan is integrated with the bottom plate 2 Pull out the drain plug in the left on the drain pan by hand 3 Insert the drain...

Page 167: ...of Fan Rotor and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove heat exchanger 1 To remove...

Page 168: ...SiENBE04 512A Indoor Unit Removal Procedure 159 2 Disengage hook 3 Loosen the hexagon head set screw on the fan rotor Step Procedure Points Hook R2558...

Page 169: ...Indoor Unit SiENBE04 512A 160 Removal Procedure 4 Remove the motor and fan rotor 5 Remove a screw on the left side panel Step Procedure Points Disengage a hook from the backward R2562...

Page 170: ...6 Disengage a hook from the backward 7 Since the fan bearing is made of rubber push it strongly off from the inside The bearing can be removed just as the left side plate is attached with Step Proced...

Page 171: ...upplies before disassembling work Step Procedure Points 1 Features Take care not to cut your finger by the fins of the heat exchanger The stop valve cover is united with the shelter When reassembling...

Page 172: ...crews front right left and lift the top panel 2 Remove the drip proof plate 3 Disconnect the connector for fan motor S70 The fan motor is united with the front panel 4 Loosen the 5 screws of the front...

Page 173: ...motor is united with the front panel 3 Remove the fan motor The screw has reverse winding 1 Unscrew the washer fitted nut M10 of the propeller fan with a spanner 2 Remove the propeller fan Align mark...

Page 174: ...bell mouth to undo the hooks Remove the bell mouth 4 Loosen the fixing hooks and release the lead wire Put the lead wire through the back of the motor when reassembling so as not to be entangled with...

Page 175: ...ENBE04 512A 166 Removal Procedure 5 Loosen the 4 screws to remove the fan motor M4 16 DC fan motor 6 Loosen the 2 screws to remove the fan motor fixing frame Step Procedure Points Fan motor R3250 Fan...

Page 176: ...C Removal Procedure 167 4 Remove the right side panel 1 Loosen the 2 screws on the rear side 2 Loosen the 3 screws on the right side 3 Loosen the screw and lift the connection port to remove Step Proc...

Page 177: ...Outdoor Unit ARK X S C SiENBE04 512A 168 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points Hook R3257...

Page 178: ...plies before disassembling work Step Procedure Points Remove the top panel Disconnect the connector for fan motor 1 Remove the electrical box 1 Disconnect the 2 reactor harnesses 2 Disconnect the rela...

Page 179: ...on so as not to lose the clip for thermistor 5 Release the heat exchanger thermistor Pay attention so as not to lose the clip 6 Lift and remove the electrical box Step Procedure Points Discharge pipe...

Page 180: ...sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the outer panels Remove the electrical box 1 Remove the reactor 1 Loosen th...

Page 181: ...SiENBE04 512A 172 Removal Procedure 2 The partition plate has a hook on the lower side Lift and pull the partition plate to remove When reassembling fit the lower hook into the bottom frame Step Proce...

Page 182: ...before disassembling work Step Procedure Points Remove the outer panels Remove the electrical box 1 Remove the sound blanket 1 Untie the strings and open the sound blanket 2 Lift and remove the sound...

Page 183: ...C SiENBE04 512A 174 Removal Procedure 4 Pull the sound blanket inner out Since the piping ports on the sound blanket are torn easily remove the blanket carefully 5 Pull the sound blanket bottom out S...

Page 184: ...wer supplies before disassembling work Step Procedure Points 1 Remove the peripheries Remove the four way valve and the sheets of putty so as not to burn them 1 Remove the terminal cover Be careful so...

Page 185: ...ube cutter 4 Heat up the brazed part and withdraw the piping with pliers Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to brea...

Page 186: ...not to burn the heat exchanger fin Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately In case of the difficult...

Page 187: ...Outdoor Unit ARK X S C SiENBE04 512A 178 Removal Procedure Step Procedure Points 3 Heat up the brazed part of the suction side and disconnect 4 Lift the compressor up and remove it...

Page 188: ...r turning off all power supplies before disassembling work Step Procedure Points 1 Remove the PCB You can remove the PCB when you disconnect the read wires on the terminal board without removing the e...

Page 189: ...Outdoor Unit ARK X S C SiENBE04 512A 180 Removal Procedure 4 Loosen the 4 screws 5 Undo the 3 hooks on the upper side 6 Lift and pull out the PCB Step Procedure Points Hooks R3290...

