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Troubleshooting

SiBE041213E

Service Diagnosis

Troubleshooting

42 class

Caution

Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

YES

(R12188)

YES

Replace the outdoor unit
PCB.

Ground the system.

Zero-cross signal
abnormality.
Replace the outdoor unit
PCB.

Replace the harness.

Check to see if the outdoor unit is
grounded.

Is LED A blinking?

Grounded?

Replace the connecting wires
between the indoor and
outdoor units.

Check the voltage between No.1
and No.2 on the outdoor terminal
board.

Is it normal?

Is the harness

broken?

Turn on the power again.

∗

Before you check the LED A,

cancel the standby electricity
saving function by operating
fan operation with the remote
controller.

∗

Wait at least for 7 sec. after

turning on the power.

Содержание RXS35K2V1B

Страница 1: ...Service Manual Inverter Pair Wall Mounted Type K Series SiBE041213E Applied Models O Inverter Pair Heat Pump ...

Страница 2: ...all Mounted Type K Series zHeat Pump Indoor Unit FTXS35K2V1B FTXS42K2V1B FTXS50K2V1B Outdoor Unit RXS35K2V1B RXS42K2V1B RXS50K2V1B The removal procedure for each model is separately bound Refer to page 117 for the booklet number of applicable model ...

Страница 3: ...y Operation 19 1 6 Automatic Operation 20 1 7 Thermostat Control 21 1 8 NIGHT SET Mode 22 1 9 Inverter POWERFUL Operation 23 1 10 ECONO Operation 23 1 11 2 Area INTELLIGENT EYE Operation 24 1 12 Clock Setting 26 1 13 WEEKLY TIMER Operation 27 1 14 Other Functions 33 2 Function of Thermistor 34 3 Control Specification 35 3 1 Mode Hierarchy 35 3 2 Frequency Control 35 3 3 Controls at Mode Changing S...

Страница 4: ...ompressor Lock 74 4 13 DC Fan Lock 75 4 14 Input Overcurrent Detection 76 4 15 Four Way Valve Abnormality 77 4 16 Discharge Pipe Temperature Control 79 4 17 High Pressure Control in Cooling 80 4 18 Compressor System Sensor Abnormality 81 4 19 Position Sensor Abnormality 82 4 20 DC Voltage Current Sensor Abnormality 35 42 Class Only 84 4 21 Thermistor or Related Abnormality Outdoor Unit 85 4 22 Ele...

Страница 5: ...e Installed in 1 Room 107 3 2 Model Type Setting 107 3 3 Standby Electricity Saving 108 3 4 Facility Setting Jumper cooling at low outdoor temperature 108 3 5 Jumper Settings 110 4 Silicon Grease on Power Transistor Diode Bridge 111 Part 8 Appendix 112 1 Piping Diagrams 113 1 1 Indoor Unit 113 1 2 Outdoor Unit 113 2 Wiring Diagrams 115 2 1 Indoor Unit 115 2 2 Outdoor Unit 115 3 Removal Procedure B...

Страница 6: ... of Workers Warning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to disconnect the power 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 supply power to the equipment to conduct th...

Страница 7: ...22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury Warning Caution Do not repair the electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure ...

Страница 8: ...neration or fire Be sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity and improper electrical work may cause an electrical shock or fire Be sure to use the specified cable ...

Страница 9: ...nducted securely the equipment may fall and cause injury Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug has dust or loose connection it may cause an electrical shock or fire Be sure to install the product correctly by using the provided standard installation frame Incorrect use of the installation frame and improper ...

Страница 10: ...grounded Improper grounding may cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MΩ or higher Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt the unit when re...

Страница 11: ...nevertheless be valuable to the reader such as tips and tricks Caution Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning Warning A warning is used when there is danger of personal injury Reference A reference guides the reader to other places in this bi...

Страница 12: ...SiBE041213E 1 List of Functions Part 1 List of Functions 1 Functions 2 ...

Страница 13: ... Horizontal auto swing right and left z Anti corrosion treatment of outdoor heat exchanger z 3 D airflow z COMFORT AIRFLOW operation z Flexibility Multi split split type compatible indoor unit z Comfort Control Auto fan speed z Flexible power supply correspondence Indoor unit quiet operation z Chargeless 10 m NIGHT QUIET mode automatic Either side drain right or left z OUTDOOR UNIT QUIET operation...

