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Daikin FVXS09NVJU, Service Manual

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Daikin FVXS09NVJU Service Manual Download Page 103

SiUS091601E

Troubleshooting

Service Diagnosis

92

4.17 Compressor System Sensor Abnormality

Error Code

 

H0

Method of Error 
Detection

The system checks the DC current before the compressor starts.

Error Decision 
Conditions

„

The voltage converted from the DC current before compressor start-up is out of the range 0.5 ~ 
4.5 V.

„

The DC voltage before compressor start-up is below 50 V.

Supposed 
Causes

„

Broken or disconnected harness 

„

Defective outdoor unit PCB

Troubleshooting

Caution

Be sure to turn off the power switch before connecting or disconnecting 
connectors, or parts may be damaged.

NO

(R21670)

YES

Turn off the power. Then, turn on 
the power to restart the system.

YES

NO

Replace the harness.

Replace the outdoor unit 
PCB (main PCB).

Is the harness broken?

Restart operation 

and error displayed 

again?

Check the harness for the 
compressor.

No problem.
Keep on running.

Summary of Contents for FVXS09NVJU

Page 1: ...Service Manual Inverter Pair Wall Mounted Type FTX N Series Floor Standing Type FVXS N Series SiUS091601E Applied Models z Inverter Pair Heat Pump ...

Page 2: ... Contents Inverter Pair Wall Mounted Type FTX N Series Floor Standing Type FVXS N Series zHeat Pump Indoor Unit FTX09NMVJU FVXS09NVJU FTX12NMVJU FVXS12NVJU FTX15NMVJU FVXS15NVJU Outdoor Unit RXL09QMVJU RXL12QMVJU RXL15QMVJU ...

Page 3: ...d Control 19 1 Main Functions 20 1 1 Temperature Control 20 1 2 Frequency Principle 20 1 3 Airflow Direction Control 22 1 4 Fan Speed Control for Indoor Unit 25 1 5 Program Dry Operation 26 1 6 Automatic Operation 27 1 7 Thermostat Control 28 1 8 NIGHT SET Mode 29 1 9 ECONO Operation 29 1 10 Inverter POWERFUL Operation 30 1 11 Clock setting 31 1 12 WEEKLY TIMER Operation FVXS Series 32 1 13 Other ...

Page 4: ...ndoor Unit 75 4 6 Low voltage Detection or Over voltage Detection 76 4 7 Signal Transmission Error Between Indoor Unit and Outdoor Unit 78 4 8 Unspecified Voltage Between Indoor Unit and Outdoor Unit 80 4 9 Outdoor Unit PCB Abnormality 81 4 10 OL Activation Compressor Overload 82 4 11 Compressor Lock 84 4 12 DC Fan Lock 85 4 13 Input Overcurrent Detection 86 4 14 Four Way Valve Abnormality 87 4 15...

Page 5: ...Power Module Check 111 Part 7 Trial Operation and Field Settings 113 1 Pump Down Operation 114 2 Forced Cooling Operation 115 3 Trial Operation 116 4 Field Settings 118 4 1 Temperature Display Switch 118 4 2 When 2 Units are Installed in 1 Room 119 4 3 Jumper and Switch Settings 121 4 4 Facility Setting Switch cooling at low outdoor temperature 121 5 Silicone Grease on Power Transistor Diode Bridg...

Page 6: ...rding Safety of Workers Warning Do not store equipment in a room with fire sources e g naked flames gas appliances electric heaters Be sure to disconnect the power cable from the socket before disassembling equipment for repair Working on equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspec...

Page 7: ...uipment failure Do not mix air or gas other than the specified refrigerant R 32 R 410A R 22 in the refrigerant system If air enters the refrigerant system an excessively high pressure results causing equipment damage and injury Warning Caution Do not repair electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner wi...

Page 8: ...cable and lead wires are scratched or have deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit fo...

Page 9: ...ake sure that there is no leak If the leaking point cannot be located and the repair work must be stopped be sure to pump down and close the service valve to prevent refrigerant gas from leaking into the room Refrigerant gas itself is harmless but it may generate toxic gases when it contacts flames such as those from fan type and other heaters stoves and ranges When relocating the equipment make s...

Page 10: ... generation fire or an electrical shock If the installation platform or frame has corroded replace it A corroded installation platform or frame may cause the unit to fall resulting in injury Check the earth grounding and repair it if the equipment is not properly earthed grounded Improper earth grounding may cause an electrical shock Be sure to measure insulation resistance after the repair and ma...

Page 11: ...ion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note A Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Reference A Reference guides the reader to other places in this binder or in this manual w...

Page 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2 ...

Page 13: ...g error check function Wide angle louvers vertical blade z z Anti corrosion treatment of outdoor heat exchanger z z Auto swing up and down z z Auto swing right and left Flexibility Multi split split type compatible indoor unit 3 D airflow COMFORT AIRFLOW operation z z H P C O compatible indoor unit Comfort Control Auto fan speed z z Flexible power supply correspondence Indoor unit quiet operation ...

Page 14: ... function Wide angle louvers vertical blade z Anti corrosion treatment of outdoor heat exchanger z Auto swing up and down z Auto swing right and left Flexibility Multi split split type compatible indoor unit z 3 D airflow COMFORT AIRFLOW operation H P C O compatible indoor unit Comfort Control Auto fan speed z Flexible power supply correspondence Indoor unit quiet operation z Chargeless 32 8 ft 10...

Page 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5 ...

Page 16: ...ward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 25 0 23 0 23 0 21 0 28 0 25 0 25 0 23 Power Consumption Rated W 28 28 25 25 31 31 28 28 Power Factor Rated 53 8 52 9 52 3 51 8 53 2 53 9 53 8 52 9 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 11 1 4 30 5 16 8 3 4 285 770 ...

