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DAMA-SM-21-003

Thermistor Functions

Functions and Control

31

2. Thermistor Functions

(1) Discharge
Pipe Thermistor



The discharge pipe thermistor is used for controlling discharge pipe temperature. If the
discharge pipe temperature (used in place of the inner temperature of the compressor) rises
abnormally, the operating frequency becomes lower or the operation halts.



The discharge pipe thermistor is used for detecting disconnection of the discharge pipe
thermistor.

(2) Outdoor Heat
Exchanger
Thermistor



The outdoor heat exchanger thermistor is used for controlling the target discharge pipe
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve
opening so that the target discharge pipe temperature can be obtained.



In cooling operation, the outdoor heat exchanger thermistor is used for detecting the
disconnection of the discharge pipe thermistor. When the discharge pipe temperature drops
below the outdoor heat exchanger temperature by more than a certain value, the discharge
pipe thermistor is judged as disconnected.



In cooling operation, the outdoor heat exchanger thermistor is used for high pressure
protection.

(3) Outdoor
Temperature
Thermistor



The outdoor temperature thermistor detects the outdoor air temperature and is used for
refrigerant shortage detection, input current control, outdoor fan control, liquid compression
protection function, and so on.

(4) Indoor Heat
Exchanger
Thermistor



The indoor heat exchanger thermistor is used for controlling the target discharge pipe
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve
opening so that the target discharge pipe temperature can be obtained.



In cooling operation, the indoor heat exchanger thermistor is used for freeze-up protection
control. If the indoor heat exchanger temperature drops abnormally, the operating frequency
becomes lower or the operation halts.



During heating, the indoor heat exchanger thermistor is used for detecting disconnection of
the discharge pipe thermistor.

When the discharge pipe temperature becomes lower than the indoor heat exchanger
temperature, the discharge pipe thermistor is judged as disconnected.

The indoor heat exchanger thermistor is also used for preventing abnormal high pressure.

(5) Room
Temperature
Thermistor



The room temperature thermistor detects the room air temperature and is used for
controlling the room air temperature.

(A)CTX series only

Compressor

Four way valve

Expansion valve

EV

A

EV

B

B

A

(3) Outdoor
Temperature
Thermistor

(1) Discharge Pipe
Thermistor

(4) Gas Pipe
Thermistor

(5) Liquid Pipe
Thermistor

(6) Indoor Heat
Exchanger
Thermistor

(7) Room
  Temperature
  Thermistor

(2) Outdoor Heat
Exchanger
Thermistor

DAMA-SM-21-003 -Inverter Multi Split-CTX Series.book Page 31 Wednesday, September 1, 2021 5:44 PM

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Содержание CTX Series

Страница 1: ...ice Manual DAMA SM 21 003 Service Manual Inverter Multi Split Wall Mounted Type CTX X Series DAMA SM 21 003 Inverter Multi Split Wall Mounted Type CTX X Series Applied Models z Inverter Split Heat Pump Unit ...

Страница 2: ......

Страница 3: ...r Unit 24 1 5 Dry Mode 25 1 6 Automatic Operation 26 1 7 Thermostat Control 27 1 8 ECO Operation 28 1 9 Sleep Mode 29 1 10 POWERFUL Operation 29 1 11 Other Functions 30 2 Thermistor Functions 31 3 Control Specification 32 3 1 Mode Hierarchy 32 3 2 Frequency Control 33 3 3 Controls at Mode Changing Start up 35 3 4 Discharge Pipe Temperature Control 36 3 5 Input Current Control 37 3 6 Freeze up Prot...

Страница 4: ...ation Compressor Overload 66 4 12 Compressor Lock 68 4 13 DC Fan Lock 69 4 14 Input Overcurrent Detection 70 4 15 Discharge Pipe Temperature Control 71 4 16 High Pressure Control in Cooling 72 4 17 Compressor System Sensor Abnormality 74 4 18 Position Sensor Abnormality 75 4 19 Thermistor or Related Abnormality Outdoor Unit 76 4 20 Electrical Box Temperature Rise 78 4 21 Radiation Fin Temperature ...