Страница 14: ...SiBE041213E 3 Specifications Part 2 Specifications 1 Specifications 4 ...

Страница 15: ...ovable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 12 0 12 0 11 0 13 0 13 0 12 0 11 0 11 0 11 0 14 0 14 0 13 Power Consumption Rated W 26 26 26 28 28 28 24 24 24 30 30 30 Power Factor 98 5 94 2 98 5 97 9 93 6 97 2 99 2 94 9 90 9 97 4 93 2 96 2 Temperature Control Microcomputer Control Microcomputer Control Dimensions H W D mm 298 900 215 298 900 215 Packaged Dim...

Страница 16: ... Filter Removable Washable Mildew Proof Running Current A 0 12 0 12 0 11 0 15 0 14 0 14 Power Consumption W 26 26 26 32 32 32 Power Factor 98 5 94 2 98 5 97 0 99 4 95 2 Temperature Control Microcomputer Control Dimensions H W D mm 298 900 215 Packaged Dimensions H W D mm 290 977 371 Weight Mass kg 11 Gross Weight Gross Mass kg 15 Sound Pressure Level H M L SL dB A 46 40 34 23 47 40 34 24 Sound Pow...

Страница 17: ...SiBE041213E Printed Circuit Board Connector Wiring Diagram 6 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 7 2 Outdoor Unit 9 2 1 RXS35K2V1B 9 2 2 RXS42K2V1B 11 2 3 RXS50K2V1B 12 ...

Страница 18: ... 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 H1 H2 H3 FG Connector for terminal board 9 JA Address setting jumper Refer to page 107 for detail 10 JB Fan speed setting when compressor stops for thermostat OFF JC Power failure recovery function auto restart Refer to pa...

Страница 19: ...l PCB 3P210728 1 S48 1 S49 Connector for control PCB 2 SW1 Forced cooling operation ON OFF button Refer to page 104 for detail 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 temperature thermistor 3P210728 1 RTH1 SW1 S49 LED3 LED2 LED1 1 S26 Connector for control PCB 3EB86013 1 S26 ...

Страница 20: ... for magnetic relay 5 S70 Connector for fan motor 6 S80 Connector for four way valve coil 7 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 8 S100 Connector for forced operation button PCB 9 HL3 HN3 Connector for filter PCB 10 HR2 Connector for reactor 11 U V W Connector for compressor 12 FU2 Fuse 3 15 A 250 V 13 LED A LED for service monitor green 14 V1 Var...

Страница 21: ...r terminal board 3 E1 E2 Terminal for earth wire 4 HL2 HN2 Connector for main PCB 5 HR1 Connector for reactor 6 FU1 Fuse 3 15 A 250 V 7 FU3 Fuse 20 A 250 V 8 V2 V3 Varistor HR1 HL2 3P254234 1 FU1 HN2 S FU3 AC2 E1 E2 AC1 S11 V3 V2 S50 on main PCB 1 S110 Connector for main PCB 2 SW1 Forced cooling operation ON OFF switch Refer to page 104 for detail SW1 S110 3P255755 1 ...

Страница 22: ...nnector for four way valve coil 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 U V W Connector for compressor 7 HL1 HN1 S Connector for terminal board 8 E E2 Connector for earth wire 9 HR1 HR2 Connector for reactor 10 LED A LED for service monitor green 11 FU1 FU2 Fuse 3 15 A 250 V 12 FU3 Fuse 30 A 250 V 13 J4 Jumper for facility setting Refer to page 1...

Страница 23: ...4 S40 Connector for overload protector 5 S50 Connector for magnetic relay 6 S70 Connector for fan motor 7 S80 Connector for four way valve coil 8 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 9 HL3 HN3 Connector for HL2 HN2 on filter PCB 10 U V W Terminal for compressor 11 FU2 Fuse 3 15 A 250 V 12 LED A LED for service monitor green 13 V1 Varistor 14 J6 Ju...

Страница 24: ... terminal board 3 E1 E2 Terminal for earth wire 4 HL2 HN2 Connector for HL3 HN3 on main PCB 5 HL4 HN4 Connector for S12 on main PCB 6 FU1 Fuse 3 15 A 250 V 7 FU3 Fuse 30 A 250 V 8 V2 V3 Varistor 9 SW1 Forced cooling operation ON OFF switch Refer to page 104 for detail S HL1 HN1 V3 V2 FU3 SW1 FU1 HN4 HL4 HN2 HL2 S11 E2 E1 3P273862 4 S50 on main PCB ...