Page 17: ...Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 23 0 21 0 25 0 23 Power Consumption Rated W 33 33 38 38 Power Factor Rated 69 0 68 3 73 1 71 8 Temperature Control Microcomputer Control Dimensions H W D in mm 11 5 8 39 10 3 8 295 990 263 Packaged Dimensions H W D in mm 14 9 16 42 1 2 15 3 8 370 1 080 390 Weight Lbs kg 27 12 Gross Weight Lbs kg 37 17 Sound Pressure Leve...

Page 18: ...t Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 14 0 13 0 15 0 14 0 14 0 13 0 15 0 14 Power Consumption Rated W 15 15 17 17 15 15 17 17 Power Factor Rated 51 5 50 2 54 5 52 8 51 5 50 2 54 5 52 8 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D in mm 23 5 8 27 9 16 8 1 4 600 700 210 23 5 8 27 ...

Page 19: ...Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 19 0 17 0 21 0 19 Power Consumption Rated W 27 27 34 34 Power Factor Rated 68 3 69 1 77 8 77 8 Temperature Control Microcomputer Control Dimensions H W D in mm 23 5 8 27 9 16 8 1 4 600 700 210 Packaged Dimensions H W D in mm 27 3 8 30 15 16 11 696 786 280 Weight Lbs kg 31 14 Gross Weight Lbs kg 40 18 Sound Pressure Level...

Page 20: ...ard Connector Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 10 1 1 FTX09 12NMVJU 10 1 2 FTX15NMVJU 12 1 3 FVXS09 12 15NVJU 14 2 Outdoor Unit 16 2 1 RXL09QMVJU 16 2 2 RXL12QMVJU 17 2 3 RXL15QMVJU 18 ...

Page 21: ...ontrol PCB PCB1 1 S6 Connector for swing motor horizontal blade 2 S26 Connector for display PCB 3 S32 Connector for indoor heat exchanger thermistor 4 S200 Connector for DC fan motor 5 H1 H2 H3 FG Connector for terminal board 6 FU1 Fuse 3 15 A 250 V 7 V2 Varistor FG S32 S26 H3 H2 H1 S6 S200 2P341918 9 FU1 V2 ...

Page 22: ...are the names on the appropriate wiring diagram 1 S27 Connector for control PCB 2 SW1 S1W Forced cooling operation ON OFF button Refer to page 115 for detail 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 RTH1 R1T Room temperature thermistor S27 SW1 Solder side LED2 LED1 RTH1 3P185701 4 LED3 is not mounted ...

Page 23: ...ram 12 1 2 FTX15NMVJU Control PCB PCB2 1 S6 Connector for swing motor horizontal blade 2 S26 Connector for display PCB 3 S32 Connector for indoor heat exchanger thermistor 4 S200 Connector for DC fan motor 5 S900 Connector for filter PCB S26 S900 3P380931 1 S6 S32 S200 ...

Page 24: ... board 2 S800 Connector for control PCB 3 FG HE Connector for ground 4 FU1 Fuse 3 15 A 250 V 5 V2 Varistor 3P380932 1 FG S800 V2 HE S100 FU1 1 S27 Connector for control PCB 2 SW1 S1W Forced cooling operation ON OFF button Refer to page 115 for detail 3 LED1 H1P LED for operation green 4 LED2 H2P LED for timer yellow 5 RTH1 R1T Room temperature thermistor S27 SW1 Solder side LED2 LED1 RTH1 3P185701...

Page 25: ...rvice PCB 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 for terminal board 10 E1 Terminal for ground wire 11 JA Address setting jumper Refer to page 119 for detail 12 JB Fan speed setting when compressor stops for thermostat OFF Refer to page 121 f...

Page 26: ...T Room temperature thermistor S49 RTH2 3P191450 1 1 S27 Connector for control PCB 2 SW2 S2W 4 Switch for upward airflow limit setting Refer to page 121 for detail Keep the other switches as factory setting 3 SW4 S4W Switch for airflow selection Refer to page 23 for detail S27 SW4 SW2 4 3P191448 1 1 S47 Connector for control PCB 2 SW1 S1W Forced cooling operation ON OFF button 3 LED1 H1P LED for op...

Page 27: ...Connector for overload protector 4 S71 Connector for DC fan motor 5 S80 Connector for four way valve coil 6 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 7 HL1 HN1 S Connector for terminal board 8 E1 E2 Terminal for ground wire 9 HR1 HR2 Connector for reactor 10 FU1 FU2 Fuse 3 15 A 250 V 11 FU3 Fuse 20 A 250 V 12 J6 Jumper for facility setting Refer to pag...

Page 28: ... protector 3 S70 Connector for DC fan motor 4 S80 Connector for four way valve coil 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 HL1 HN1 S Connector for terminal board 7 E1 E2 Terminal for ground wire 8 U V W Connector for compressor 9 FU1 FU2 Fuse 3 15 A 250 V 10 FU3 Fuse 20 A 250 V 11 J6 Jumper for facility setting Refer to page 121 for detail 12 LE...

Page 29: ...load protector 3 S70 Connector for DC fan motor 4 S80 Connector for four way valve coil 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 HL1 HN1 S Connector for terminal board 7 E1 E2 Terminal for ground 8 U V W Connector for compressor 9 FU1 FU2 Fuse 3 15 A 250 V 10 FU3 Fuse 30 A 250 V 11 J6 Jumper for facility setting Refer to page 121 for detail 12 LED...

Page 30: ...r POWERFUL Operation 30 1 11 Clock setting 31 1 12 WEEKLY TIMER Operation FVXS Series 32 1 13 Other Functions 38 2 Thermistor Functions 39 3 Control Specification 40 3 1 Mode Hierarchy 40 3 2 Frequency Control 41 3 3 Controls at Mode Changing Start up 43 3 4 Discharge Pipe Temperature Control 45 3 5 Input Current Control 46 3 6 Freeze up Protection Control 47 3 7 Heating Peak cut Control 47 3 8 Ou...