Страница 5: ...ode Bridge 95 Part 7 Appendix 96 1 Piping Diagrams 97 1 1 Indoor Unit 97 1 2 Outdoor Unit 97 2 Wiring Diagrams 98 2 1 Indoor Unit 98 2 2 Outdoor Unit 98 2 3 Printed Circuit Board Connector Wiring Diagram 99 2 4 Printed Circuit Board Connector Wiring Diagram 100 3 Operation Limit 102 DAMA SM 21 003 Inverter Multi Split CTX Series book Page iii Wednesday September 1 2021 5 44 PM ...

Страница 6: ... 1 Warnings and Cautions Regarding Safety of Workers 2 1 2 Warnings and Cautions Regarding Safety of Users 8 2 Icons Used 10 3 Revision History 11 Introduction DAMA SM 21 003 Inverter Multi Split CTX Series book Page 1 Wednesday September 1 2021 5 44 PM ...

Страница 7: ...n This appliance is filled with R410A 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 re...

Страница 8: ... equipment damage and injury 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 with water Washing the unit with water may cause an electrical shock Be sure to provide an earth grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off th...

Страница 9: ...uld be kept at a safe distance from the site of installation repairing or removing space Before starting work the area around the equipment shall be examined to make sure that there are no flammable hazard or ignition risks No Smoking signs shall be displayed Ventilated area Ensure that the working area is open or that it is adequately ventilated before work Adequate ventilation shall be maintaine...

Страница 10: ... seals incorrect fitting of glands etc Ensure that the equipment is mounted securely Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingression of flammable atmospheres Replacement parts shall be in accordance with the manufacturer s specifications The use of silicon sealant may inhibit the effectiveness of some types of leak de...

Страница 11: ...nert gas Purge again with inert gas Carry out cutting or brazing of the circuit The refrigerant shall be recovered into the correct recovery cylinders The system shall be cleaned with OFN to render the unit safe Flushing This process may need to be repeated several times Compressed air or oxygen shall not be used for this task Flushing shall be achieved through breaking the vacuum by filling the s...

Страница 12: ... the equipment contains R410A Refrigerant recovery When removing refrigerant from a system either for servicing or decommissioning it is recommended to conduct training so that all refrigerants can be removed safely When transferring refrigerant into cylinders ensure that only appropriate refrigerant recovery cylinders are used Ensure that the correct number of cylinders for holding the total syst...

Страница 13: ...connections may cause excessive heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cables may ...

Страница 14: ...nted and connected properly and if connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat 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 equip...

Страница 15: ...ader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Reference Reference Reference guides the reader to other places in this binder or in this manual where he she will find additional infor...

Страница 16: ...1 003 Revision History Introduction 11 3 Revision History Month Year Version Revised contents 09 2021 DAMA SM 21 003 DAMA SM 21 003 Inverter Multi Split CTX Series book Page 11 Wednesday September 1 2021 5 44 PM ...

Страница 17: ...DAMA SM 21 003 12 Part 1 General Information 1 Applicable Models 13 Part 1 General Information DAMA SM 21 003 Inverter Multi Split CTX Series book Page 12 Wednesday September 1 2021 5 44 PM ...

Страница 18: ...on 13 1 Applicable Models Model Name and Power Supply Indoor Unit Outdoor Unit Power Supply CTX07AXVJU 1Phase 208 230V 60Hz CTX09AXVJU 2MX18AXVJU CTX12AXVJU DAMA SM 21 003 Inverter Multi Split CTX Series book Page 13 Wednesday September 1 2021 5 44 PM ...

Страница 19: ...atpump Capacity Indication 07 7 000 Btu h Major Design Category A A Series Factory Origin X Malaysia Power Supply VJ 1Phase 60Hz 208 230V Country U United States Definition Description Indoor Quantity 2 2 Ports System Unit Category M Multi System System X Inverter Heatpump Capacity Indication 18 18 000 Btu h Major Design Category A A Series Factory Origin X Malaysia Power Supply VJ 1Phase 60Hz 208...

Страница 20: ...DAMA SM 21 003 Part 2 Specifications 15 1 Specification Data 16 2 Functions 20 Part 2 Specifications DAMA SM 21 003 Inverter Multi Split CTX Series book Page 15 Wednesday September 1 2021 5 44 PM ...

