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Daikin 2MXS40H2V1B, Service Manual

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Daikin 2MXS40H2V1B Service Manual Download Page 170

Troubleshooting for RA Indoor Unit

SiBE121123_A

159

Service Diagnosis

5.2

Freeze-up Protection Control or Heating Peak-cut 
Control

Error Code

A5

Method of Error 
Detection

Freeze-up protection control
During cooling operation, the freeze-up protection control (operation halt) is activated 
according to the temperature detected by the indoor heat exchanger thermistor.
Heating peak-cut control
During heating operation, the indoor heat exchanger temperature is used for the heating 
peak-cut control (operation halt, outdoor fan stop, etc.) 

Error Decision 
Conditions

Freeze-up protection control
During cooling operation, the indoor heat exchanger temperature is below 0°C.
Heating peak-cut control
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 exchanger
Defective indoor heat exchanger thermistor
Defective indoor unit PCB

Summary of Contents for 2MXS40H2V1B

Page 1: ...Service Manual Inverter Multi for 2 Rooms H Series G Series SiBE121123_A Applied Models O Inverter Multi Heat Pump...

Page 2: ...FTXS25K2V1B FLXS25BAVMB FTXS35K2V1B FLXS35BAVMB FTXS42K2V1B FLXS50BAVMB FTXS50K2V1B FDXS25EAVMB FTXS20J2V1B FDXS35EAVMB FTXS25J2V1B FDXS50CVMB FTXS35J2V1B FDXS25E7VMB FTXS42J2V1B FDXS35E7VMB FTXS50J2V...

Page 3: ...1 1 8 FDXS25 35EAVMB FDXS25 35E7VMB FDXS50CVMB FDXS50C7VMB 43 1 9 FFQ25 35 50B8V1B FFQ25 35 50B9V1B 45 2 Wired Remote Controller 46 2 1 BRC1D528 46 2 2 BRC1E51A7 47 3 Wireless Remote Controller 48 3 1...

Page 4: ...Heating Peak cut Control 97 4 8 Outdoor Fan Control 98 4 9 Liquid Compression Protection Function 98 4 10 Defrost Control 99 4 11 Outdoor Electronic Expansion Valve Control 100 4 12 Malfunctions 104...

Page 5: ...between Indoor Unit and Remote Controller 175 6 8 Signal Transmission Error between MAIN Remote Controller and SUB Remote Controller 176 6 9 Field Setting Abnormality 177 7 Troubleshooting for Outdoor...

Page 6: ...8 15 Power Module Check 217 Part 7 Trial Operation and Field Settings 218 1 Pump Down Operation 219 2 Forced Cooling Operation 220 3 Trial Operation 221 3 1 RA Indoor Unit FTXG FTXS ATXS FTX ATX FVXG...

Page 7: ...ower cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock If it is necessary to su...

Page 8: ...ctrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or...

Page 9: ...heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the t...

Page 10: ...ent children from swallowing it If a child swallows the coin battery see a doctor immediately Warning Caution Installation of a leakage breaker is necessary in some cases depending on the conditions o...

Page 11: ...to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water may enter the room and wet the furniture and floor For unitary type only Ca...

Page 12: ...SiBE121123_A 1 List of Functions Part 1 List of Functions 1 Functions 2...

Page 13: ...iring error check function COMFORT AIRFLOW operation Anti corrosion treatment of outdoor heat exchanger Comfort Control Auto fan speed Indoor unit quiet operation Flexibility Multi split split type co...

Page 14: ...igital LED display COMFORT AIRFLOW operation Comfort Control Auto fan speed Wiring error check function Indoor unit quiet operation Anti corrosion treatment of outdoor heat exchanger NIGHT QUIET mode...

Page 15: ...diagnosis digital LED display 3 D airflow Wiring error check function COMFORT AIRFLOW operation Anti corrosion treatment of outdoor heat exchanger Comfort Control Auto fan speed Flexibility Multi spl...

Page 16: ...ight and left Self diagnosis digital LED display 3 D airflow Wiring error check function COMFORT AIRFLOW operation Anti corrosion treatment of outdoor heat exchanger Comfort Control Auto fan speed Fle...

Page 17: ...gital LED display 3 D airflow Wiring error check function COMFORT AIRFLOW operation Anti corrosion treatment of outdoor heat exchanger Comfort Control Auto fan speed Flexibility Multi split split type...

Page 18: ...ing right and left Self diagnosis digital LED display 3 D airflow Wiring error check function COMFORT AIRFLOW operation Anti corrosion treatment of outdoor heat exchanger Comfort Control Auto fan spee...

Page 19: ...play COMFORT AIRFLOW operation Wiring error check function Comfort Control Auto fan speed Anti corrosion treatment of outdoor heat exchanger Indoor unit quiet operation Flexibility Multi split split t...

Page 20: ...flow Self diagnosis digital LED display COMFORT AIRFLOW operation Wiring error check function Comfort Control Auto fan speed Anti corrosion treatment of outdoor heat exchanger Indoor unit quiet operat...

Page 21: ...SiBE121123_A Specifications 10 Part 2 Specifications 1 Indoor Unit 11 2 Outdoor Unit 27...

Page 22: ...oss Weight Gross Mass kg 15 16 Sound Pressure Level H M L SL dB A 38 32 25 22 39 34 28 25 38 32 25 22 39 34 28 25 Sound Power Level dB 56 57 54 55 Heat Insulation Both Liquid and Gas Pipes Both Liquid...

Page 23: ...Mass kg 15 16 Sound Pressure Level H M L SL dB A 42 34 26 23 42 36 29 26 42 34 26 23 42 36 29 26 Sound Power Level dB 60 60 58 58 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes P...

Page 24: ...Weight Gross Mass kg 15 16 Sound Pressure Level H M L SL dB A 44 40 35 32 44 40 35 32 44 40 35 32 44 40 35 32 Sound Power Level dB 60 60 60 60 Heat Insulation Both Liquid and Gas Pipes Both Liquid and...

Page 25: ...Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D074531A 3D074535A Model FTXS20K2V1B FTXS25K2V1B Cooling Heating Cooling Heating Rated Capacity 2 0 kW Class 2 5 kW Cl...

Page 26: ...Weight Gross Mass kg 15 15 Sound Pressure Level H M L SL dB A 45 37 29 19 45 39 29 19 45 39 33 21 45 39 33 22 Sound Power Level dB 59 59 59 59 Heat Insulation Both Liquid and Gas Pipes Both Liquid and...