Page 31: ...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 The target frequency is adapted by additional parameters in the following cases Frequency restrictions Initial settings Forced cooling operation Inverter Principle To regulate the capacity a frequency control is needed The inv...

Page 32: ...ng 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 maximum frequency Forced Cooling Operation Refer to page 115 for details Refrigerant circulation rate high high f low f freq variable Refrigerant circulation rate low high speed low speed R2812 Amount of heat exch...

Page 33: ...rge flap directs airflow downward to spread the warm air to the entire room Wide Angle Louvers The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees comfortable air distribution Auto Swing The following tables explain the auto swing process for cooling dry heating and fan FTX Series FVXS Series Flap up and down Cooling Dry Heating Fan 09 12 class 15 class Flap...

Page 34: ...ion switch Open the front panel Caution Before opening the front panel be sure to stop the operation and turn the breaker off Do not touch the aluminum fins indoor heat exchanger inside of the indoor unit as it may result in injury Cooling Heating 09 12 class 15 class R21186 0 R21187 65 R21861 10 Air is blown from the upper outlet only Front panel The blow pattern is automatically decided dependin...

Page 35: ...r air outlets in order to reach the set temperature quickly When the room has become fully cool or when 1 hour has passed since turning on the air conditioner Air is blown only from the upper air outlet so that air does not come into direct contact with people and indoor temperature is equalized Heating When the operation is activated or when air emitted is of low temperature Air is blown only fro...

Page 36: ... fan speed control for cooling The upper limit is M tap for 30 minutes from the operation start Heating In heating operation the fan speed is regulated according to the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature Note The fan stops during defrost control COMFORT AIRFLOW Operation FTX Series The fan speed is controlled auto...

Page 37: ...unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Thermostat turns on also when the room temperature is in the zone B for 10 min Room thermistor temperature at start up Target temperature X Thermostat OFF point Y Thermostat ON point Z 24 C or more 75 2 F or more Room thermistor temperature at start up X 2 5 C X 4 5 F X 0 5 C X 0 ...

Page 38: ...temperature Tt Ts 18 30 C 64 4 86 F 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 0 F 3 Thermostat ON OFF point and operation mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 3 0 C 5 4 F 2 Cooling Heating switching point Tr Tt 3 0 C 5 4 F 3 Thermostat ON OFF point is the same as the ON ...

Page 39: ...except A The monitoring time has passed while the temperature difference is in the zone B Cooling 10 minutes Dry 7 5 minutes Heating 10 seconds Cooling Dry Heating FTX Series FVXS Series Refer to Temperature Control on page 20 for details Zone B Zone A OFF ON Zone C Room thermistor temperature target temperature 1 5 C 2 7 F R22426 Cooling 0 5 C 0 9 F Dry 0 5 C 0 9 F Cooling 2 0 C 3 6 F Dry 2 5 2 0...

Page 40: ...apacity does not allow the use of multiple electrical devices and air conditioners It can be easily activated by pushing ECONO button on the wireless remote controller Detail When this function is activated the maximum capacity also decreases The remote controller can send the ECONO command when the unit is in cooling heating dry or automatic operation This function can only be set when the unit i...

Page 41: ...ation in cooling Note POWERFUL operation cannot be used together with ECONO or COMFORT AIRFLOW operation Operation mode Fan speed Target temperature COOL H tap A rpm 18 C 64 4 F DRY Dry rotating speed A rpm Lowered by 2 5 C 4 5 F HEAT H tap A rpm 31 C 87 8 F FAN H tap A rpm AUTO Same as cooling heating in POWERFUL operation The target temperature is kept unchanged R19193 Target temp Fan A rpm 18 C...

Page 42: ... the clock to the current day of the week 3 Press Clock button blinks 4 Press Select or Select button to adjust the clock to the present time Holding down Select or Select button increases or decreases the time display rapidly 5 Press Clock button to set the clock Point the remote controller at the indoor unit when pressing the button blinks and clock setting is completed R19926 0 00 SELECT button...

Page 43: ...ram 2 program 3 program 4 ON OFF ON OFF Saturday No timer settings Sunday Make timer settings for programs 1 4 8 00 10 00 19 00 21 00 81 F 27 C 81 F 27 C 77 F 25 C ON OFF OFF ON program 1 program 2 program 3 program 4 OFF OFF ON ON Tuesday to Friday Use the copy mode to make settings for Tuesday to Friday because these settings are the same as those for Monday Up to 4 reservations per day and 28 r...

Page 44: ... Setting Pressing puts the sequence in reverse 5 Press 2 Press to select the desired day of the week and reservation number In case the reservation has already been set selecting blank deletes the reservation Proceed to STEP 9 if blank is selected To return to the day of the week and reservation number setting press The ON OFF TIMER mode will be set and the time blink Make sure the day of the week...

Page 45: ...king of the OPERATION lamp is displayed on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights orange A reservation made once can be easily copied and the same settings used for another day of the week Refer to Copy mode Notes on WEEKLY TIMER operation Do not forget to set the clock on the remote controller first The day of the week ON OFF TIMER mode time and set temperature only...

Page 46: ...d to another day of the week The whole reservation of the selected day of the week will be copied The whole reservation of the selected day of the week will be copied The reservation will be copied to the selected day of the week The whole reservation of the selected day of the week will be copied To continue copying the settings to other days of the week repeat STEP 4 and STEP 5 is displayed on t...

Page 47: ...umber and press The mode is switched to setting mode Proceed to Setting mode STEP 4 is displayed on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights orange disappears from the LCD The TIMER lamp goes off To reactivate the WEEKLY TIMER operation press again If a reservation deactivated with is activated once again the last reservation mode will be used Press to select the day o...