Page 190: ...emoval Procedure 181 7 Feature of the PCB S70 fan motor S80 four way valve S90 thermistor outdoor air heat exchanger discharge pipe Step Procedure Points PbF Pb free soldering Glass fuse 3 15A Glass f...

Page 191: ...to turn off all power supplies at least 10 min before disassembling work Step Procedure Points 1 Remove the external panels The top panel is integrated with the front panel 1 The stop valve cover can...

Page 192: ...ooks at 7 positions 2 Remove the 2 screws at the front and the 3 screws at the right side The left side panel and the bell mouth can be removed all at once The top panel can be mounted easily if you m...

Page 193: ...ront The left side panel and the bell mouth can be removed all at once The top panel can be mounted easily if you move it horizontally and put it down Sectional view at the front 5 Dismount the left s...

Page 194: ...ng work Step Procedure Points 1 The bell mouth is attached to the front panel with 2 screws and 4 hooks Dismount the bell mouth from the front panel after removing the 2 screws at the lower side 2 Rem...

Page 195: ...arning Be sure to turn off all power supplies at least 10 min before disassembling work Step Procedure Points 1 To remove the drip proof plate unfasten the hooks at 2 positions 2 The other hooks are u...

Page 196: ...l Procedure 187 3 Peel off the adhesive tape at 2 positions of the insulation sheet For prolonged durability use filament reinforced adhesive tape PVC tape can not be used 4 Remove the insulation shee...

Page 197: ...dure 5 Disconnect the fan motor connector S70 6 The figure shows the wire harness connection around the hook 7 Remove the fan motor lead wire from the groove 8 Disconnect the four way valve connector...

Page 198: ...val Procedure 189 9 Disconnect the electronic expansion valve connector S20 10 Disconnect the thermistor assembly connector for outdoor air heat exchanger discharge pipe S90 11 Disconnect the compress...

Page 199: ...isconnect the faston terminal from the reactor 13 Disconnect the ground wire 14 Disconnect the black white red and green connectors from the power supply terminal board Step Procedure Points ORG BRN R...

Page 200: ...h the slit on the terminal side of the electrical component box after detaching the stop valve cover 15 Dismount the PCB by removing the 2 screws The PCB can not be dismounted unless the radiation fin...

Page 201: ...ation fin from the underneath Be sure to use silicone agent to make a tight contact with the radiation fin Part No of silicone agent 1172698 18 Release the hooks of the PCB 19 Lift up the PCB and then...

Page 202: ...emoval Procedure 193 S20 Electronic expansion valve S70 Fan motor S80 Four way valve S90 Thermistor assembly 21 The figure shows the appearance of the PCB 22 The figure shows the appearance of the ele...

Page 203: ...4 Removal of Electrical Box Procedure Warning Be sure to turn off all power supplies at least 10 min before disassembling work Step Procedure Points 1 The figure shows the electrical box 2 Disconnect...

Page 204: ...H C ARK X H C R Y N C Removal Procedure 195 4 Disconnect the connection wires of the terminal block 5 Remove the 2 screws at the electrical box front and right side 6 Remove the electrical box by lift...

Page 205: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 196 Removal Procedure 7 Release the 2 wire harnesses from the hooks at the back 8 Remove the electrical box Step Procedure Points...

Page 206: ...t least 10 min before disassembling work Step Procedure Points 1 Remove the motor assembly 1 Remove the 2 screws at the lower part of the fan motor assembly 2 The assembly has the hooks at its bottom...

Page 207: ...e careful of the fan fixing nut which is of left hand thread 1 Dismount the propeller fan by removing the washer faced nut with use of an open ended wrench Mount the fan propeller to the fan motor so...

Page 208: ...e back of the motor Be careful not to get the wire caught by the propeller fan 1 Pry up the hook which fixes the lead wire and draw out the lead wire 2 Remove the 2 screws of the fan motor 3 Remove th...

Page 209: ...k Step Procedure Points 1 Remove the right side panel Preparation Remove the electrical box according to the removal of electrical box 1 Dismount the right side plate by removing the screw 2 Remove th...

Page 210: ...R Y N C Removal Procedure 201 4 Remove the right side panel by sliding it up along the 2 hooks at the lower side 5 Unfasten the hook at the top When mounting the right side panel fasten the 3 hooks St...