Страница 21: ... Cooling Heating Rated capacity 7 kBtu h Class Front Panel Colour White Airflow Rate Turbo CFM 350 350 High CFM 310 310 Medium CFM 280 280 Low CFM 249 249 Quiet CFM 142 195 Sound Pressure Level H M L Q dBA 37 33 30 19 36 32 29 24 Fan Type CROSS FLOW Drive DIRECT Speed 3 STEPS AUTO QUIET TURBO Fan Motor Type DIRECT CURRENT Motor Output W 53 Running Current Rated A 0 17 Power Consumption Rated W 38 ...

Страница 22: ...x 830 x 314 Weight lbs kg 20 9 Gross Weight lbs kg 25 11 Condensate Drain Size inch mm 3 4 19 05 Drawing No 3D132851 Document No Set 3D132856 Model CTX12AXVJU Cooling Heating Rated capacity 12 kBtu h Class Front Panel Colour White Airflow Rate Turbo CFM 470 470 High CFM 430 430 Medium CFM 340 340 Low CFM 249 249 Quiet CFM 142 195 Sound Pressure Level H M L Q dBA 46 39 30 19 45 38 29 24 Fan Type CR...

Страница 23: ...pe HERMETIC SWING Model 2YC36HXD Oil type DAPHNE FVC50K Oil amount oz cm3 22 650 Heat Exchanger Type FIN TUBE Starting Current A 9 50 Dimensions H x W x D inch mm 21 11 16 x 26 1 2 x 11 3 16 550 x 675 x 284 Packaged Dimensions H X W X D inch mm 24 1 64 x 31 3 8 x 15 1 8 610 x 801 x 384 Weight lbs kg 77 35 Gross Weight lbs kg 84 38 Piping Connections Liquid inch mm 1 4 6 35 Gas inch mm 3 8 9 52 Ref...

Страница 24: ...7 560 300 900 2 6 1 4 4 2 93 09 850 300 900 4 0 1 4 4 2 93 12 1240 300 1300 5 8 1 4 6 0 93 07 07 1260 600 1500 5 9 2 8 7 0 93 07 09 1660 600 1700 7 8 2 8 7 9 93 07 12 1700 600 1820 7 9 2 8 8 5 93 09 09 1700 600 1820 7 9 2 8 8 5 93 09 12 1700 600 1820 7 9 2 8 8 5 93 12 12 1700 600 1820 7 9 2 8 8 5 93 Combination of Indoor Type of Indoor Capacity of each indoor unit Each Capacity kBtu h Total Capaci...

Страница 25: ...Non Inverter Inverter Powerful Operation Energy Saving Function Sleep Mode Indoor Unit ON OFF Button R C with Backlight Signal Receiving Sign R C Set Temperature Display R C Health Clean Saranet Filter Catechin Filter Green Tea Filter Titanium Apatite Air Purifying Filter PM 2 5 Filter Streamer Plasma Wipe Clean Flat Panel Timer Weekly Timer Operation Wired R C 24 hour ON OFF Timer R C Countdown O...

Страница 26: ...tor Functions 31 3 Control Specification 32 3 1 Mode Hierarchy 32 3 2 Frequency Control 33 3 3 Controls at Mode Changing Start up 35 3 4 Discharge Pipe Temperature Control 36 3 5 Input Current Control 37 3 6 Freeze up Protection Control 38 3 7 Heating Peak cut Control 39 3 8 Outdoor Fan Control 40 3 9 Liquid Compression Protection Function 41 3 10 Defrost Control 41 3 11 Electronic Expansion Valve...

Страница 27: ...meters 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 inverter makes it possible to control th...

Страница 28: ...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 Discharge pipe temperature control Refer to page 36 Input current control Refer to page 37 Freeze up protection control Refer to page 38 Forced Cooling Operation Refer to page 94 for details Refrigerant circulation rate high h...

Страница 29: ...eed control contains 5 steps SL L M H SH The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the set temperature In heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set temperature Automatic Fan Speed Control In ...