Page 48: ...be deleted 3 Hold for about 5 seconds The reservation of the selected day of the week will be deleted 4 Press If there are still other reservations WEEKLY TIMER operation will be activated All reservations Hold for about 5 seconds with the normal display 2 Press to select the day of the week and the reservation number to be deleted and or blink Pressing changes the ON OFF TIMER mode in sequence Se...

Page 49: ...ress ON OFF button once to start operation Press once again to stop it ON OFF button is useful when the remote controller is missing or the battery has run out Forced Cooling Operation Forced cooling operation can be started by pressing ON OFF button for 5 to 9 seconds while the unit is not operating Refer to page 115 for details Note When ON OFF button is pressed for 10 seconds or more the forced...

Page 50: ...ure used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is used for detecting disconnection of the discharge pipe thermistor 3 Indoor Heat Exchanger Thermistor 1 The indoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the targ...

Page 51: ... installation and servicing Detail Heat Pump Model Note Unless specified otherwise a dry operation command is regarded as cooling operation Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Power transistor test mode Normal operation mode Fan Cooling includes drying Heating Heating Defrosting Stop indoor unit OFF Preheating control Discharging from...

Page 52: ... cut freeze up protection defrost control 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency Command frequency Limit...

Page 53: ...requency is lowered When the D value is high the frequency is increased 3 Frequency control when other controls are functioning When frequency is dropping Frequency control is carried out only when the frequency drops For limiting lower limit Frequency control is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI control The frequency upper and lower limits are se...

Page 54: ...temperature 85 C 185 F OFF condition Discharge pipe temperature 2 C 35 6 F Radiation fin temperature 90 C 194 F Control B ON condition Discharge pipe temperature 10 C 50 0 F Radiation fin temperature 85 C 185 F OFF condition Discharge pipe temperature 12 C 53 6 F Radiation fin temperature 90 C 194 F 3 3 2 Four Way Valve Switching Outline The four way valve coil is energized not energized depending...

Page 55: ...oor temperature is above C C in heating the frequency decreases depending on the outdoor temperature 3 3 4 3 Minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off The function is not activated when defrosting 3 3 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is set as follows The function is not activate...

Page 56: ...ing further Detail 09 class 12 15 class C F C F A 110 230 0 110 230 0 B 103 217 4 103 217 4 C 98 208 4 101 5 214 7 D 93 199 4 100 212 0 E 88 190 4 95 203 0 Zone Control Stop zone When the temperature reaches the stop zone the compressor stops Dropping zone The upper limit of frequency decreases Keep zone The upper limit of frequency is kept Up zone The upper limit of frequency increases Reset zone...

Page 57: ...mpressor is stopped Dropping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Limitation of current dropping and stop value according to the outdoor temperature The current...

Page 58: ...eat exchanger temperature The values might drop when the outdoor temperature is low to protect the compressor R22994 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Dropping zone Stop zone 13 C 55 4 F Reference 7 C 44 6 F 5 C 41 0 F 3 C 37 4 F 0 C 32 0 F 09 12 class 15 class C F C F A 59 138 2 60 140 0 B 55 131 0 54 129 2 C 52 125 6 51 123 8 D 50 122 0 49 120 2 E 45 113 0...

Page 59: ...ll as normal operation 5 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 6 Fan speed control during POWERFUL operation The rotation speed of the outdoor fan is increased during POWERFUL operation 7 Fan speed control during indoor outdoor unit quiet operation The rotation speed of the outdoor fan is reduced ...

Page 60: ...control of accumulated time have passed since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with the outdoor heat exchanger temperature B C The same value continues 09 class 12 class 15 class A minute 20 20 25 B C 2 20 2 20 6 30 F 35 6 68 0 35 6 68 0 42 8 86 0 C Hz 64 40 48 D Hz 64 40 42 E seconds 40 40 60 F seconds 60 60 60 G se...

Page 61: ... discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Detail The followings are the examples of electronic expansion valve control which function in each operation mode Available Not available Control Status Starting operation control Control when the frequency changes Target discharge pipe temperature control Discharge pipe thermistor disconnection ...

Page 62: ...e temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 3 11 7 Discharge Pipe Thermistor Disconnection Control Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature If the discharge p...

Page 63: ...justed so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pipe temperature The electronic expansion valve opening and the target discharge pipe temperature are adjusted every A seconds The opening degree of the electronic expansion valve is adjusted by the followings Target discharge pipe tempera...

Page 64: ...ermistor 3 12 2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor Detail If the OL compressor head temperature exceeds 120 130 C 248 266 F depending on the model the system shuts down the compressor If the inverter current exceeds 12 0 18 0 A depending on the model the system shuts down the compressor ...

Page 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57 ...

Page 66: ...each section is shown with all its displays on for the purpose of explanation R22996 Signal transmitter To use the remote controller aim the transmitter at the indoor unit If there is anything blocking the signals between the unit and the remote controller such as a curtain the unit may not operate The maximum transmission distance is about 23 ft 7 m Receiver OFF button Press this button to stop t...

Page 67: ... COMFORT 2 button Starts COMFORT AIRFLOW operation ON TIMER button Adjusts the ON TIMER setting The timer can be set 1 12 hours In indoor unit quiet operation operation sound becomes weak The airflow rate also decreases In DRY operation the airflow rate setting is not available FAN setting button Selects the airflow rate setting every time you press this button AUTO Indoor unit quiet Airflow rate ...

Page 68: ... once again to stop it Temperature adjustment buttons Displays the current settings In this illustration each section is shown with all its displays on for the purpose of explanation To use the remote controller aim the transmitter at the indoor unit If there is anything blocking the signals between the unit and the remote controller such as a curtain the unit may not operate The maximum transmiss...

Page 69: ...n 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 TIMER setting Clock 5 button It changes the ON OFF TIMER and WEEKLY TIMER settings Timer Cancel button Cancels the timer setting Cannot be used for the WEEKLY TIMER operation Press this button and adjust the day and time with the Select button Press this butto...