Page 27: ...id mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm I D 14 0 O D 18 0 18 0 Drawing No 3D070564A 3D070565A Model FTXS35J2V1B FTXS42J2V1B Cooling Heating Cooling Heating Rated Capacity 3 5 kW Class 4 2 kW Class Front...

Page 28: ...lass Front Panel Color White White Airflow Rates H m min cfm 9 4 332 9 9 350 9 1 321 9 8 346 M 7 4 261 8 2 290 7 1 252 7 9 280 L 5 5 194 6 5 230 5 2 182 6 2 217 SL 4 0 141 5 5 194 3 7 130 5 2 183 Fan...

Page 29: ...ight Gross Mass kg 14 14 Sound Pressure Level H M L SL dB A 42 34 26 23 42 36 29 26 42 38 33 30 42 38 33 30 Sound Power Level H dB 59 59 59 59 Heat Insulation Both Liquid and Gas Pipes Both Liquid and...

Page 30: ...Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D065930 3D065931 Model FTX35JV1B ATX20JV1B Cooling Heating Cooling Heating Rated Capacity 3 5 kW Class 2 0 kW Class Fr...

Page 31: ...Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D065934 3D065935 Model FTX20J2V1B FTX25J2V1B Cooling Heating Cooling Heating Rated Capacity 2 0 kW Class 2 5 kW Class Front...

Page 32: ...ing Connection Liquid mm 6 4 6 4 Gas mm 9 5 9 5 Drain mm 18 0 18 0 Drawing No 3D080675 3D080717 Model ATX25J2V1B ATX35J2V1B Cooling Heating Cooling Heating Rated Capacity 2 5 kW Class 3 5 kW Class Fro...

Page 33: ...ss Weight Gross Mass kg 28 28 Sound Pressure Level H M L SL dB A 38 32 26 23 39 32 26 22 39 33 27 24 40 33 27 23 Sound Power Level dB 52 53 52 53 Heat Insulation Both Liquid and Gas Pipes Both Liquid...

Page 34: ...t Gross Mass kg 18 18 Sound Pressure Level H M L SL dB A 38 32 26 23 38 32 26 23 39 33 27 24 39 33 27 24 Sound Power Level dB 52 52 52 52 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas...

Page 35: ...ass kg 16 16 Gross Weight Gross Mass kg 22 22 Sound Pressure Level H M L SL dB A 37 34 31 28 37 34 31 29 38 35 32 29 39 36 33 30 Sound Power Level dB 51 51 53 54 Heat Insulation Both Liquid and Gas Pi...

Page 36: ...1 29 35 33 31 29 Sound Power Level dB 53 53 53 53 External Static Pressure Pa 30 30 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas mm 9 5 9...

Page 37: ...ss kg 21 21 Sound Pressure Level H L dB A 29 5 24 5 32 0 25 0 Sound Power Level dB 46 5 49 0 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Piping Connection Liquid mm 6 4 6 4 Gas...

Page 38: ...Packaged Dimension H W D mm 612 906 364 612 906 364 Weight Mass kg 38 42 Gross Weight Gross Mass kg 43 47 Sound Pressure Level dB A 47 48 48 50 Sound Power Level dB 62 63 Piping Connection Liquid mm 6...

Page 39: ...S20 25 35 42 50J2V1B ATXS20 25 35 42 50G2V1B 33 1 4 FTX20 25 35JV1B FTX20 25 35J2V1B ATX20 25 35JV1B ATX20 25 35J2V1B 35 1 5 FVXG25 35 50K2V1B 37 1 6 FVXS25 35 50FV1B 39 1 7 FLXS25 35 50BAVMB 41 1 8 F...

Page 40: ...NT EYE sensor PCB 3 S32 Indoor heat exchanger thermistor 4 S41 Connector for swing motors 5 S42 Connector for reduction motor front panel mechanism and limit switch 6 S46 Connector for signal receiver...

Page 41: ...circuit Improper operation may occur if you cut any of them INTELLIGENT EYE Sensor PCB 1 S51 Connector for control PCB 2 S52 Connector for room temperature thermistor 3 S1W Forced operation ON OFF but...

Page 42: ...r display PCB 4 S32 Connector for indoor heat exchanger thermistor 5 S200 Connector for fan motor 6 S403 Connector for adaptor PCB option 7 FG1 FG2 Connector for terminal board frame ground 8 H1 H2 H3...

Page 43: ...Connector for control PCB 2 SW1 S1W Forced cooling operation ON OFF button 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for INTELLIGENT EYE green 6 RTH1 R1T Room t...

Page 44: ...rol HA 3 S25 Connector for INTELLIGENT EYE sensor PCB 4 S32 Indoor heat exchanger thermistor 5 S41 Connector for swing motors 6 S46 Connector for display PCB 7 S47 Connector for signal receiver PCB 8...

Page 45: ...onnector for control PCB 3P210728 1 S48 1 S49 Connector for control PCB 2 SW1 Forced operation ON OFF button 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for INTEL...

Page 46: ...tor horizontal blade 2 S26 Connector for display PCB 3 S32 Connector for indoor heat exchanger thermistor 4 S200 Connector for fan motor 5 S403 Connector for adaptor PCB option 6 H1 H2 H3 FG Connector...

Page 47: ...Wiring Diagram 36 Display PCB 1 S27 Connector for control PCB 2 SW1 S1W Forced operation ON OFF button 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 RTH1 R1T Room temperature t...

Page 48: ...control HA 5 S26 Connector for service PCB 6 S30 Connector for indoor electronic expansion valve coil motor operated valve coil 7 S32 Connector for indoor heat exchanger thermistor 8 S33 Connector for...

Page 49: ...CB 2 S1W Forced cooling operation ON OFF button 3 H1P LED for operation green 4 H2P LED for timer yellow 5 H3P LED for RADIANT operation red S56 S1W H3P H1P H2P 3P273252 1 1 S27 Connector for main PCB...

Page 50: ...4 S32 Indoor heat exchanger thermistor 5 S41 Connector for lower air outlet motor 6 S42 Connector for swing motor 7 S46 Connector for display PCB 8 S48 Connector for sensor PCB 9 H1 H2 H3 Connector f...

Page 51: ...450 1 1 S27 Connector for control PCB 2 SW2 4 Switch for upward airflow limit setting Refer to page 230 for detail Keep the other switches as factory setting 3 SW4 S4W Switch for airflow selection Ref...

Page 52: ...3 S21 Connector for centralized 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 suppl...

Page 53: ...ristor 5 FU1 Fuse 3 15A 250V 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 4 LED3 H3P LED for HOME LEAVE op...