Page 211: ...rocedure 2 Remove the partition plate 1 To dismount the partition plate remove the 2 screws 2 Unfasten the hook of the lower side of the partition plate from the bottom frame When mounting the partiti...

Page 212: ...SiENBE04 512A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 203 3 Remove the reactor 1 To dismount the reactor remove the screw 2 Slide up the reactor and remove it Step Procedure Points...

Page 213: ...thermistor fixture Remove the discharge pipe thermistor while opening the thermistor fixture 2 To remove the thermistor for heat exchanger cut off the clamp The thermistor for heat exchanger is fixed...

Page 214: ...se the thermistor retaining spring Align the thermistor with the end of the retaining spring 4 Disconnect the thermistor assembly for outdoor air heat exchanger discharge pipe connector S90 Step Proce...

Page 215: ...partition plate according to the removal of partition plate 1 Untie the fixing strap of the sound insulation pad outer shell The slits of the sound insulation pad for piping are apt to break off Pay...

Page 216: ...ENBE04 512A Outdoor Unit RK X H C ARK X H C R Y N C Removal Procedure 207 3 Remove the sound insulation pad top 4 Remove the sound insulation pad under Step Procedure Points Sound insulator under R450...

Page 217: ...4 512A 208 Removal Procedure 5 Open the sound insulation pad inner shell and pull it out The slits of the sound insulation pad for piping are apt to break off Pay attention when removing Step Procedur...

Page 218: ...ep Procedure Points 1 Remove the parts around the compressor Preparation Remove the compressor sound insulation pad according to the removal of compressor sound insulation pad 1 Remove the terminal co...

Page 219: ...mpressor terminal and the nameplate Be careful not to burn the heat exchanger fin Warning The refrigerator oil of the compressor may catch fire Provide wet cloth for prompt extinction in emergency Cau...

Page 220: ...valve should not be heated Keep the valve temperature below 120 C When disconnecting the pipe be careful not to crush it by pliers with undue force If the pipe is hard to disconnect by means of a gas...

Page 221: ...s leaks during work ventilate the room In case the refrigerant gas is exposed to fire it will cause toxic gas Caution From the point of view of environmental protection do not release the refrigerant...

Page 222: ...ickly 2 It is necessary to prevent the gaskets from deterioration due to carbonization of oil in the four way valve or effect of heat Therefore wrap the four way valve body with wet cloth and add wate...

Page 223: ...heated by the gas welding machine Caution From the point of view of environmental protection do not release the refrigerant gas to the atmosphere in repairing the refrigerant circulating system but a...

Page 224: ...igerant gas is exposed to fire it will cause toxic gas Caution Be careful not to get burned by the pipes heated by the gas welding machine Caution From the point of view of environmental protection do...

Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 512A 216 Removal Procedure...

Page 226: ...SiENBE04 512A Others 217 Part 8 Others 1 Others 218 1 1 Test Run from the Remote Control 218 1 2 Jumper Settings 219...

Page 227: ...ng 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordanc...

Page 228: ...arts box 4 Cut the jumper JA on PCB Infrared remote control 1 Slide the front cover and take it off 2 Cut the address jumper J4 1 2 2 Jumper Setting R2871 R4562 PCB JA JB JC 1 2 EXIST CUT ADDRESS Sens...

Page 229: ...Others SiENBE04 512A 220 Others...

Page 230: ...SiENBE04 512A Appendix 221 Part 9 Appendix 1 Piping Diagrams 222 1 1 Indoor Units 222 1 2 Outdoor Units 223 2 Wiring Diagrams 229 2 1 Indoor Units 229 2 2 Outdoor Units 230...

Page 231: ...CVMB 9 ATXS20 25 35DVMB FTYN20 25 35CVMB9 ATXS20 25 35DAVMB M 4D033698E FIELD PIPING FIELD PIPING 6 4CuT 9 5CuT 7 9CuT REFRIGERANT FLOW FAN MOTOR ON HEAT EXCH THERMISTOR INDOOR UNIT COOLING 7 0CuT 6 4...

Page 232: ...TH FILTER MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE DISCHARGE PIPE THERMISTOR FOUR WAY VALVE NORMALLY OFF MOTOR OPERATED VALVE 3D043690C 9 5CuT 9 5CuT 7 0CuT 7 0CuT OUTDOOR UNIT MUFFLER PRO...