Page 70: ... 81 4 10 OL Activation Compressor Overload 82 4 11 Compressor Lock 84 4 12 DC Fan Lock 85 4 13 Input Overcurrent Detection 86 4 14 Four Way Valve Abnormality 87 4 15 Discharge Pipe Temperature Control 89 4 16 High Pressure Control in Cooling 90 4 17 Compressor System Sensor Abnormality 92 4 18 Position Sensor Abnormality 93 4 19 Thermistor or Related Abnormality Outdoor Unit 95 4 20 Electrical Box...

Page 71: ...SiUS091601E Service Diagnosis 60 5 11 Outdoor Fan System Check 109 5 12 Main Circuit Short Check 109 5 13 Power Module Check 111 ...

Page 72: ...lamp OFF Check the outdoor temperature Heating operation is not available when the outdoor temperature is 25 CWB 13 FWB or higher and cooling operation is not available when the outdoor temperature is below 10 CDB 50 FDB Diagnose with remote controller indication 69 The unit operates but does not cool or does not heat Check for wiring and piping errors in the connection between the indoor unit and...

Page 73: ...nsmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages FTX Series FVXS Series 2 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the microcomputer works in order the LED A blinks However the LED A turns OFF while the standby electricity saving function is activated and the power supply is O...

Page 74: ... codes 2 To return to the normal mode hold TIMER CANCEL 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 try method 2 Refer to page 64 No Code No Code No Code 1 00 16 A3 31 UF 2 A5 17 H8 32 UH 3 E7 18 H9 33 P4 4 F3 19 C9 34 H7 5 F6 20 CC 35 U2 6 L3 21 ...

Page 75: ...ime 5C is displayed on the LCD 2 Select 5C service check with TEMP or TEMP button 3 Press FAN button to enter the service check mode 00 is displayed and the left side number blinks 4 Press TEMP or TEMP button and change the number until you hear the two consecutive beeps or the long beep R21666 R21059 R21667 R21061 R21668 ...

Page 76: ...or TEMP 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 corresponds with the error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code 9 Determine the error code The numbers indicated wh...

Page 77: ...ding codes 2 To return to the normal mode hold Timer Cancel 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 try method 2 Refer to page 67 R23004 ARC466 Series Timer Cancel button No Code No Code No Code 1 00 14 U0 27 UA 2 A5 15 C7 28 UH 3 E7 16 A3 29 ...

Page 78: ...the same time 5C is displayed on the LCD 2 Select 5C service check with Temp or Temp button 3 Press Mode button to enter the service check mode The left side number blinks 4 Press Temp or Temp button and change the number until you hear the two consecutive beeps or the long beep R11669 R11821 R11672 R11670 R11671 ...

Page 79: ... 7 Press Temp or Temp 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 corresponds with the error code but the right side number does not long beep Both the left side and right side numbers correspond with the error code 9 Determine the error code The number...

Page 80: ... related abnormality 75 C9 Room temperature thermistor or related abnormality 75 Outdoor Unit E1 Outdoor unit PCB abnormality 81 E5 OL activation compressor overload 82 E6 Compressor lock 84 E7 DC fan lock 85 E8 Input overcurrent detection 86 EA Four way valve abnormality 87 F3 Discharge pipe temperature control 89 F6 High pressure control in cooling 90 H0 Compressor system sensor abnormality 92 H...

Page 81: ...r supply voltage Start operation Voltage as rated Error repeats Check the power supply voltage Start operation Voltage as rated Error repeats Error repeats Combination of the indoor and outdoor unit matched YES NO NO YES NO NO YES R20486 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...

Page 82: ...heating operation the indoor heat exchanger temperature is above about 60 C 140 F depending on the model 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 Troubleshooting Check No 01 Refer to P 101 NO NO NO Check No 01 Check the indoor heat exchanger thermisto...

Page 83: ...l 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 motor rotation speed Supposed Causes Remarkable decrease in power supply voltage Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the ...

Page 84: ... 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 voltage Check the indoor unit PCB for rotation pulse Fan rotates smoothly Resistance OK Is the motor control voltage 15 VDC generated Correct the connection Remove the foreign matters Replace the indoor fan motor Replace the indoor unit PCB ...

Page 85: ...r before reconnecting the connector Replace the indoor fan motor Replace the indoor unit PCB control PCB Replace the indoor unit PCB control PCB Does the fan rotate smoothly Does the fan rotate Motor power supply voltage 310 340 VDC Turn off the power and rotate the fan by hand Turn on the power and start operation Check No 02 Check the output of the fan motor connector R22444 YES NO YES NO YES NO...

Page 86: ...pposed Causes Disconnection of connector Thermistor corresponding to the error code is defective Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 101 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor YES R21870 NO Check No 01 Check the thermistor resistance value YES NO Caution Correct the connection Replace the defective thermistor Replace the indoor unit PCB cont...

Page 87: ...n the model The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer over 458 500 V depending on the model The compressor stops if the error occurs and restarts automatically after 3 minute standby Supposed Causes Power supply voltage is not as specifi...

Page 88: ...S YES YES Reconnect the harness Check the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn on the power System restarted Repeat a few times Loose or disconnected NO NO Replace the outdoor fan motor and the outdoor unit PCB m...

Page 89: ...ormal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage is not as specified Reduction of power supply voltage Wiring error Breaking of the connecting wires between the indoor and outdoor units wire No 3 Defective outdoor unit PCB Short circuit inside the fan motor winding Defective i...

Page 90: ...etween the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there any wiring error Check the indoor unit outdoor unit connection wires Check the LED A on the outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Before you check the LED A cancel the standby electricity saving function...