Page 54: ...C fan motor Hall IC 3 S21 Connector for centralized control HA 4 S26 Connector for display PCB 5 S32 Connector for indoor heat exchanger thermistor 6 H1 H2 H3 Connector for terminal board 7 GND Connec...

Page 55: ...4 Display PCB 1 S1 Connector for control PCB 2 SW1 S1W Forced operation ON OFF button 3 LED1 H1P LED for HOME LEAVE operation red 4 LED2 H2P LED for timer yellow 5 LED3 H3P LED for operation green 6 R...

Page 56: ...A Connector for signal receiver PCB when the wireless remote controller is used 8 X25A Connector for drain pump motor 9 X27A Connector for terminal board for inter unit wiring 10 X33A Connector for wi...

Page 57: ...Circuit Board Connector Wiring Diagram 46 2 Wired Remote Controller 2 1 BRC1D528 PCB Detail 1 P1 P2 Terminal for indoor unit 2 R1T Room temperature thermistor 3 SS1 MAIN SUB setting switch Refer to p...

Page 58: ...Wired Remote Controller SiBE121123_A 47 Printed Circuit Board Connector Wiring Diagram 2 2 BRC1E51A7 PCB Detail 1 P1 P2 Terminal for indoor unit 2 R1T Room temperature thermistor P2 R1T P1 2P243326 1...

Page 59: ...ay PCB 2 X2A Connector for control PCB 3 SS1 MAIN SUB setting switch SS2 Address setting switch Refer to page 236 for detail 3P156326 2 X2A SS2 SS1 X1A 1 X1A Connector for signal receiver PCB 2 BS1 Fo...

Page 60: ...coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 S91 Connector for thermistors gas pipe 9 S92 Connector for thermistors liquid pipe 10 E E2 Terminal for...

Page 61: ...am 50 40 class 50 class HN2 HL1 E FU3 FU1 FU2 HR1 HR2 U V W J3 J5 S70 S45 S40 S92 S90 S91 S20 S21 S80 V1 V3 V4 LED A S B S A 2P190760 2 2P190760 3 HR2 HR1 FU2 FU1 E2 HL1 HN1 FU3 V4 V3 V1 S A S B S80 S...

Page 62: ...p TIMER Lamp 73 1 17 Brightness Setting of Indoor Unit Display 74 1 18 Clock Setting 75 1 19 WEEKLY TIMER Operation 76 1 20 Other Functions 82 2 Function of SA Indoor Unit 83 2 1 Drain Pump Control 83...

Page 63: ...requency 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 temperature...

Page 64: ...ng and cooling Once 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 m...

Page 65: ...fan banned area Control Flow Timing Chart 1 Opening the front panel fully Start Running 2 Output of the D signal after the front panel starts moving 4 Making the fan rotate when the flap passes over t...

Page 66: ...c synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution Auto Swing The following table explains the auto swing process for cooling dry heating and fan Wall Mou...

Page 67: ...low becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown in the following diagram 1 The vertical blades louvers move from t...

Page 68: ...n switch Open the front panel Cooling Dry Heating R18417 R18418 A B FTXG 5 75 CTXS FTXS20 25K FTX ATX 0 50 FTXS35 42 50K 5 70 FTXS J 8 80 ATXS 5 80 A B CAUTION Before opening the front panel be sure t...

Page 69: ...to the troubleshooting for fan motor on page 161 164 Automatic Fan Speed Control In automatic fan speed operation the step SL is not available The airflow rate is automatically controlled within this...

Page 70: ...door heat exchanger temperature and the difference between the room thermistor temperature and the target temperature Note 1 During POWERFUL operation the fan rotates at H tap 40 80 rpm 2 The fan stop...

Page 71: ...starts and adjusts the opening of the indoor electronic expansion valve to achieve the target panel temperature The panel temperature is categorized into stop dropping keep up and return zones The tar...

Page 72: ...rature Set temperature Rotation speed of indoor unit fan Note The only difference between RADIANT 1 and RADIANT 2 is the movement of the indoor unit fan In RADIANT 1 the rotation speed of the indoor u...

Page 73: ...istor temperature at start up and the target temperature is divided into two zones Then the unit operates with an appropriate capacity for each zone to maintain the temperature and humidity at a comfo...

Page 74: ...switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 3 0 C FTXG FTXS35 42 50K FVXG series Tr Tt 2 5 C other models 2 Cooling Heating switchin...

Page 75: ...trol 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 Cooling Dry 10 minutes Heating Radiant 10 secon...

Page 76: ...then automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter...

Page 77: ...ed from the wireless remote controller by pushing the ECONO button Detail When this function is activated the maximum capacity also decreases ECONO operation can only be set when the unit is running P...

Page 78: ...ction becomes effective The HOME 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 controlle...

Page 79: ...he FAN setting button as you like HOME LEAVE operation will run with these settings the next time you start HOME LEAVE operation To change the recorded information repeat steps 1 3 Others The set temp...

Page 80: ...output The microcomputer in the indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20 msec 10 200 msec and when the ON si...

Page 81: ...and B Shift the airflow direction to area B left side 2 Detection signal ON in area A Shift the airflow direction to area B left side 3 Detection signal ON in area B Shift the airflow direction to are...

Page 82: ...the motion signal is ON 2 The motions for example in cooling When a microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in te...

Page 83: ...FVXG Series POWERFUL operation is only available in RADIANT 1 RADIANT operation with heating it is not available in RADIANT 2 RADIANT operation only Operation mode Fan speed Target temperature COOL H...

Page 84: ...ual operation mode The lamp color changes according to the operation AUTO Red Blue DRY Green COOL Blue HEAT Red FAN White TIMER Orange Brightness Setting The brightness of the multi colored indicator...

Page 85: ...om the brightness setting mode When the remote controller is left untouched for 60 seconds it returns to the normal mode also 1 17 Brightness Setting of Indoor Unit Display Wall Mounted Type FTXS35 42...

Page 86: ...or decreases the time display rapidly 5 Press the CLOCK button Point the remote controller at the indoor unit when pressing the button blinks and clock setting is completed ARC433 Series The clock ca...

Page 87: ...re made for the week from Monday through Friday while different timer settings are made for the weekend Tuesday to Friday Program 1 ON Program 2 OFF Program 3 ON Program 4 OFF Program 1 ON Program 1 O...

Page 88: ...am 2 OFF Program 3 ON Program 4 OFF The day of the week and the reservation number of the current day will be displayed 1 to 4 settings can be made per day 2 Press to select the desired day of the wee...