Page 233: ...ATOR DISCHARGE PIPE THERMISTOR MUFFLER WITH FILTER HEAT EXCHANGER THERMISTOR OUTDOOR TEMPERATURE THERMISTOR MOTOR OPERATED VALVE LIQUID STOP VALVE GAS STOP VALVE 3D048297 7 9CuT 7 9CuT 7 9CuT OUTDOOR...

Page 234: ...TH FILTER LIQUID STOP VALVE GAS STOP VALVE DISCHARGE PIPE THERMISTOR FOUR WAY VALVE NORMALLY OFF MOTOR OPERATED VALVE 3D043690C 9 5CuT 9 5CuT 7 0CuT 7 0CuT OUTDOOR UNIT MUFFLER PROPELLER FAN HEAT EXCH...

Page 235: ...H FILTER MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE DISCHARGE PIPE THERMISTOR FOUR WAY VALVE NORMALLY OFF MOTOR OPERATED VALVE 9 5CuT 9 5CuT 7 0CuT 7 0CuT OUTDOOR UNIT MUFFLER PROPELLER FAN...

Page 236: ...TOR HEAT EXCHANGER THERMISTOR MOTOR OPERATED VALVE LIQUID RECEIVER WITH FILTER FOUR WAY VALVE ON HEATING DISCHARGE PIPE THERMISTOR LIQUID STOP VALVE GAS STOP VALVE 3D048295 9 5CuT 7 9CuT 7 9CuT OUTDOO...

Page 237: ...MUFFLER WITH FILTER LIQUID STOP VALVE GAS STOP VALVE DISCHARGE PIPE THERMISTOR FOUR WAY VALVE NORMALLY OFF MOTOR OPERATED VALVE 9 5CuT 9 5CuT 7 0CuT 7 0CuT OUTDOOR UNIT MUFFLER PROPELLER FAN HEAT EXCH...

Page 238: ...70 S6 FUSE M PROTECTIVE EARTH RUNNING CAPACITOR M1S S7 indoor S1 1 t M M1F C70 140 C 3 15A Fu H1P H3P PILOT LAMP M1F FAN MOTOR M1S SWING MOTOR PCB1 PCB3 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR S1 S36...

Page 239: ...PCB2 R1T 1 CONDENSER BLK t BLK S90 HC3 R2T BLK DB2 t BLK DISCHARGE R3T BLK 6 t BLK S70 C75 C74 1 HC4 WHT 2 ORG 1 3 M BRN 4 M1F BLU C94 3 15A 7 FU2 RED C95 2 Q1L S40 BLK GRY 1 S30 W W 5 BLU M1C IPM1 V...

Page 240: ...0 R1T R2T R3T S20 S70 S80 S90 V2 V3 SA1 L1 MAGNETIC RELAY NEUTRAL OVERLOAD PROTECTOR THERMISTOR SURGE ARRESTER outdoor CONNECTOR S70 PCB M1F 1 BLK MRL 1 3 M WHT C80 6 3 15A RED MRCW FU1 3 Y1R V1 BLU V...

Page 241: ...Wiring Diagrams SiENBE04 512A 232 Appendix...

Page 242: ...ck 136 compressor 177 209 compressor lock 109 compressor overload 108 compressor protection function 54 connectors 30 32 34 connectors fan motor 163 four way valve 169 control PCB indoor unit 31 153 c...

Page 243: ...l in cooling 115 HL3 32 HN3 32 HOME LEAVE operation 45 81 horizontal blade 146 hot start function 47 I indoor heat exchanger thermistor 106 148 indoor unit PCB abnormality 102 input current control 55...

Page 244: ...S36 30 S40 32 S6 30 148 S7 30 148 S70 32 34 163 188 S80 32 34 169 188 S90 32 34 189 safety precautions 67 self diagnosis digital display 47 sensor malfunction detection 61 service check function 98 s...

Page 245: ...SiENBE04 512A iv Index wiring diagrams 229...

Page 246: ...or unit PCB abnormality 102 input current control 55 input over current detection 111 installation condition check 133 insufficient gas 127 insufficient gas control 61 INTELLIGENT EYE 43 INTELLIGENT E...

Page 247: ...ntrol 60 thermistor or related abnormality indoor unit 106 thermistor or related abnormality outdoor unit 119 thermistor resistance check 132 trial operation from remote control 218 turning speed puls...

Page 248: ...o express or implied warranty is given for the completeness accuracy reliability or fitness for particular purpose of its content and the products and services presented therein Specifications are sub...

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