Page 91: ...rconnected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R20435 Caution NO YES YES NO Match the compatible models OK Correct the connection Check the code numbers 2P012345 for example of the indoor and outdoor unit PCB with the Parts List If not matched change for the correct PCB Are the conne...

Page 92: ...tary drop of voltage Momentary power failure Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Continuously ON or OFF Blink YES R21201 NO Replace the outdoor unit PCB main PCB Ground the system Zero cross signal abnormality Replace the outdoor unit PCB main PCB Check if the outdoor unit is grounded Is LED A blinking G...

Page 93: ...own Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe thermistor Disconnection of connector S40 Disconnection of 2 terminals of OL Q1L Defective OL Q1L Broken OL harness Defective electronic expansion valve or coil Defective four way valve or coil Defective outdoor unit PCB Refrigerant sho...

Page 94: ...place the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Replace the four way valve or the coil Replace the outdoor unit PCB main PCB Discharge pipe thermistor disconnected Check No 01 Check the discharge pipe thermistor Check No 13 Check the four way valve Check No 14 Check the refrigerant line Check No 12 Check the elect...

Page 95: ... the harnesses U V and W R21067 Caution NO YES YES NO NO YES NO YES Check No 15 Check with the inverter analyzer Turn off the power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Correct the power supply or replace the outdoor unit PCB main PCB Open the stop valve Inver...

Page 96: ...n Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 107 R21669 Caution YES YES NO YES NO NO YES NO NO Turn on the power Rotate the fan YES Check No 16 Check the rotation pulse input on the outdoor unit PCB main PCB Turn off the power and reconnect the connector Remove the foreign matters Replace the outdoor fan motor Replace the fuse Replace the outdoor unit PCB...

Page 97: ...eck No 18 Refer to P 108 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupted by an input overcurrent after the wires have been disconnected and reconnected for part replacement check the wiring again R21863 NO YES YES NO Start operation and measure ...

Page 98: ...Dry A B 5 C A B 9 F Heating B A 5 C B A 9 F A Room thermistor temperature B Indoor heat exchanger temperature The same value continues If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of four way valve coil Defective four way valve coil or harness Defective outdoor unit PCB Defective thermistor Re...

Page 99: ...dust clogged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R20405 Refrigerant shortage Water mixed Stop valve Four way valve coil disconnected loose Harness disconnected Any thermistor disconnected Check No 01 Check the thermistors Check No 14 Check the refrigerant line Check No 13 Check the four way va...

Page 100: ...oor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 101 Check No 12 Refer to P 103 Check No 14 Refer to P 104 A B C F C F 110 230 88 190 4 A B C F C F 110 230 95 203 R20417 Caution NG OK OK OK NG NG Discharge pipe thermi...

Page 101: ...it Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rise above 59 61 C 138 2 141 8 F depending on the model The error is cleared when the temperature drops below 51 52 C 123 8 125 6 F depending on the model Supposed Causes The installation space is not large enough Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective elect...

Page 102: ...oor unit PCB main PCB Replace the electronic expansion valve or the coil Replace the outdoor unit PCB main PCB Change the installation location or direction Clean the outdoor heat exchanger Check the installation space NG OK OK NG NG OK OK OK NG NG Check No 19 Check the outdoor fan Check No 18 Check the discharge pressure Check No 12 Check the electronic expansion valve Check No 01 Check the outdo...

Page 103: ...voltage before compressor start up is below 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO R21670 YES Turn off the power Then turn on the power to restart the system YES NO Replace the harness Replace the outdoor unit PCB main PCB Is ...

Page 104: ... the position detection circuit Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Power supply voltage is not as specified Disconnection of the compressor harness Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is outside th...

Page 105: ... Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connected as specified Replace the outdoor unit PCB main PCB Correct the power supply or replace the outdoor unit PCB main PCB Replace the compressor Reconnect the electrical components or compressor harness...

Page 106: ...power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Thermistor corresponding to the error code is defective Defective heat exchanger thermistor in the case of J3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation...

Page 107: ...tor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Replace the indoor heat exchanger thermistor Replace the outdoor unit PCB main PCB Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check No 01 Check ...

Page 108: ...Troubleshooting Check No 17 Refer to P 108 Check No 19 Refer to P 109 A B C C F C F C F 09 class 82 179 6 65 149 70 158 12 class 90 194 75 167 81 177 8 15 class 90 194 64 147 2 81 177 8 Caution WARNING To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C and stops when the radiation fin temperature drops below B R22998 YES NO YES NG NO OK NO YES...

Page 109: ...oor unit PCB Troubleshooting Check No 17 Refer to P 108 Check No 19 Refer to P 109 Note Refer to Silicone Grease on Power Transistor Diode Bridge on page 122 for details A B C F C F 09 class 99 210 2 70 158 12 class 90 194 84 183 2 15 class 100 212 57 134 6 Caution Turn off the power Then turn on the power to restart the system Be sure to turn off the power switch before connecting or disconnectin...

Page 110: ... rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Poor installation condition Closed stop valve Defective power module Wrong internal wiring Abnormal...

Page 111: ...f the same error occurs Check the power supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary drop of power supply voltage Compressor overload Short circuit Check the installation condition Check with the inverter analyzer Check the power module Not a malfunction Keep observing Check the connectors and other comp...

Page 112: ... measure the resistance Thermistor temperature Resistance kΩ C F Room temperature thermistor Other thermistors 20 4 73 4 197 8 15 5 57 0 148 2 10 14 44 7 112 1 5 23 35 3 85 60 0 32 28 2 65 93 5 41 22 6 51 14 10 50 18 3 39 99 15 59 14 8 31 52 20 68 12 1 25 02 25 77 10 0 20 00 30 86 8 2 16 10 35 95 6 9 13 04 40 104 5 8 10 62 45 113 4 9 8 707 50 122 4 1 7 176 R25 C 77 F 10 kΩ B 3435 K R25 C 77 F 20 k...