Page 89: ...xt reservation screen will appear To continue further settings repeat the procedure from step 4 The multi monitor lamp blinks twice The TIMER lamp periodically lights orange The multi monitor lamp wil...

Page 90: ...4 OFF Tuesday to Friday 2 Press to confirm the day of the week to be copied Be sure to direct the remote controller toward the indoor unit and check for a receiving tone and flashing the multi monito...

Page 91: ...reservation details To change the confirmed reserved settings select the reservation number and press The mode is switched to setting mode Go to setting mode step 2 To deactivate WEEKLY TIMER operatio...

Page 92: ...will be deleted All reservations Hold for 5 seconds while normal display 2 Press to select the day of the week and the reservation number to be deleted Pressing changes ON OFF TIMER mode Pressing alt...

Page 93: ...ding Type This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter as a single highly effective filter The filter traps microscopic particles decomposes odo...

Page 94: ...thermostat is ON 2 1 2 When the Float Switch is Tripped While the Cooling Thermostat is OFF 3 Malfunction residual The remote controller displays A3 and the air conditioner comes to an abnormal stop...

Page 95: ...d AF is then displayed as operation continues 5 Malfunction residual The remote controller displays A3 and the air conditioner comes to an abnormal stop if the float switch is OFF for more than 5 minu...

Page 96: ...mperature has changed from 18 C to 30 C A F This example also assumes there are several other air conditioners and the suction temperature changes even when the thermostat sensor is off Body thermosta...

Page 97: ...mperature in the figure above is 24 C and the suction temperature has changed from 18 C to 28 C A D This example also assumes there are several other air conditioners and the suction temperature chang...

Page 98: ...with the following conditions and is also set in accordance with the conditions given below Conditions for starting Temperature is 1 C or less for total of 40 min or temperature is 5 C or less for to...

Page 99: ...ty Detail TH2 Temperature C detected with the gas thermistor Tc High pressure equivalent saturated temperature Defrost ending or oil return ending or Thermostat ON The fan is not OFF before initiating...

Page 100: ...tor is judged as disconnected 3 In cooling operation the outdoor heat exchanger thermistor is used for high pressure protection 2 Discharge Pipe Thermistor 1 The discharge pipe thermistor is used for...

Page 101: ...highest indoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected 6 When only one indoor unit is operating the indoor heat exchanger therm...

Page 102: ...he operation mode of the system The following procedure is taken when the operation modes conflict with each other 1 The system follows the operation mode which is set first First push first set 2 For...

Page 103: ...limit frequency The minimum value is set as the upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature low Hz...

Page 104: ...e operating frequency is not change more than a certain fixed time the frequency is adjusted according to the D value When the D value is low the frequency is lowered When the D value is high the freq...

Page 105: ...switch of the four way valve is carried out after the operation stopped Detail OFF delay switch of four way valve The four way valve coil is energized for 150 seconds after the operation is stopped 4...

Page 106: ...r limit of frequency is set to keep this temperature from rising further Detail 40 class 50 class A Hz 62 55 B Hz 72 70 C Hz 90 85 D seconds 140 150 E seconds 180 180 F seconds 300 300 sec Time R13528...

Page 107: ...ent maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current dropping and stop value according to the outdoor temperature The current drops when outdoor temperatur...

Page 108: ...changed The maximum value of the indoor heat exchanger temperature controls the following excluding stopped rooms Zone Control Stop zone When the temperature reaches the stop zone the compressor stops...

Page 109: ...ses When the outdoor temperature is more than 10 C the fan is turned off for 30 seconds 6 Fan speed control during forced operation The outdoor fan is controlled as well as normal operation during for...

Page 110: ...nutes of accumulated time pass since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The target heat exchanger temperature as the canceling condition is s...

Page 111: ...control during heating 4 Gas pipe isothermal control during cooling Open Control 1 Outdoor electronic expansion valve control when starting operation 2 Outdoor electronic expansion valve control when...

Page 112: ...equalizing control Open control when starting Target discharge pipe temperature control Defrost control Pressure equalizing control Open control when starting Continue Pressure equalizing control SC...

Page 113: ...tdoor electronic expansion valve opening is controlled when the operation starts and prevent the superheating or liquid compression 4 11 5 Control when the Frequency Changes When the target discharge...

Page 114: ...djustment when the thermistor is disconnected When the disconnection is ascertained the compressor continues operation for 9 minutes and then stops When the compressor stops repeatedly the system is s...

Page 115: ...mperature Previous discharge pipe temperature 4 12 Malfunctions 4 12 1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer CT system Relating to T...

Page 116: ...rget discharge pipe temperature and the outdoor electronic expansion valve is fully open for more than the specified time it is regarded as refrigerant shortage Refer to page 178 for detail 4 12 4 Ant...

Page 117: ...2V1B 109 1 3 FTXS20 25 35 42 50J2V1B 111 1 4 ATXS20 25 35 42 50G2V1B 113 1 5 FTX20 25 35JV1B FTX20 25 35J2V1B ATX20 25 35JV1B ATX20 25 35J2V1B 115 1 6 FVXG25 35 50K2V1B 117 1 7 FVXS25 35 50FV1B 119 1...

Page 118: ...h High Press this button once to start operation Press once again to stop it TEMPERATURE adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the curr...

Page 119: ...e in HEAT operation This function will prevent cold or warm air from directly blowing on your body Press this button and adjust the day and time with the SELECT button Press this button again to compl...

Page 120: ...once to start operation Press once again to stop it TEMPERATURE adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the current settings In this ill...

Page 121: ...d the louver moves right and left The flap louver stops when you press the SWING button again Press this button and adjust the day and time with the SELECT button Press this button again to complete T...

Page 122: ...e to start operation Press once again to stop it TEMPERATURE adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the current settings In this illustr...

Page 123: ...n again Press this button and adjust the day and time with the SELECT button Press this button again to complete TIMER setting CLOCK 7 button It changes the ON OFF TIMER and WEEKLY TIMER settings TIME...

Page 124: ...e indoor unit If there is anything to block signals between the unit and the remote controller such as a curtain the unit will not operate The maximum distance for communication is approx 7m ECONO 1 b...

Page 125: ...riority is given to the function you pressed last ON TIMER button Press this button and adjust the day and time with TIMER setting button Press this button again to complete TIMER setting OFF TIMER bu...

Page 126: ...use the remote controller aim the transmitter at the indoor unit If there is anything to block signals between the unit and the remote controller such as a curtain the unit will not operate The maximu...

Page 127: ...e day and time with TIMER setting button Press this button again to complete TIMER setting OFF TIMER button Press this button and adjust the day and time with TIMER setting button Press this button ag...