Страница 25: ...tion 23 1 11 2 Area INTELLIGENT EYE Operation 24 1 12 Clock Setting 26 1 13 WEEKLY TIMER Operation 27 1 14 Other Functions 33 2 Function of Thermistor 34 3 Control Specification 35 3 1 Mode Hierarchy 35 3 2 Frequency Control 35 3 3 Controls at Mode Changing Start up 37 3 4 Discharge Pipe Temperature Control 39 3 5 Input Current Control 40 3 6 Freeze up Protection Control 41 3 7 Heating Peak cut Co...

Страница 26: ...by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature Additional Control Parameters 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 i...

Страница 27: ...d 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 maximum frequency Forced Cooling Operation Refer to page 104 for detail Refrigerant circulation rate high high f low f freq variable Refrigerant circulation rate low high speed low speed R2812 Amount of hea...

Страница 28: ...irflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner When the horizontal swing and vertical swing are both set to automatic mode the airflow becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown...

Страница 29: ...is range when the FAN setting button is set to automatic Cooling The following drawing explains the principle of fan speed control for cooling The upper limit is M tap in 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 ...

Страница 30: ...temperature at start up and the target temperature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor temperature at start up Target temperature X Thermostat OFF point Y Thermostat ON point Z 24ºC or more Room thermistor temperature at start up X 2 5ºC X 0 5ºC or Y 0 5ºC zone B co...

Страница 31: ...set temperature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and operation mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr Tt 3 0 C 2 Cooling Heating switching point Tr Tt 2 5 C 3 Thermostat ON OFF point is the ...

Страница 32: ... after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry Heating Refer to Temperature Control on page 15 for detail B A OFF ON C Room thermistor temperature target temperature 1 5 C R12319...

Страница 33: ...tomatically 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 to ensure comfortable sleeping conditions and also conserves electricity Cooling Heating R18917 TIMER operation NIGHT SET Mode ON Target temperature 0 5 C temperature shift Operation stops at the set hours 0...

Страница 34: ... 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 is running Pressing the ON OFF button on the remote controller cancels the function This function and POWERFUL operation cannot be used at the same time The latest command has the priority Operation mode Fan speed Target temperature ...

Страница 35: ...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 signal continues 3 sec it judges human is in the room as the motion signal is ON 2 area INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area Image of 2 area INTELLIGENT EYE 1 sec sampling 20 msec High Low ...

Страница 36: ...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 area A right side 4 Detection signal OFF in both area A and B No change When the detection signal is OFF for 20 minutes in both area A and B the unit starts energy saving operation Others For dry operation y...

Страница 37: ...or button to set the clock to the current day of the week 3 Press the CLOCK button blinks 4 Press the SELECT or button to set the clock to the present time Holding down the SELECT or button increases 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 R18250 0 00 SELECT button C...

Страница 38: ... 27 C 25 C ON ON OFF OFF ON OFF OFF ON Program 1 Program 2 Program 3 Program 4 Example The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend 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 reservations per ...

Страница 39: ...TIMER OFF TIMER blank 5 Press 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 week and reservation number The day of the week and reservation number will be set and blink Pressing changes or setting in sequence Pressing alternates the following items appearing on the LCD in rotational s...

Страница 40: ...ure 9 Press Display 10 Press to complete the setting The time can be set between 0 00 and 23 50 in 10 minute intervals To return to the ON OFF TIMER mode setting press Go to step 9 when setting the OFF TIMER The time will be set and the temperature blink The temperature can be set between 10 C and 32 C COOL or AUTO The unit operates at 18 C even if it is set at 10 C to 17 C HEAT or AUTO The unit o...

Страница 41: ...ade once can be copied to another day of the week The whole reservation of the selected day of the week will be copied Tuesday to Friday 2 Press to confirm the day of the week to be copied 4 Press to select the destination day of the week Be sure to direct the remote controller toward the indoor unit and check for a receiving tone and flashing the OPERATION lamp The reservation will be copied to t...

Страница 42: ...EKLY TIMER operation Confirming a reservation The reservation can be confirmed Setting Displays Normal Confirmation 1 Press The day of the week and the reservation number of the current day will be displayed 3 Press to exit confirming mode To deactivate WEEKLY TIMER operation CAUTION 2 Press to select the day of the week and the reservation number to be confirmed Pressing displays the reservation ...