Page 113: ...on and stop the operation 3 Check if the Hall IC generates the rotation pulse 4 times when the fan motor is manually rotated once between the pins 1 3 Check No 02 FVXS Series 1 Check the connection of connector 2 Check motor power supply voltage output pins 4 7 3 Check motor control voltage pins 4 3 4 Check rotation command voltage output pins 4 2 5 Check rotation pulse input pins 4 1 R11979 12 11...

Page 114: ...tor is correctly connected to the PCB 2 Turn the power off and on again and check to see if the EV generates a latching sound 3 If the EV does not generate a latching sound in the above step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 1 6 2 6 3 6 and 4 6 between the pins 1 5 2 5 3 5 4 5 for the 5P connector models If there is no co...

Page 115: ...g Dry Defrost Not energized Heating energized Replace the outdoor unit PCB main PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 Ω S80 voltage at 208 230 VAC with compressor on Fig 1 R14674 Fig 1 Compressor ON Voltage at S80 208 230 VAC Time Refrigerant system check Check for refrigerant leakage See the service diagnosis on refrigerant shor...

Page 116: ...re to turn off the power Step 2 Install an inverter analyzer instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to ...

Page 117: ...ower module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The power module is united with the main PCB If OK in Check No 22 check if there is any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB Caution 1 When the output frequency is low the LEDs bli...

Page 118: ...ns 2 4 is 0 6 5 VDC 5 Keep operation off and power off Connect the connector S70 or S71 6 Check whether 4 rotation pulses 0 15 VDC are input at the pins 1 4 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB main PCB If NG in step 4 Defective Hall IC Replace the outdoor fan ...

Page 119: ...y dirty 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 temperature The outdoor temperature should be within the operation range R19385 YES YES YES NO NO NO NO YES Is the air filter or indoor outdoor heat exchanger dirty Is the connection pipe deformed Is the...

Page 120: ...ing to the table below If the resistance is or less than 1 kΩ short circuit occurs on the main circuit 09 class R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system Reconnect the connector Is the outdoor fan running Fan motor lead wire connector disconnected Go to Check No 16 Positive terminal of digital multimeter 2 3 4 2 3 1 Negative terminal of digital multimeter ...

Page 121: ...SiUS091601E Check Service Diagnosis 110 12 class 15 class Multimeter R23024 R20701 1 2 3 4 Multimeter ...

Page 122: ...on on the connector Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter Evaluate the measurement results referring to the following table 09 class Positive terminal of digital multimeter Power module UVW Power module UVW Negative terminal of digital multimeter UVW Power module UVW Power module Resistance i...

Page 123: ...SiUS091601E Check Service Diagnosis 112 12 class 15 class R23025 Pin 24 Pin 23 U Pin 22 V Pin 21 W Pin 20 R20704 W V U DC_P1 DC_N1 ...

Page 124: ... 114 2 Forced Cooling Operation 115 3 Trial Operation 116 4 Field Settings 118 4 1 Temperature Display Switch 118 4 2 When 2 Units are Installed in 1 Room 119 4 3 Jumper and Switch Settings 121 4 4 Facility Setting Switch cooling at low outdoor temperature 121 5 Silicone Grease on Power Transistor Diode Bridge 122 ...

Page 125: ...tail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation Refer to Forced Cooling Operation on page 115 for details Gas stop valve Valve cap Close Liquid stop valve Service port R1...

Page 126: ...art Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds Command frequency 09 class 58 Hz 12 15 class 30 Hz End The forced cooling operation ends when any of the following conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 on the indoor unit again 3 Press ON OFF button on the remote con...

Page 127: ...ammable temperature 30 C 86 F Trial operation may be disabled in either operation mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 28 C 78 82 F in cooling 20 24 C 68 75 F in heating operation For protection the system does not start for 3 minutes after it is turned off ARC480 Series 1 Press the center of TEMP button and OFF button on...

Page 128: ...er of Temp button and Mode button at the same time 3 Select T trial operation with Temp or Temp button 4 Press Mode button to start the trial operation 5 Press Mode button and select operation mode 6 Trial operation terminates in about 30 minutes and switches into normal mode To quit trial operation press On Off button R11676 2 4 5 1 6 2 3 3 ...

Page 129: ...ture display Press TEMP and ON TIMER buttons simultaneously for 5 seconds to change the unit of temperature display You can also change the unit of temperature display by pressing TEMP and buttons simultaneously for 5 seconds ARC466A21 Press the upper side of Temp button and On button at the same time for 5 seconds to change the unit of temperature display R14477 R22009 ...

Page 130: ...controller at the same time 4 Select A address setting with TEMP or TEMP button 5 Press FAN button to enter the address setting mode The indoor unit operation lamp blinks for 1 minute 6 Press indoor unit ON OFF button while the operation lamp is blinking 7 Press FAN button on the remote controller for 5 seconds to return to the normal mode Caution Replace the remote controller if you accidentally ...

Page 131: ...t exchanger thermistor 6 Remove the shield plate 8 tabs 7 Cut the address setting jumper JA on the indoor unit PCB Caution Replace 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 Connector S42 Connector S41 Connector S1 4 Remove the screw 5 Indoor heat exchanger thermistor 3 6 Shield plate R21129 Sensor...

Page 132: ...f the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings 3 Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used A humidifier might caus...

Page 133: ... bridge Detail 1 Wipe off the old silicone grease completely 2 Apply the silicone grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode bridge 4 Make sure that the heat radiation parts are firmly contacted to the radiation fin Note Smoke emission may be caused by bad heat radiation when the silicone grease is not appropriately appl...

Page 134: ...SiUS091601E 123 Appendix Part 8 Appendix 1 Piping Diagrams 124 1 1 Indoor unit 124 1 2 Outdoor Unit 125 2 Wiring Diagrams 127 2 1 Indoor Unit 127 2 2 Outdoor Unit 130 ...