Page 128: ...again to stop it TEMPERATURE adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the current settings In this illustration each section is shown with...

Page 129: ...ERFUL operation cannot be used at the same time Priority is given to the function you pressed last Powerful operation Press this button and adjust the day and time with the SELECT button Press this bu...

Page 130: ...eration Press once again to stop it TEMPERATURE adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the current settings In this illustration each se...

Page 131: ...ction When you press the SWING button the flap moves up and down The flap louver stops when you press the SWING button again Press this button and adjust the day and time with the SELECT button Press...

Page 132: ...oller such as a curtain the unit will not operate The maximum distance for communication is approx 7m HOME LEAVE 1 button Press this button to start HOME LEAVE operation The HOME LEAVE lamp lights up...

Page 133: ...last ON TIMER button Press this button and adjust the day and time with the TIMER setting button Press this button again to complete TIMER setting OFF TIMER button Press this button and adjust the day...

Page 134: ...unit and the remote controller such as a curtain the unit will not operate The maximum distance for communication is approx 7m HOME LEAVE 1 button Press this button to start HOME LEAVE operation The...

Page 135: ...WERFUL operation cannot be used at the same time Priority is given to the function you pressed last ON TIMER button Press this button and adjust the day and time with the TIMER setting button Press th...

Page 136: ...SA Indoor Unit SiBE121123_A 125 Remote Controller 2 SA Indoor Unit 2 1 BRC1D528 1 2 9 3 25 22 11 10 37 35 27 26 12 14 17 34 24 5 20 21 18 16 13 15 19 32 31 30 29 28 4 36 33 8 23 7 6...

Page 137: ...n installed option is addressed or a function is not available 14 SCHEDULE TIMER ICON This icon indicates that the schedule timer is enabled 15 ACTION ICONS These icons indicate the actions for each d...

Page 138: ...in programming mode to adjust the programmed action time Both buttons have an auto repeat function 32 TEMPERATURE ADJUST BUTTONS 33 OPERATION CHANGE MIN MIX BUTTON 1 select the operation mode of the i...

Page 139: ...Controller 128 2 2 BRC1E51A7 3 Menu Enter button 8 On Off button 10 Cancel button 9 Operation lamp 11 LCD with backlight 1 Operation mode selector button 2 Fan speed control button 4 Up button 5 Down...

Page 140: ...item selected Used to raise the set temperature The next items on the upper side will be highlighted The highlighted items will be scrolled continuously when the button is kept pressed Used to change...

Page 141: ...ay Displayed only when the air conditioner is in operation 14 Clock 24 hours real time clock with room temperature settings with no detailed items selected with no fan speed control function Airflow d...

Page 142: ...for the air conditioner Displayed when a total heat exchanger unit such as the Ventiair is connected For details refer to the Operation Manual of the Ventiair Displayed for a few seconds when an oper...

Page 143: ...stem is not provided with a function to set airflow directions 14 Clock 24 hours real time clock Displayed if the clock is set If the clock is not set will be displayed Displayed if the detailed displ...

Page 144: ...ER OPERATING INDICATOR LAMP Red TIMER INDICATOR LAMP Green DEFROST LAMP Orange AIR FILTER CLEANING TIME INDICATOR LAMP Red This lamp stays lit while the timer is set Lights up when it is time to clean...

Page 145: ...Series Only 168 6 Troubleshooting for SA Indoor Unit 169 6 1 Indoor Unit PCB Abnormality 169 6 2 Drain Level Control System Abnormality 170 6 3 Fan Motor AC Motor or Related Abnormality 171 6 4 Drain...

Page 146: ...tection 204 8 Check 206 8 1 Thermistor Resistance Check 206 8 2 Fan Motor Connector Output Check 207 8 3 Hall IC Check 208 8 4 Indoor Electronic Expansion Valve Coil Check 208 8 5 Power Supply Wavefor...

Page 147: ...he indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Wall Mounted Type FTXG Series Wall Mounted Type CTXS FTXS20 25K Series FTXS35 42 50K Series...

Page 148: ...mode as cooling or heating and check again if the operation lamp is normal If the lamp stops blinking after the above steps there is no malfunction Operation stops and operation lamp blinks only for i...

Page 149: ...elow 10 CDB Diagnose with remote controller indication 155 156 Some indoor units do not operate Check the type of the indoor units Check if the indoor unit type is compatible with the outdoor unit Dia...

Page 150: ...n down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try the...

Page 151: ...utton at the same time 5C is displayed on the LCD 2 Select 5C service check with the Temp or button 3 Press the Mode button to enter the service check mode The left side number blinks 4 Press the Temp...

Page 152: ...e Temp or button and change the number until you hear the long beep 8 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number...

Page 153: ...indicate 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 norm...

Page 154: ...or the 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...

Page 155: ...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 descriptio...

Page 156: ...button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code tr...

Page 157: ...ve beeps or the 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 r...

Page 158: ...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 descriptio...

Page 159: ...n for more than 4 seconds Field setting mode Service mode Normal mode Test operation mode Inspection mode Press the INSPECTION TEST OPERATION button once Press the INSPECTION TEST OPERATION button for...

Page 160: ...ng status list Clock setting Language changeover Basic Screen Operation mode changeover Fan speed control Menu display Confirmation of each setting On Off Cancel Operation lamp Field Setting Menu Test...

Page 161: ...de and malfunction contents Note 1 When you press the INSPECTION TEST OPERATION button the inspection display blinks 2 While in the inspection mode press the ON OFF button for 5 seconds or more to cle...

Page 162: ...y Abnormal shutdown The system stops operating The operation lamp green starts to blink The message Error Press Menu Button appears and blinks at the bottom of the screen Warning The system continues...

Page 163: ...2 Press the UP or DOWN button and change the UNIT No until the receiver of the remote controller starts to beep Inspection Test button R14392 00 0 UP button DOWN button R15408 00 1 If you hear Then 3...

Page 164: ...or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep Step Action MODE button R15410 00 1 UP button DOWN button R15411 UP DOWN 4 5 6 7 8 9 U P...

Page 165: ...error code lower digit until the receiver of the remote controller generates a continuous beep 7 Press the MODE button to return to the normal mode If you do not press any button for 1 minutes the rem...

Page 166: ...normality freeze up protection control FVXG series only 165 C4 Indoor heat exchanger thermistor or related abnormality 167 C7 Front panel open close fault FTXG series only 168 C9 Room temperature ther...