Страница 43: ...n rotational sequence The reservation will be no setting with selecting blank The selected reservation will be deleted If there are still other reservations WEEKLY TIMER operation will be activated This function can be used for deleting reservations for each day of the week It can be used while confirming or setting reservations Be sure to direct the remote controller toward the indoor unit and ch...

Страница 44: ...de refers to the following table Forced cooling operation Forced cooling operation can be started by pressing the ON OFF button for 5 to 9 seconds while the unit is not operating Refer to page 104 for detail Note When the ON OFF button is pressed for 10 seconds or more the forced cooling operation is stopped 1 14 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air P...

Страница 45: ...ature 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 ta...

Страница 46: ...ermined in the following order of priority 1 Limiting defrost control time 2 Forced cooling 3 Indoor frequency command 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 operation Discharging from capacitor Stop R17...

Страница 47: ...volume airflow rate and other factors PI Control Determine Frequency Up Down by D Signal 1 P control The D value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 2 I control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the D val...

Страница 48: ...ge pipe temperature C C Radiation fin temperature 90 C Control II ON condition Discharge pipe temperature D C OFF condition Discharge pipe temperature E C Radiation fin temperature 90 C 3 3 2 Four Way Valve Switching Outline In heating operation current is conducted and in cooling operation and defrost control current is not conducted In order to eliminate the switching sound as the four way valve...

Страница 49: ...ng 4 When the compressor starts after the fault of four way valve switching The lower limit of frequency keeps A Hz for B seconds with any conditions 1 through 4 above 3 3 4 3 minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off Except when defrosting 3 3 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is...

Страница 50: ...from rising further Detail 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 The upper limit of frequency is canceled 35 class 42 class 50 class A ºC 110 110 110 B ºC 105 103 103 C ºC 101 102 101 5 D ºC 99...

Страница 51: ...d 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 drops when outdoo...

Страница 52: ...he frequency upper limit to prevent abnormal high pressure Detail A C B C C C 9 5 7 5 5 5 R14718 Reset zone Indoor heat exchanger thermistor temperature Up zone Keep zone Dropping zone Stop zone 0 C C C B C A C 13 C 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 ke...

Страница 53: ...l 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 by the comm...

Страница 54: ...minutes of accumulated time pass after 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 35 class 42 class 50 class A minutes 28 30 44 B C 4 18 4 15 4 12 C Hz 76 48 55 D Hz 86 70 90 E seconds 50 60 60 F seconds 60 120 120 G seconds 480 530 340 H seconds 60 30 50...

Страница 55: ...on mode Cooling h h h h h h h h h h h h h h h h h Heating h h h h h h h h h h h h h h h h h h h Available Not available Starting control Control when the frequency changes Target discharge pipe temperature control Control for disconnection of the discharge pipe thermistor High discharge pipe temperature control Pressure equalizing control Opening limit control Starting control Control when the fre...

Страница 56: ...1 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts and prevents superheating or liquid compression 3 11 5 Control when the Frequency Changes When the target discharge pipe temperature control is active if the target frequency is changed to a specified value in a certain time period the target discharge pipe temperature control is canceled ...

Страница 57: ...peration mode is heating When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C indoor heat exchanger temperature Adjustment when the thermistor is disconnected When the disconnection is ascertained the compressor continues operation for 9 minutes and then stops If the compressor stops repeatedly the system is shut down 3...

Страница 58: ...on If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is low comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking power consumption II Detecting by discharge pipe temperature If the discharge pipe temperatu...

Страница 59: ...SiBE041213E Remote Controller 48 Part 5 Remote Controller 1 Remote Controller 49 ...

Страница 60: ...his 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 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 to block sign...

Страница 61: ...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 R18929 WEEKLY button PROGRAM button COPY button BACK button NEXT button Lamp brightness setting button OUTDOOR UNIT QUIET operation is not available in FAN and DRY operation OUTDOOR UNIT QUIET operation and POWERFUL operation cannot be used at the ...

Страница 62: ...an Lock 75 4 14 Input Overcurrent Detection 76 4 15 Four Way Valve Abnormality 77 4 16 Discharge Pipe Temperature Control 79 4 17 High Pressure Control in Cooling 80 4 18 Compressor System Sensor Abnormality 81 4 19 Position Sensor Abnormality 82 4 20 DC Voltage Current Sensor Abnormality 35 42 Class Only 84 4 21 Thermistor or Related Abnormality Outdoor Unit 85 4 22 Electrical Box Temperature Ris...