Page 135: ...CuT HEAT EXCHANGER CROSS FLOW FAN FAN MOTOR THERMISTOR ON HEAT EXCH FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT 1 2 CuT REFRIGERANT FLOW 4D091769C INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER 1 4 CuT 9 32 CuT 1 4 CuT 1 4 CuT 1 4 CuT M FAN MOTOR TURBO FAN 1 4 CuT 3 8 CuT FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT THERMISTOR ONHEATEXCH REFRIGERANT FLOW COOLING HEATING 4D091794 1 4 CuT 9 32 CuT 1 4 CuT 1 4 C...

Page 136: ...STOR GAS STOP VALVE WITH SERVICE PORT FOUR WAY VALVE ON HEATING LIQUID STOP VALVE FIELD PIPING 1 4 CuT FIELD PIPING 3 8 CuT 3D100008 OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT CAPILLARY TUBE 5 32 CuT 1 4 CuT 1 4 CuT 1 4 CuT 9 32 CuT 1 2 CuT CAPILLARY TUBE 9 32 CuT 5 32 CuT 9 32 CuT 9 32 CuT 1 4 CuT 9 32 CuT DISTRIBUTOR M 3 8 CuT PROPELLER FAN 1 2 CuT 3 8 CuT 3 8 CuT 3 16 CuT 1 2 CuT 5 16 CuT 1 2 CuT MUF...

Page 137: ...NG HEATING M PROPELLER FAN STRAINER 1 2 CuT 1 4 CuT 1 2 CuT 1 2 CuT MUFFLER 5 16 CuT 1 4 CuT MUFFLER 1 2 CuT ACCUMULATOR 5 16 CuT COMPRESSOR HEAT EXCHANGER THERMISTOR DISCHARGE PIPE THERMISTOR GAS STOP VALVE WITH SERVICE PORT LIQUID STOP VALVE OUTDOOR AIR THERMISTOR MUFFLER WITH FILTER ELECTRONIC EXPANSION VALVE LIQUID RECEIVER FIELD PIPING 1 4 CuT FIELD PIPING 1 2 CuT FOUR WAY VALVE ON HEATING 3D...

Page 138: ...N IPM200 S403 1 10 1 2 12 1 1 5 S200 S32 S6 PNK ORG YLW BLK BLK BLK RED ORG BLU BLU WHT RED YLW t R2T M M INDOOR M1S M1F PCB2 SIGNAL RECEIVER WIRELESS REMOTE CONTROLLER PCB1 TRANSMISSION CIRCUIT FIELD WIRING NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN FG FU1 H1 H3 M1F FRAME GROUND FUSE HARNESS FAN MOTOR M1S PCB1 PCB2 R1T R2T S6 S403 ...

Page 139: ... IPM203 BLK BLK 1 BLK 1 1 1 2 12 10 1 5 1 S200 S403 S32 S6 BLK BLK YLW BLK BLK BLU ORG RED WHT BLK BLK BLK BLK t R2T M M INDOOR M1F M1S WIRING DIAGRAM NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN PCB 3 SIGNAL RECEIVER WIRELESS REMOTE CONTROLLER PCB 1 FU1 3 15A Z1C N 2 FIELD WIRING TRANSMISSION CIRCUIT PCB 2 FG HE S6 S900 FU1 L301 M1F ...

Page 140: ...RG S49 S48 M YLW M1S PNK R1T BLU 6 PCB1 S41 RED 1 t ORG M YLW S32 M2S PNK BLU R2T 5 INDOOR WIRELESS REMOTE CONTROLLER SIGNAL RECEIVER TRANSMISSION CIRCUIT WIRING DIAGRAM FIELD WIRING NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN F1U F2U H1P H2P M1F M1S M2S PCB1 PCB4 R1T R2T S1 S49 S1W S2W 4 S4W X1M E3 E4 PROTECTIVE GROUND FUSE PILOT LA...

Page 141: ... Y1S V t t t U M W MS Q1L Y1E M1F M1C WIRING DIAGRAM POWER SUPPLY FU3 20A MS 3 IN CASE OF HEAT PUMP TYPE R1T OUTDOOR R2T CONDENSER R3T DISCHARGE NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS C400 C405 DB1 FU1 FU2 FU3 FU4 FU5 IPM1 L1 L2 L1R M1C M1F MR30 MRM10 MRCW PCB1 PS CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE REACTOR COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PRINTED C...

Page 142: ...HT Y1S t t t M Q1L MS M1C Y1E M1F WIRING DIAGRAM FIELD WIRING FU3 20A FU1 3 15A MS 3 FU2 3 15A R1T OUTDOOR R3T DISCHARGE R2T CONDENSER NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER C7 DB1 FU1 FU2 FU3 FU4 FU5 IPM1 L1 L2 M1C M1F MR30 MRM10 MRM20 MRCW PAM CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PULSE AMPLITUDE MODULATION PCB PS Q1L R1T R2T R3T...

Page 143: ... WHT YLW NOTE 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS V U W t t t MS M Y1S Q1L Y1E M1C M1F FU3 30A FU1 3 15A FU2 3 15A MS 3 R3T DISCHARGE R1T OUTDOOR R2T CONDENSER IN CASE OF HEAT PUMP TYPE C7 DB1 FU1 FU2 FU3 FU4 FU5 IPM1 L1 L2 M1C M1F MRM10 MRM20 MR30 MRCW PAM PCB CAPACITOR DIODE BRIDGE FUSE INTELLIGENT POWER MODULE LIVE COMPRESSOR MOTOR FAN MOTOR MAGNETIC RELAY PULSE AMPLITUDE MODULA...

Page 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition ...

Page 145: ...horized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion z Read the user s manual carefully before using this product The user s manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any inquiries please contact your local importer ...

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