Page 167: ...lock 190 E7 DC fan lock 191 E8 Input overcurrent detection 192 F3 Discharge pipe temperature control 193 F6 High pressure control in cooling 194 H0 Compressor system sensor abnormality 195 H6 Positio...

Page 168: ...ty Error Code A1 Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit Error Decision Conditions The system cannot set the internal sett...

Page 169: ...S NO NO YES R15310 Caution To secure the connection once disconnect the connector and then reconnect it YES NO YES NO YES NO YES Match the compatible models Correct the power supply Replace the indoor...

Page 170: ...cut control During heating operation the indoor heat exchanger temperature is used for the heating peak cut control operation halt outdoor fan stop etc Error Decision Conditions Freeze up protection...

Page 171: ...ficient air passage Clean the air filter Clean the indoor heat exchanger Replace the indoor unit PCB Replace the thermistor As described in the thermistor characteristic chart Check the air filter Che...

Page 172: ...ed to determine abnormal fan motor operation Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan m...

Page 173: ...y be damaged Check No 02 Check the output of the fan motor connector R14970 NO YES YES NO YES NO Replace the indoor fan motor Replace the indoor unit PCB Replace the indoor unit PCB Replace the indoor...

Page 174: ...nnect it Foreign matters in or around the fan Is the rotation pulse generated Rotate the fan by hand Turn the power on again Check the fan motor for breakdown or short circuit Check the motor control...

Page 175: ...or of the fan motor Defective indoor unit PCB Troubleshooting Check No 04 Refer to P 208 NO NO NO NO NO NO YES YES YES YES YES YES R18358 Caution Replace the fan motor or the indoor unit PCB Replace t...

Page 176: ...to malfunction and heating or RADIANT operation is conducted in the other room s the refrigerant flows into the radiant panel and the radiant panel temperature rises Freeze up protection control The...

Page 177: ...r characteristic chart Is there any short circuit YES Clean the indoor heat exchanger Very dirty YES Clean the air filter Very dirty NO Completed Error repeats Be sure to turn off the power switch bef...

Page 178: ...n of connector Defective thermistor corresponding to the error code Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 206 C4 Indoor heat exchanger thermistor C9 Room temperature thermis...

Page 179: ...the power Wait until the initialization finishes 4 Operate the unit by the indoor unit ON OFF button YES YES YES YES NO NO NO NO Replace the harness and reduction motor Replace the assembly of the fr...

Page 180: ...ceived from the EEPROM EEPROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes External factor noise etc Defective indoor unit PCB Troubles...

Page 181: ...Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Connect the drain pump Replace the indoor unit PCB Replace the drain pump There is a drain sy...

Page 182: ...ed foreign matters Troubleshooting Note 1 Check the connector of fan motor Power supply cable 2 Turn OFF the power supply 3 Measure the resistance between the terminals at the motor side connectors to...

Page 183: ...llation Defective float switch Defective indoor unit PCB Troubleshooting YES YES NO NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damage...

Page 184: ...changing the indoor unit PCB To check the thermistors proceed as follows C4 Indoor heat exchanger thermistor 1 liquid pipe R2T C5 Indoor heat exchanger thermistor 2 R3T C9 Room temperature thermistor...

Page 185: ...thermistor is disconnected or shorted while the unit is running Supposed Causes Defective thermistor Broken wire Troubleshooting Note To delete the record of error codes press the ON OFF button for 4...

Page 186: ...ror caused by noise Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Is SS1 of both remote controllers set to MAIN Do...

Page 187: ...te controller is set to SUB when using 1 remote controller Connection of 2 sub remote controllers when using 2 remote controllers Defective remote controller PCB Troubleshooting Is SS1 of remote contr...

Page 188: ...Connect the remote controller correctly YES NO NO YES Remove the jumper NO YES Set the field setting correctly YES NO NO NO YES YES R17253 Is the remote controller connected to one or more indoor unit...

Page 189: ...igerant shortage detection I The following conditions continue for 7 minutes DC current DC voltage A Compressor output frequency B Output frequency C Refrigerant shortage detection II The following co...

Page 190: ...Check No 12 Outdoor electronic expansion valve functioning Replace the thermistor s in position Open the stop valve Repair the pipe flare or replace the union Check the harness for loosening Correct...

Page 191: ...voltage detection The voltage detected by the DC voltage detection circuit is below 180 V Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcompu...

Page 192: ...he harness Check the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Repeat a few times Precaution before turning on the power aga...

Page 193: ...work in order Signal transmission between the units cannot be performed for more than 15 seconds Zero cross signal cannot be detected for more than 10 seconds Supposed Causes Display disabled due to...

Page 194: ...proper connection Does the fuse have continuity NO YES Wait for more than 10 sec Check the thermal fuse on the terminal board Does the fuse have continuity YES Continued to the next page 1 YES 5 V 0...

Page 195: ...ng wiring insulation to ground Check grounding OK NO YES Does the LED A turn off 1 NO Check No 11 Power supply waveform check Continued from the previous page Carry out grounding work The cause seems...

Page 196: ...or units Supposed Causes Anti icing control in other room Wrong models interconnected Wrong indoor unit PCB or outdoor unit PCB mounted Troubleshooting Note Refer to Anti icing control for indoor unit...

Page 197: ...m Error Decision Conditions In cooling operation both the condition A and B are met for 5 minutes A Stop room thermistor temperature Indoor heat exchanger temperature 10 C B Indoor heat exchanger temp...

Page 198: ...ve or coil Replace the outdoor heat exchanger thermistor Replace the room temperature thermistor Replace the room temperature thermistor or indoor heat exchanger thermistor Do the vacuum drying Replac...

Page 199: ...ut down 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 conn...

Page 200: ...PCB Replace the four way valve or the coil Replace the outdoor unit PCB Discharge pipe thermistor disconnected Check No 01 Check the thermistors Check No 13 Check the four way valve Check No 14 Check...

Page 201: ...valve Troubleshooting Check No 15 Refer to P 212 Turn off the power Disconnect the harnesses U V and W R18317 Caution NO YES YES NO NO YES Check No 15 Check with the inverter analyzer Turn off the pow...

Page 202: ...of the fan motor Foreign matters stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 214 R15890 Caution YES YES NO YES NO NO YES NO Turn on the powe...

Page 203: ...n 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 interrupted by...

Page 204: ...ronic expansion valve Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 206 Check No 12 Re...

Page 205: ...ective outdoor unit PCB Troubleshooting Check No 01 Refer to P 206 Check No 12 Refer to P 210 Check No 17 Refer to P 215 Check No 18 Refer to P 215 Check No 19 Refer to P 216 R14413 Caution Replace th...