Страница 63: ...he thermistor malfunctions 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Service Monitor The indoor unit has one green LED LED A on the control PCB When the microcomputer works in order the LED A blinks 1 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the micro...

Страница 64: ...p OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB or higher and cooling operation cannot be used when the outdoor temperature is below 10 CDB Diagnose with remote controller indication 57 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 outdoor unit Check f...

Страница 65: ...on corresponding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the error codes are displayed When you cannot find the error code try the check method 2 Refer to page 55 No Code No Code No Code 1 00 13 C7 25 UA 2 U4 14 A3 26 UH 3 L5 15 H8 27 P4 4 E6 16 H9 2...

Страница 66: ...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 or button and change the number until you hear the two consecutive beeps or the long beep R11669 R11821 R11672 R11670 R11671 ...

Страница 67: ...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 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 ...

Страница 68: ...ity 62 C9 Room temperature thermistor or related abnormality 62 Outdoor Unit E1 Outdoor unit PCB abnormality 70 E5 OL activation compressor overload 72 E6 Compressor lock 74 E7 DC fan lock 75 E8 Input overcurrent detection 76 EA Four way valve abnormality 77 F3 Discharge pipe temperature control 79 F6 High pressure control in cooling 80 H0 Compressor system sensor abnormality 81 H6 Position sensor...

Страница 69: ...eck the connection of connectors See Note Correct the connection OK Check the power supply voltage Start operation Voltage as rated Error repeats Check the power supply voltage Start operation Voltage as rated Error repeats Error repeats YES NO NO YES 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 ...

Страница 70: ...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 Troubleshooting Check No 01 Refer to P 92 NO NO NO Check No 01 Check the indoor heat exchanger thermistor YE...

Страница 71: ...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 ...

Страница 72: ...upply voltage 310 340 VDC generated Is the motor control voltage 15 VDC generated Turn off the power supply and rotate the fan by hand Turn the power on and start operation Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Check No 02 Check the output of the fan motor connector R18469 NO YES YES NO YES NO Replace the indoor fan motor Replace...

Страница 73: ...sed Causes Disconnection of connector Thermistor corresponding to the error code is defective Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 92 C4 Indoor heat exchanger thermistor C9 Room temperature thermistor YES R15717 NO Check No 01 Check the thermistor resistance value YES NO Caution Correct the connection Replace the thermistor Replace the indoor unit PCB Normal Normal Chec...

Страница 74: ...econds Opening of the electronic expansion valve D Discharge pipe temperature E target discharge pipe temperature F Refrigerant shortage detection III 35 class only When the difference of the temperature is smaller than G C it is regarded as refrigerant shortage If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes ...

Страница 75: ...he pipe flare or replace the union Check the power transistor harness for loosening Correct it as required Also replace the cracked pipe Check the pipes for improper contact and correct them as required Replace the cracked pipe Replace the electronic expansion valve Replace the defective thermistor s Completed Refrigerant shortage error again Oil oozing at internal piping Stop valve closed Compres...

Страница 76: ... detection The voltage detected by the DC voltage detection circuit is below 150 180 V depending on 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 The compressor stops if the error occurs and restarts automatically after 3 minute st...

Страница 77: ...oltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Repeat a few times Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Replace the indoor unit PCB YES NO Replace both the fan motor and the outdoor unit PCB Does the outdoor fan rotate smoothly Turn on the power again System restarted Error agai...

Страница 78: ...ecked whether it is normal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Reduction of power supply voltage Wiring error Breaking of the connection wires between the indoor and outdoor units wire No 3 Defective outdoor unit PCB Short circuit inside the fan motor winding Defective indoor unit PCB Distu...

Страница 79: ... 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 by starting fan opera...

Страница 80: ...ecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting R11707 Caution NO YES YES YES NO NO Check the code numbers 2P01234 for example of the indoor and outdoor unit PCB with the Parts List Match the compatible models Change for the correct PCB Replace the indoor unit PCB or the outdoor unit PCB OK Matched compatibly Corre...

Страница 81: ...ary fall of voltage Momentary power failure Troubleshooting 35 50 class Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged NO YES YES R16910 YES NO NO Replace the outdoor unit PCB 2 Ground the system Zero cross signal abnormality Replace the outdoor unit PCB 1 Replace the harness Check to see if the outdoor unit is grounded Is LED A b...