Страница 30: ...he room thermister temperature and the set temperature is divided into zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Zone B continues to stay for 120 seconds before the unit will turn to thermostat ON Room thermistor temperature set temperature Fan speed 1 5 C 2 7 F 0 5 C 0 9 F 2 C 3 6 F 1 5 C 2 7 F H L Room th...

Страница 31: ... Room temperature Main unit setting temperature 2 5 deg 4 5 F b Cooling Heating switching point Room temperature Main unit setting temperature 2 5 deg 4 5 F c Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 During initial operation Room temperature Remote controller setting temperature Cooling operation Room temperature Remote controller setting temperatur...

Страница 32: ...C after being in the zone 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 Heating 2 minutes Cooling Dry Heating Zone B Zone B Zone A Zone A OFF OFF ON ON Zone C Zone C 1 0 C 1 8 F Cooling 0 5 C 0 9 F Dry 0 5 C 0 9 F Cooling Dry 1 5 C 2 7 F Room thermistor temperature set temperature OFF OFF ON ON 0 5 C 0 9 ...

Страница 33: ...button on the wireless remote controller Details Cool mode User set temperature 24 C 75 F User set temperature 24 C 75 F Heat mode User set temperature 20 C 68 F User set temperature 20 C 68 F 24 75 Unit runs at 24 C 75 F ECO activated User set temp Unit runs at user set temperature 1 C 1 8 F User set temp 1 C 1 8 F ECO activated 24 75 User set temp Unit runs at 20 C 68 F ECO activated User set te...

Страница 34: ... fan rotating speed and the compressor frequency Details When POWERFUL button is pressed the fan speed and target temperature are converted to the following states for 20 minutes H high fan A refer table below POWERFUL operation cannot be used together with ECO operation target temperature COOL or DRY run sleep operation target temperature HEAT 1hr 1hr shift 0 5 C 0 9 F no offset on target tempera...

Страница 35: ...ressed for 10 seconds or more 1 11 3 Auto restart Function If a power failure even a momentary one occurs during the operation the operation restarts automatically in the same conditions as before when the power supply is restored to the conditions prior to the power failure It takes 3 minutes to restart the operation because 3 minute standby function is activated 1 11 4 Hot start function In orde...

Страница 36: ...ge detection input current control outdoor fan control liquid compression protection function and so on 4 Indoor Heat Exchanger Thermistor The indoor heat exchanger thermistor is used for controlling the target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve o...

Страница 37: ...There are following modes Cooling includes drying Heating includes defrosting Stop Unless specified otherwise dry operation command is regarded as cooling operation Heating Defrosting Stop mode except for cooling heating modes by indoor command Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Discharging from capacitor Stop DAM...

Страница 38: ...g function Input current discharge pipes peak cutting freeze up protection dew prevention fin thermistor temperature 1 2 Limiting defrost control time 1 3 Forced cooling 1 4 Indoor frequency command 2 Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes peak cu...

Страница 39: ...pping Frequency control is carried out only when the frequency drops For controlling 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 set according to the command of the indoor unit When the indoor unit quiet operation command comes from the indoor unit the upper limit frequency is...

Страница 40: ...eration is stopped 3 3 3 Four Way Valve Operation Compensation Outline Heat Pump Only At the beginning of the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output the operating frequency which is more than a certain fixed frequency for a certain fixed time Details Starting Conditions 1 When starting compressor for...

Страница 41: ...her Details 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 cancelled 18 A C 116 0 B C 107 0 C C 105 0 D C 103 0 18 A F 240 8 B F 224 6 C F 221 0 D F 217 4 Stop zone D C F...

Страница 42: ... the model Zone Control Stop zone After the input current remains in the stop zone for 2 5 seconds the compressor is stopped Dropping 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 can...

Страница 43: ...ontrol in each zone Zone Control Reset zone The upper limit of frequency is cancelled Up zone The upper limit of frequency increases Keep zone The upper limit of frequency is kept Dropping zone The upper limit of frequency decreases Stop zone When indoor coil temperature 0 C for 80s compressor is stopped A C B C C C All outdoor units 7 0 5 0 3 0 A F B F C F All outdoor units 44 6 41 0 37 4 Indoor ...

Страница 44: ...change intermediate temperature of indoor unit controls the following Frequency control in each zone Zone Control Stop zone When indoor coil temperature 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 cancelled 18 A C 62 5 B C ...