Page 206: ...detected by converting the sensor output to voltage or the DC voltage is 50 V or less Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn...

Page 207: ...sor running condition through 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 othe...

Page 208: ...YES Check No 20 Check the short circuit of the diode bridge Check No 15 Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic...

Page 209: ...nning frequency and the input current Error Decision Conditions The compressor running frequency is above 52 Hz If the error repeats the system is shut down Reset condition Continuous run for about 60...

Page 210: ...the discharge pipe temperature is lower than the heat exchanger temperature The system is shut down if all the units are judged as the J8 or J9 error Supposed Causes Disconnection of the connector fo...

Page 211: ...ce the defective thermistor s Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Liquid pipe thermistor Gas pipe thermistor Indoor heat exchanger thermistor Coo...

Page 212: ...of connector Defective outdoor unit PCB Troubleshooting Check No 17 Refer to P 215 Check No 19 Refer to P 216 A C B C C C 80 70 75 Caution WARNING To cool the electrical components the outdoor fan st...

Page 213: ...ature with the compressor on is above A C The error is cleared when the temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes wit...

Page 214: ...e Check No 17 Check the installation condition NO YES YES Above A C Radiation fin dirty Check No 19 Check the outdoor fan or related Error displayed again Has the PCB been replaced Check if silicon gr...

Page 215: ...e 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...

Page 216: ...Turn off the power and reconnect the harnesses Turn on the power again and start operation Turn off the power and turn it on again to start the system See if the same error occurs Check the power sup...

Page 217: ...of indoor heat exchanger thermistor is soldered on the PCB remove the thermistor and measure the resistance Thermistor temperature C Resistance k Room temperature thermistor for FTX and ATX series Oth...

Page 218: ...is 90 100 between the pins 12 9 and between 9 6 Motor control voltage check 1 Check the connector for connection 2 Check the motor control voltage is generated between the pins 2 3 Rotation pulse chec...

Page 219: ...check the indoor electronic expansion valve coil EV 1 Check to see if the EV connector is correctly connected to the PCB 2 Turn the power off and on again and check to see if the EV generate latching...

Page 220: ...sure the power supply waveform between No 1 and No 2 on the terminal board and check the waveform disturbance Check to see if the power supply waveform is a sine wave Fig 1 Check to see if there is wa...

Page 221: ...is faulty Note Please note that the latching sound varies depending on the valve type If the system keeps operating with a defective outdoor electronic expansion valve the following problem may occur...

Page 222: ...coil Cooling Dry No continuity Heating Continuity Replace the outdoor unit PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 S80 voltage at 22...

Page 223: ...the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor u...

Page 224: ...er 3 Press the ON OFF button FAN operation starts 4 Press the TEST button twice Power transistor test operation starts Diagnose method Diagnose according to 6 LEDs lighting status 1 When all the LEDs...

Page 225: ...the rotation command voltage between the pins 2 4 is 0 15 VDC 5 Keep operation off and power off Connect the connector S70 6 Check whether 2 pulses 0 15 VDC are output at the pins 1 4 when the fan mot...

Page 226: ...ty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temperat...

Page 227: ...1 k short circuit occurs on the main circuit The illustration is for 50 class model as representative R15128 YES YES NO NO Check the outdoor unit fan system Outdoor unit fan running Outdoor unit fan...

Page 228: ...ow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multi tester Evaluate the measurement results for a judgment The illus...

Page 229: ...ation 220 3 Trial Operation 221 3 1 RA Indoor Unit FTXG FTXS ATXS FTX ATX FVXG FVXS FLXS FDXS Series 221 3 2 SA Indoor Unit FFQ Series 223 4 Field Settings 225 4 1 RA Indoor Unit FTXG FTXS ATXS FTX AT...

Page 230: ...pipes for rooms A and B 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve at the pipes for rooms A and B with a hexagonal wrench 4 After 2 to 3 minutes close th...

Page 231: ...e outdoor unit is not operating Start Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds Operating room All rooms Command frequency 40 class 70 Hz 50 class 47 Hz End...

Page 232: ...h the operation manual to ensure that all functions and parts such as flap movement are working properly Note The air conditioner requires a small amount of power in its standby mode If the system is...

Page 233: ...erminates in approx 30 minutes and switches into normal mode To quit a trial operation press the ON OFF button ARC433 Series 1 Press the ON OFF button to turn on the system 2 Press the center of the T...

Page 234: ...the connections been checked for refrigerant leakage Poor cooling Poor heating Stop Is the power supply voltage conform to the specifications on the name plate Incorrect operation Are the cable sizes...

Page 235: ...6 Test operation is displayed on the bottom of the basic screen 7 Push the ON OFF button within 10 seconds to start the test operation How to check airflow direction 8 Push the Menu Enter button to e...

Page 236: ...ling only model The heating operation will not be available when the jumper on the left side is cut Replace the remote controller if you cut the jumper on the left side ARC452A1 ARC452A3 This remote c...

Page 237: ...ropriate indoor unit and wireless remote controller Wall Mounted Type 1 Remove the front grille 2 Remove the electrical box 3 Remove the shield plate of the electrical box 4 Cut the address setting ju...

Page 238: ...tanding Type FVXG Series 1 Remove the front panel air filters and front grille 2 Remove the screw and remove the service cover 3 Turn on the DIP switch S2W 1 on the service PCB Keep the other switches...

Page 239: ...lace the PCB if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit Improper operation may occur if you cut any of them Floor Ceiling Suspended Dual Type Cut the jumper JA...

Page 240: ...ontroller 1 Remove the cover and take it off 2 Cut the address setting jumper Caution Replace the remote controller if you accidentally cut a wrong jumper Jumpers are necessary for electronic circuit...

Page 241: ...mpers are necessary for electronic circuit Improper operation may occur if you cut any of them Jumper on indoor unit PCB Function When connected factory set When cut JB Fan speed setting when compress...

Page 242: ...indoor unit is under group control all settings for all the indoor units are set at the same time Use the codes 10 to 15 to apply this group control and proceed to the next step If you want to set th...

Page 243: ...2 and 23 have been selected push the button to highlight and buttons to select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Highlight the second code No to be cha...

Page 244: ...mal mode to enter the field setting mode 2 Press the MODE button to select the desired mode No 3 Press the UP button to select the first code No 4 Press the DOWN button to select the second code No 5...

Page 245: ...ple Double twin 1 Simultaneous operation system individual setting Unified setting Individual setting 7 External static pressure setting Airflow adjustment is OFF Completion of airflow adjustment Star...