Страница 82: ...Replace the outdoor unit PCB Replace the harness Check to see if the outdoor unit is grounded Is LED A blinking Grounded NO Replace the connecting wires between the indoor and outdoor units Check the voltage between No 1 and No 2 on the outdoor terminal board Is it normal Is the harness broken Turn on the power again Before you check the LED A cancel the standby electricity saving function by oper...

Страница 83: ...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...

Страница 84: ...place the discharge pipe thermistor Replace the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit 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 the refrigerant line Check No 12 Check the...

Страница 85: ...error Supposed Causes Compressor locked Compressor harness disconnected Troubleshooting Check No 15 Refer to P 95 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 power and reconnect the harnesses Turn on the power again and restart the system Precaution before turning on the power again Make sure th...

Страница 86: ... Disconnection of the fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 97 R15675 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate the fan Check No 16 Check the rotation pulse input on the outdoor unit PCB Turn off the power and reconnect the connector Remove the foreign matters Replace the outdoor fan motor ...

Страница 87: ...er to P 98 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 R18798 NO YES YES NO Start operation and measure the input curr...

Страница 88: ... over 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry A B 5 C Heating B A 5 C A Room thermistor temperature B Indoor heat exchanger temperature If the error repeats the 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 c...

Страница 89: ...gged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R15824 Refrigerant shortage Water mixed Stop valve Four way valve coil disconnected loose Harness out of connector Any thermistor disconnected Check No 01 Check the thermistors Check No 14 Check the refrigerant line Check No 13 Check the four way valve ...

Страница 90: ... refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 92 Check No 12 Refer to P 93 Check No 14 Refer to P 94 A C B C 1 above 45 Hz rising above 40 Hz dropping 110 97 2 30 45 Hz rising 25 40 Hz dropping 105 92 3 below 30 Hz rising below 25 Hz dropping 99 86 Frequency A C B C 1 above 35Hz rising above 30Hz dropping 110 95 2 below 35Hz rising below 30Hz d...

Страница 91: ...Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 92 Check No 12 Refer to P 93 Check No 17 Refer to P 98 Check No 18 Refer to P 98 Check No 19 Refer to P 99 R15667 Caution Replace the outdoor fan motor Reconnect the connector or fan motor lead wires Replace the stop valve Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB Replace the electronic expansion val...

Страница 92: ...voltage value 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 R11712 YES Turn off the power and turn it on again YES NO Replace the harness Replace the outdoor unit PCB Is the harness ...

Страница 93: ...tion circuit Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 35 42 class or 5 minutes 50 class without any other error Supposed Causes Power supply voltage is not as specified Start up failure caused by the closed stop valve Defective outdoor unit PCB Disconnection of the compressor relay cable Input voltage is outside the ...

Страница 94: ...e 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 Replace the compressor Correct the power supply or replace the outdoor unit PCB Reconnect the electrical components or compressor harnesses as specified Replace the outd...

Страница 95: ...sed on the compressor running frequency and the input current Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor unit PCB Troubleshooting Replace the outdoor unit PCB Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may...

Страница 96: ...n 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 Defect...

Страница 97: ...rmistor 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 Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check No 01 Check the t...

Страница 98: ...ctive outdoor unit PCB Troubleshooting Check No 17 Refer to P 98 Check No 19 Refer to P 99 A C B C C C 35 class 98 75 83 42 class 80 70 75 50 class 122 64 113 Caution WARNING To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C R14444 YES NO Slightly dirty NG Too dirty OK NO YES Turn off the power and turn it ...

Страница 99: ...sor on is above A C The error is cleared when the radiation fin temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied properly o...

Страница 100: ...heck 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 grease is applied properly on the radiation fin If not apply the silicon grease Replace the outdoor unit PCB Clean up the radiation fin Be sure to turn off the power switch before connecting or disconnecting connector...

Страница 101: ...ng A rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes 35 42 class or 5 minutes 50 class without any other error Supposed Causes Poor installation condition Closed stop valve Defective power...

Страница 102: ...ses 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 supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary fall of power supply voltage Compressor overload Short circuit Keep on using Check the connectors and other...