Страница 45: ...he outdoor fan is reduced When the pressure difference is high the rotation speed of the outdoor fan is controlled as well as normal operation 4 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 5 Fan speed control during indoor unit quiet operation The rotation speed of the outdoor fan is reduced by the comm...

Страница 46: ... value when finishing Details Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature Under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 45 minutes of accumulated time pass since the start of the operation or ending the defrosting Conditions for Canceling D...

Страница 47: ...U 21 3RZHU 6XSSO 5HVHW QLWLDOL HG IXOO FORVHG DV 3RZHU 6XSSO 21 OHFWURQLF H SDQVLRQ YDOYH FRQWURO DW VWDUW XS 7DUJHW GLVFKDUJH SLSH WHPSHUDWXUH FRQWURO HHGEDFN FRQWURO LJK GLVFKDUJH SLSH WHPSHUDWXUH FRQWURO HIURVW FRQWURO 5HKHDW GHKXPLGLrFDWLRQ FRQWURO LJK GLVFKDUJH SLSH WHPSHUDWXUH FRQWURO GRHV QRW IXQFWLRQ ZKHQ WKH GLVFKDUJH SLSH WKHUPLVWRU LV GLVFRQQHFWHG 3URFHVVHV ZKLOH WKH FRPSUHVVRU LV RSHUD...

Страница 48: ... Fully closed open 250 pulses 3 11 4 Initialization as Power Supply On The electronic expansion valve is initialized fully closed when the power is turned on Then the valve opening position is set and the pressure is equalized 3 11 5 Pressure Equalizing Control When the compressor is stopped the pressure equalizing control is activated The electronic expansion valve opens and the pressure is equal...

Страница 49: ... time and then stops After 3 minutes the operation restarts and checks if the discharge pipe thermistor is disconnected If the discharge pipe thermistor is disconnected the system stops after operating for a specified time If the disconnection is detected repeatedly the system is shut down When the compressor runs for 60 minutes without any error the error counter is reset Details Determining ther...

Страница 50: ...scharge 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 following Target discharge pipe temperature Actual discharge pipe te...

Страница 51: ...r 3 12 2 Detection of Overcurrent and Overload Outline In order to protect the inverter an excessive output current is detected in wire labelled as No 1 at outdoor terminal block and the OL temperature is observed to protect the compressor Details If the inverter current exceeds A A the system shuts down the compressor If the OL compressor head temperature exceeds B C F the compressor stops 18 A 1...

Страница 52: ...AMA SM 21 003 Remote Controller 47 1 Applicable Remote Controller 48 2 BRC52B63 49 Part 4 Remote Controller DAMA SM 21 003 Inverter Multi Split CTX Series book Page 47 Wednesday September 1 2021 5 44 PM ...

Страница 53: ...r DAMA SM 21 003 48 Remote Controller 1 Applicable Remote Controller Series Model Name Remote Controller CTX CTX07 09 12AXVJU BRC52B63 DAMA SM 21 003 Inverter Multi Split CTX Series book Page 48 Wednesday September 1 2021 5 44 PM ...

Страница 54: ...ating modes ON Timer Button Enable Disable and change ON Timer setting CLOCK Button Changes RTC selling SLEEP Button Enable Disable SLEEP function UP DOWN SWING Button Direct the air flow in up down direction POWERFUL Button Enable Disable POWERFUL function ECO Button Enable Disable ECO function OFF Timer Button Enable Disable and change OFF Timer setting Temperature Setting Button Increase Decrea...

Страница 55: ...an Lock 69 4 14 Input Overcurrent Detection 70 4 15 Discharge Pipe Temperature Control 71 4 16 High Pressure Control in Cooling 72 4 17 Compressor System Sensor Abnormality 74 4 18 Position Sensor Abnormality 75 4 19 Thermistor or Related Abnormality Outdoor Unit 76 4 20 Electrical Box Temperature Rise 78 4 21 Radiation Fin Temperature Rise 79 4 22 Output Overcurrent Detection 80 4 23 Four Way Val...