Page 246: ...n below Gently pry off the upper part of the controller working from the two possible positions 2 Set the MAIN SUB changeover switch on the PCB to S Step Action Remote controller 1 Put on the power fo...

Page 247: ...remote controller you have to change the MAIN SUB setting on the signal receiver PCB Signal Receiver PCB Set the address setting switch SS2 on the signal receiver PCB according to the table below When...

Page 248: ...second to exit the field setting mode and return to the normal display Multiple Settings A b When the indoor is controlled by outside controller central remote controller etc it sometimes does not re...

Page 249: ...on panel air discharge outlet as well as on the back of the wireless remote controller Note Set the unit No of the receiver and the wireless remote controller to be the same If the settings differ the...

Page 250: ...cut J3 ECONO operation prohibition setting ECONO operation is available ECONO operation is disabled J5 Improvement of defrost performance Standard control Reinforced control Ex The frequency increases...

Page 251: ...bridge Detail 1 Wipe off the old silicon grease completely 2 Apply the silicon grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode...

Page 252: ...iBE121123_A 241 Appendix Part 8 Appendix 1 Piping Diagrams 242 1 1 Indoor Unit 242 1 2 Outdoor Unit 246 2 Wiring Diagrams 247 2 1 Indoor Unit 247 2 2 Outdoor Unit 253 3 Removal Procedure Booklet No 25...

Page 253: ...FLOW COOLING HEATING THERMISTOR ON HEAT EXCH 4D065855B INDOOR UNIT 6 4CuT HEAT EXCHANGER CROSS FLOW FAN FIELD PIPING 6 4CuT M FAN MOTOR FIELD PIPING 12 7CuT 9 5CuT REFRIGERANT FLOW COOLING HEATING THE...

Page 254: ...VXG25 35K2V1B FVXG50K2V1B INDOOR UNIT MV RADIANT PANEL THERMISTOR 6 4CuT THERMISTOR HEAT EXCHANGER 6 4CuT 6 4CuT CROSS FLOW FAN FIELD PIPING M 6 4CuT FAN MOTOR FIELD PIPING 9 5CuT 9 5CuT REFRIGERANT F...

Page 255: ...6 4CuT COOLING M 6 4CuT 6 4CuT HEATING HEAT EXCHANGER 6 4CuT 6 4CuT 9 5CuT REFRIGERANT FLOW FIELD PIPING 6 4CuT FIELD PIPING 12 7CuT INDOOR UNIT MUFFLER ASSY THERMISTOR ONHEATEXCH 4D056138D FLXS25 35...

Page 256: ...5EAVMB FDXS25E7VMB FDXS35E7VMB FDXS50CVMB FDXS50C7VMB INDOOR UNIT SIROCCO FAN 6 4CuT A CuT FAN MOTOR M REFRIGERANT FLOW HEAT EXCHANGER COOLING HEATING FIELD PIPING 6 4CuT FIELD PIPING A CuT THERMISTOR...

Page 257: ...OM B 9 5CuT FIELD PIPING GAS FIELD PIPING LIQUID LIQUID LINE STOP VALVE LIQUID LINE STOP VALVE LIQUID PIPE THERMISTOR LIQUID PIPE THERMISTOR MUFFLER WITH BRANCH MUFFLER WITH FILTER MUFFLER WITH FILTER...

Page 258: ...65507D PCB 2 PCB 1 S26 S27 S27 S27 FIELD WIRING BLK 1 1 1 10 BLK GRN YLW BLK H1P LED1 H1P LED1 H1P LED1 FG2 BLK BLK 3 H2P LED2 H2P LED2 H2P LED2 FG1 BLK 2 BLK RECTIFIER H3 BLK H3P LED3 H3P LED3 H3P LE...

Page 259: ...MR10 M1F M1S M3S PCB1 PCB4 R1T R2T S1 S49 SW1 V1 X1M BUZZER CAPACITOR FRAME GROUND FUSE PILOT LAMP MAGNETIC RELAY FAN MOTOR SWING MOTOR PRINTED CIRCUIT BOARD THERMISTOR CONNECTOR OPERATION SWITCH VAR...

Page 260: ...RMISTOR S1 S57 S1W S2W 4 X1M E3 Y1E Z1C CONNECTOR OPERATION SWITCH UPWARD AIR FLOW LIMIT SWITCH TERMINAL STRIP EARTH TERMINAL HEAT EX ELECTRONIC EXPANSION VALVE COIL FERRITE CORE 3D069838A SIGNAL RECE...

Page 261: ...THERMISTOR CONNECTOR OPERATION SWITCH SW7 TERMINAL STRIP PCB1 PCB4 R1T R2T S6 S37 X11A X21A S1W X1M 3D033909F PCB2 LED H1P LED H2P S1W LED H3P 2RTH1 R1T t 10 1 S1 1 BRN S26 2 PCB1 S32 R2T t 1 10 BRN S...

Page 262: ...f and then back on again C1 F1M F1U H1P H3P M1F PCB1 Indoor unit Capacitor Thermal protector M1F Embedded Fuse 3 15 250V Light emitting diode Motor fan Printed circuit board PCB2 O1TR R1T R2T S1 S32 R...

Page 263: ...A1P C1 F1U HAP KPR M1F M1P M1S Q1M R1T R2T R3T S1L T1R V1TR X1M X2M RC TC PRINTED CIRCUIT BOARD CAPACITOR M1F FUSE F5A 250V LIGHT EMITTING DIODE SERVICE MONITOR GREEN MAGNETIC RELAY M1P MOTOR INDOOR F...

Page 264: ...IT BOARD OVERLOAD PROTECTOR THERMISTOR SURGE ARRESTER THERMAL FUSE CAPACITOR DIODE BRIDGE FUSE TRIAC INTELLIGENT POWER MODULE LIVE COIL REACTOR COMPRESSOR MOTOR 3D055486E INDOOR L1R X1M 1 1 BRN ORG 2...

Page 265: ...35 50JV1BW S A Refer to Si041256 CTXS15 35K2V1B FTXS20 25K2V1B Refer to Si041258 FTXS35 42 50K2V1B Refer to Si041259 FTXS20 25 35 42 50J2V1B Refer to Si041049 ATXS20 25 35 42 50G2V1B Refer to Si041252...

Page 266: ...contents 08 2011 SiBE121123 First edition 01 2013 SiBE121123_A Model addition 2MXS40 50H3V1B 2AMX40 50G3V1B FTXG25 35 50JV1BA CTXS15 35K2V1B FTXS20 25 35 42 50K2V1B FTX20 25 35J2V1B FDXS25 35E7VMB FD...

Page 267: ...s 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 accesso...

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