Страница 103: ...ed on a PCB remove the PCB from the control PCB to measure the resistance When the connector of indoor heat exchanger thermistor is soldered on the PCB remove the thermistor and measure the resistance Thermistor temperature C Resistance kΩ 20 197 8 15 148 2 10 112 1 5 85 60 0 65 93 5 51 14 10 39 99 15 31 52 20 25 02 25 20 00 30 16 10 35 13 04 40 10 62 45 8 707 50 7 176 R25 C 20 kΩ B 3950 K kΩ 150 ...

Страница 104: ...lowings to check the electronic expansion valve 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 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 tester 4 Check the continuity between the pins 1 6 2 6 3 6 4 6 If t...

Страница 105: ...l 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 Ω S80 voltage at 220 240 VAC with compressor on Fig 1 R11904 Fig 1 Voltage at S80 220 240 VAC Time Compressor ON Refrigerant system check Check for refrigerant leakage See the service diagnosis on refrigerant shortage U0 ...

Страница 106: ...rged 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 the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise i...

Страница 107: ...mpressor is defective Replace the compressor 2 If the LEDs are not lit uniformly check the power module Refer to Check No 22 3 If NG in Check No 22 replace the power module Replace the main PCB The 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 i...

Страница 108: ...Check that 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 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 If NG in step 4 Defective Hal...

Страница 109: ...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 temperature The outdoor temperature should be within the operation range R15738 Not dirty YES YES Dirty NO NO NO YES Is the air filter or indoor outdoor heat exchanger dirty Is the connection pipe deformed Is...

Страница 110: ...nce is or less than 1 kΩ short circuit occurs on the main circuit 35 class R15001 YES YES NO NO Outdoor fan system is functioning Check the outdoor fan system Go to Check No 16 Outdoor fan running Fan motor lead wire connector disconnected Reconnect the connector Negative terminal of tester positive terminal for digital tester 2 3 4 2 3 1 Positive terminal of tester negative terminal for digital t...

Страница 111: ...SiBE041213E Check Service Diagnosis 100 42 class 50 class R12266 Tester 1 2 3 4 Tester 1 2 3 4 R14700 ...

Страница 112: ...nector Follow 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 referring to the following table 35 class Negative terminal of tester positive terminal for digital tester Power module UVW Power module UVW Positive terminal of tester negative terminal for digital tester UVW Pow...

Страница 113: ...SiBE041213E Check Service Diagnosis 102 42 class 50 class R18241 Power module Power module R16692 ...

Страница 114: ...rced Cooling Operation 104 2 Trial Operation 106 3 Field Settings 107 3 1 When 2 Units are Installed in 1 Room 107 3 2 Model Type Setting 107 3 3 Standby Electricity Saving 108 3 4 Facility Setting Jumper cooling at low outdoor temperature 108 3 5 Jumper Settings 110 4 Silicon Grease on Power Transistor Diode Bridge 111 ...

Страница 115: ... are met 1 The outdoor unit is not abnormal and not in the 3 minute standby mode 2 The outdoor unit is not operating Start The forced cooling operation starts when any of the following conditions is fulfilled 1 Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds 2 Press the forced cooling operation ON OFF switch SW1 on the outdoor unit with standby electricity sav...

Страница 116: ...e terminal board It has a high voltage and may cause electric shock Note 42 class models have no forced cooling operation ON OFF button on the outdoor unit PCB Carry out forced cooling operation from indoor unit ON OFF button SW1 R18928 1 2 3 Push here Screwdriver R18256 Terminal board 1 2 3 Screwdriver R18725 Forced cooling operation ON OFF switch SW1 Push ...

Страница 117: ... that all functions and parts such as flap movement are working properly Note The air conditioner requires a small amount of power in standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to shut off the power to the air conditioner the system backs up the operation mode The...

Страница 118: ... box 4 Cut the address setting jumper JA on the 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 Wireless Remote Controller Cut the address setting jumper 3 2 Model Type Setting This remote controller is common to the heat pump model and cooling only model The heating operation will n...

Страница 119: ...class Caution Before connecting or disconnecting the selective connector for standby electricity saving make sure that the main power supply is turned OFF 3 4 Facility Setting Jumper cooling at low outdoor temperature Outline This function is limited only for facilities the target of air conditioning is equipment such as computer Never use it in a residence or office the space where there is a hum...

Страница 120: ...s 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 cause dew condensation from the indoor unit outlet vent 4 Cutting the jumper sets ...