Страница 56: ...re Cooling operation is not available when the outdoor temperature is out of the operation limit Check the reference page for the operation limit 102 Diagnose with remote controller indication 54 The unit operates but does not cool Check for wiring and piping errors in the connection between the indoor and outdoor units Check for thermistor detection errors Check if the thermistor is mounted secur...

Страница 57: ...een the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages 2 2 Outdoor Unit The outdoor unit has a green LED LED A on the PCB When the microcomputer works in order the LED A blinks Refer to pages 100 101 for the location of LED A ON OFF switch LED INDICATION LIGHTS FU3 FU1 FU2 V4 FU1 FU2 E E2 S HL1 HN1 S V3 V5 X12A LEDA X11A S90 S70 TH1 S90 S9...

Страница 58: ...hort beep and two consecutive beeps indicate non corresponding codes 2 To return to the normal mode GV Press Timer CANCEL for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode TIMER CANCEL OFF C GV CTX DAMA SM 21 003 Inverter Multi Split CTX Series book Page 53 Wednesday September 1 2021 5 44 PM ...

Страница 59: ...mistor or related abnormality 60 Outdoor Unit E1 Outdoor unit PCB abnormality 65 E5 OL activation compressor overload 66 E6 Compressor lock 68 E7 DC fan lock 69 E8 Input overcurrent detection 70 F3 Discharge pipe temperature control 71 F6 High pressure control in cooling 72 EA Four way valve abnormality 82 H0 Compressor sensor system abnormality 74 H6 Position sensor abnormality 75 H9 Outdoor temp...

Страница 60: ...utdoor air thermistor short open J1 Pressure sensor error J3 Compressor discharge pipe thermistor short open misplaced J5 Suction pipe thermistor short open J6 Outdoor heat exchanger thermistor short open J7 Subcooling heat exchanger thermistor short open J8 Liquid pipe thermistor short open J9 Gas pipe thermistor short open L1 Inverter outdoor PCB error L3 Outdoor control box overheat L4 Heat sin...

Страница 61: ...upply Is error repeat Completed Completed Remove the casing Press the ON OFF switch again Is the ON OFF switch can be pressed Turn off the power supply replace the indoor unit PCB Display PCB Turn on the power supply Turn on the power supply Is error repeat Is error repeat Replace the indoor unit PCB Control PCB Replace the indoor unit PCB Control PCB Yes Yes Yes No No No Completed No Replace the ...

Страница 62: ...auses Indoor 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 85 When replacing the defective thermistor s replace the thermistor as ASSY NO NO NO Check No 01 Check the indoor heat exchanger thermistor YES YES YES YES NO Provide suffici...

Страница 63: ...0 of the maximum fan motor rotation speed Supposed Causes Indoor fan motor winding short or the motor lead wire broken Indoor PCB faulty Troubleshooting Does it rotate Change fan motor Check fan motor connector condition Connect correctly No Yes Yes Change Fan motor Complete No No Yes Replace the indoor unit PCB control PCB and turn on power Is error repeated Does it connect properly Turn off powe...

Страница 64: ...ective thermistor s Defective indoor unit PCB Troubleshooting C4 Indoor heat exchanger thermistor Check No 01 Refer to P 85 When replacing the defective thermistor s replace the thermistor as ASSY YES NO Check No 01 Check the thermistor resistance value YES NO Correct the connection Replace the defective thermistor Replace the indoor unit PCB control PCB Normal Normal Check the connection of conne...

Страница 65: ...fective thermistor s Defective indoor unit PCB Troubleshooting C9 Room temperature thermistor Check No 01 Refer to P 85 When replacing the defective thermistor s replace the thermistor as ASSY YES NO Check No 01 Check the thermistor resistance value YES NO Correct the connection Replace the defective thermistor Replace the indoor unit PCB control PCB Normal Normal Check the connection of connector...

Страница 66: ...ge detection circuit Defective over voltage detection circuit Defective PAM control part Disconnection of compressor harness Short circuit inside the fan motor winding Noise Momentary drop of voltage Momentary power failure Defective outdoor unit PCB Correct the power supply Check for such factors for a long term NO NO YES YES NO YES YES Reconnect the harness Check the power supply voltage Check t...