Страница 121: ...r connected factory set Jumper cut Fan speed setting when compressor stops for thermostat OFF effective only in cooling operation JB Fan speed setting Remote controller setting Fan speed setting 0 The fan stops Power failure recovery function JC Auto restart The unit does not resume operation after recovering from a power failure Timer settings are cleared Function Jumper Jumper connected factory ...

Страница 122: ...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 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 silicon grease is not appropriately applied OK Even...

Страница 123: ...SiBE041213E Appendix 112 Part 8 Appendix 1 Piping Diagrams 113 1 1 Indoor Unit 113 1 2 Outdoor Unit 113 2 Wiring Diagrams 115 2 1 Indoor Unit 115 2 2 Outdoor Unit 115 3 Removal Procedure Booklet No 117 ...

Страница 124: ...NG FIELD PIPING 6 4CuT FIELD PIPING 12 7CuT THERMISTOR ON HEAT EXCH 4D058898G OUTDOOR UNIT HEAT EXCHANGER 7 0CuT 7 0CuT 9 5CuT EV 4 8CuT 6 4CuT 6 4CuT 4 8CuT M PROPELLER FAN 9 5CuT 9 5CuT 6 4CuT 7 9CuT 9 5CuT MUFFLER 9 5CuT 9 5CuT COMPRESSOR MUFFLER MUFFLER 7 9CuT ACCUMULATOR REFRIGERANT FLOW COOLING HEATING OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER THERMISTOR DISCHARGE PIPE THERMISTOR GAS STO...

Страница 125: ...RGE PIPE THERMISTOR FOUR WAY VALVE ON HEATING 3D059590D OUTDOOR UNIT HEAT EXCHANGER 7 9CuT 7 9CuT 7 9CuT 7 9CuT 7 9CuT 12 7CuT CAPILLARY TUBE 1 CAPILLARY TUBE 2 CAPILLARY TUBE 3 CAPILLARY TUBE 4 7 9CuT 4 0CuT 7 9CuT 4 0CuT 7 9CuT 7 9CuT REFRIGERANT FLOW 6 4CuT COOLING 7 9CuT 4 0CuT HEATING 6 4CuT 4 0CuT 6 4CuT M PROPELLER FAN EV FILTER 12 7CuT 6 4CuT 9 5CuT 12 7CuT RECEIVER 7 9CuT 12 7CuT MUFFLER ...

Страница 126: ...T IPM1 FU3 Z3C X1M DB1 L1R HR1 20A HR2 AC1 L1 BRN L 1 BLK 1 MRM10 AC2 HN3 V2 WHT 2 N 2 DB2 HN2 C5 HA1 HA2 S BLU GRY 3 RED 3 HL3 C119 HL2 V3 ORG C6 FU1 L Q1 MR30 3 15A 1 WHT 1 V1 BLK N PCB2 DB3 BLK FU2 GRN YLW BLK 3 15A SA1 S11 S10 BLK BLK E1 W V U BLK IPM2 BLK 9 9 BLK MR30_B E2 MRCW GRN BLU RED YLW S70 S100 S50 Z2C S90 S20 S40 PCB1 X11A S80 1 3 3 1 1 2 11 1 10 12 7 13 4 1 6 1 1 6 2 N 2 GRN OUTDOOR...

Страница 127: ...ERMISTOR SURGE ARRESTER IGBT V1 V3 V4 X1M Y1E Y1R Z1C Z2C Z3C Z4C S20 S40 S70 S80 S90 X11A BLK BLACK BLU BLUE BRN BROWN GRN GREEN ORG ORANGE RED RED WHT WHITE YLW YELLOW VARISTOR TERMINAL STRIP ELECTRONIC EXPANSION VALVE COIL REVERSING SOLENOID VALVE COIL FERRITE CORE PROTECTIVE EARTH CONNECTOR 3D059601B indoor TO INDOOR UNIT FIELD WIRING POWER SUPPLY outdoor NOTE CAPACITOR DIODE BRIDGE FUSE FIELD...

Страница 128: ...iBE041213E 117 Appendix 3 Removal Procedure Booklet No Refer to the following booklets for removal procedure FTXS35 42 50K2V1B Refer to Si041259 RXS35K2V1B Refer to Si001273 RXS42K2V1B Refer to Si001277 RXS50K2V1B Refer to Si001274 ...

Страница 129: ...Revision History Month Year Version Revised contents 05 2013 SiBE041213E First edition ...

Страница 130: ...ories 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 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 instruct...

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