Страница 67: ...outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage out of specification Reduction of power supply voltage Wiring miss connection Breaking of the connection wires between the indoor and outdoor units wire no 3 SIG Defective outdoor unit PCB Short circuit inside the fan motor winding Defective indoor unit PCB Disturbed power supply wa...

Страница 68: ... main PCB Replace the connection wires between the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there any wiring error Check the connection wires between the indoor unit and the outdoor unit Check the LED A on the outdoor unit PCB NO YES Check the power supply voltage Correct the power supply YES NO Replace the outdoor fan motor and the outdoor unit...

Страница 69: ...ndoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Troubleshooting NO YES YES NO Match the compatible models OK Correct the connection Are the connecting wires connected properly Check the combination of the indoor and outdoor unit Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution Check th...

Страница 70: ...upposed Causes Defective outdoor unit PCB Noise Momentary drop of voltage Momentary power failure Troubleshooting YES NO NO YES Replace the outdoor unit PCB main PCB Ground the system The cause can be external factors other than malfunction Investigate the cause of noise Turn on the power Error again Check if the outdoor unit is grounded Grounded Be sure to turn off the power switch before connect...

Страница 71: ...tinuous 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 shortage Water mixed in re...

Страница 72: ...the resistance between the 2 terminals on connector S40 Check the electronic expansion valve Check the refrigerant line Check the four way valve Disconnect the 2 terminals of the OL Q1L Check the resistance between the 2 terminals of the OL Q1L Refrigerant shortage Water mixed Stop valve Insert the thermistor in position Replace the discharge pipe thermistor Connect the connectors properly Replace...

Страница 73: ...locked Disconnection of compressor harness Troubleshooting Check No 12 Refer to P 86 Stop valve closed YES NO YES NO YES NO Open the stop valve System shut down after errors repeated several times Emergency stop without compressor running Turn off and turn on the power to restart the system Check the electronic expansion valve coil Go to Check No 12 Replace the compressor outdoor unit PCB main PCB...

Страница 74: ... in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 88 YES YES NO YES NO NO YES NO Turn on the power Rotate the fan Turn off the power and reconnect the connector Remove the foreign matters Replace the outdoor fan motor Replace the outdoor unit PCB main PCB Replace the outdoor fan motor Fan motor connector disconnected Foreign matters in or around the ...

Страница 75: ...circuit Troubleshooting Cautions 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 displacement check the wiring again Check No 17 Refer to P 89 Check No 18 Refer to P...

Страница 76: ...nt shortage Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01 Refer to P 85 Check No 12 Refer to P 86 Check No 14 Refer to P 88 When replacing the defective thermistor s replace the thermistor as ASSY A C B C A F B F 07 09 12 116 0 103 0 07 09 12 240 8 217 4 NG OK OK OK NG NG Discharge pipe thermistor Outdoor heat exchanger thermistor Outdoor te...

Страница 77: ...oubleshooting A C B C A F B F 07 09 12 62 5 51 0 07 09 12 144 5 123 8 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 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 ...

Страница 78: ... Note Check No 01 Refer to P 85 Check No 12 Refer to P 86 Check No 17 Refer to P 89 Check No 18 Refer to P 89 Check No 19 Refer to P 90 When replacing the defective thermistor s replace the thermistor as ASSY DAMA SM 21 003 Inverter Multi Split CTX Series book Page 73 Wednesday September 1 2021 5 44 PM ...

Страница 79: ... Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting NO 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 relay harness for the compressor Not a malfunction Keep observing Be sure to turn off the power s...

Страница 80: ...ve outdoor unit PCB Start up failure caused by the closed stop valve Input voltage out of specified range Troubleshooting Check No 18 Refer to P 89 Check No 20 Refer to P 90 Voltage as rated OK Normal Correct the power supply Replace the stop valve Replace the outdoor unit PCB main PCB Replace the outdoor unit PCB main PCB compressor Reconnect the electrical components or compressor harnesses as s...

Страница 81: ...amaged Replace the outdoor unit PCB main PCB Troubleshooting In case of H9 J3 J6 and P4 Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged H9 Outdoor temperature thermistor Caution Caution Error displayed again on remote controller Indoor heat exchanger thermistor functioning Check the indoor heat exchanger thermistor resistance value in the ...

Страница 82: ...g Service Diagnosis 77 Reference Note Check No 01 Refer to P 85 When replacing the defective thermistor s replace the thermistor as ASSY DAMA SM 21 003 Inverter Multi Split CTX Series book Page 77 Wednesday September 1 2021 5 44 PM ...

Страница 83: ... Refer to P 89 Check No 19 Refer to P 90 A C B C C C A F B F C F 07 09 12 90 0 75 0 81 0 07 09 12 194 0 167 0 177 8 WARNING YES NO YES NG NO OK NO YES Turn off the power Then turn on the power to restart the system Check the radiation fin temperature Radiation fin dirty Check No 19 Check the outdoor fan Error again or outdoor fan activated Replace the outdoor unit PCB main PCB Clean up the radiati...

Страница 84: ...t PCB Troubleshooting Refer to Silicone Grease on Power Transistor Diode Bridge on page 95 for details Check No 17 Refer to P 89 Check No 19 Refer to P 90 A C B C A F B F 07 09 12 90 0 84 0 07 09 12 194 0 183 2 Turn off the power Then turn on the power to restart the system NO NG OK NO YES Check the radiation fin temperature NO YES YES Above A C F Check No 19 Check the outdoor fan Error displayed ...

Страница 85: ...or occurs while the compressor is running An output overcurrent is fed from the output overcurrent detection circuit to the microcomputer If error repeats the system is shut down Reset condition Continuous run for about 5 minutes without any other error Supposed Causes Poor installation condition Closed stop valve Defective power module Wrong internal wiring Abnormal power supply voltage Defective...

Страница 86: ...uit of wire breakage between compressor s coil phases 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 Fully open the stop valve Replace the compressor Correct the power supply Check the discharge pressure Go to Check No 18 Replace the outdoor unit PCB main PCB...

Страница 87: ...anges in the operating mode Malfunction Decision Conditions A following condition continues over 10 minute after operating 5 minutes Cooling dry operation room temp indoor heat exchanger temp 5 C 9 F Heating indoor unit heat exchanger temp room temp 5 C 9 F Supposed Causes Connector in poor contact Thermistor defective Outdoor unit PCB defective Four way valve coil or harness defective Four way va...

Страница 88: ...ck No 01 Check the thermistors Check No 14 Check the refrigerant line Refrigerant shortage Water mixed Stop valve Replace the defective thermistor s Correct the four way valve coil Reconnect the harness Replace the four way valve coil Replace the outdoor unit PCB main PCB Reconnect the thermistor s Refer to the refrigerant line check procedure Replace the four way valve defective or dust clogged B...

Страница 89: ...erence Reference Note Check No 01 Refer to P 85 Check No 13 Refer to P 87 Check No 14 Refer to P 88 When replacing the defective thermistor s replace the thermistor as ASSY DAMA SM 21 003 Inverter Multi Split CTX Series book Page 84 Wednesday September 1 2021 5 44 PM ...

Страница 90: ...sistance between the both ends of soldered thermistor Tolerance resistance type A 5 Tolerance resistance type B 2 Multimeter Resistance range Thermistor ASSY Soldered thermistor Multimeter Thermistor temperature C Type A Type B R 25 C 20 kΩ R 25 C 10 kΩ 20 198 73 15 149 57 10 113 45 5 86 35 0 66 28 5 51 23 10 40 18 15 32 15 20 25 12 25 20 10 30 16 8 35 13 7 40 11 6 45 9 5 50 7 4 Thermistor Resista...

Страница 91: ... PCB 2 Turn the power off and on again and check if the EV generates a latching sound 3 If the EV does not generate a latching sound in the step 2 above disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 5 1 5 2 5 3 5 4 for 5P connectors If there is no continuity between the pins the EV coil is faulty 5 If the continuity is confirmed in ste...

Страница 92: ...ized Turn the power off and then on again S80 voltage at 310 340 VDC with compressor onΩ Fig 1 Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 500 2300Ω Replace the outdoor unit PCB main PCB Replace the four way valve coil Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Cauti...

Страница 93: ...e for CTX07 09 12 Refrigerant system check Is the discharge pipe thermistor disconnected from the holder Check for refrigerant leakage See the section on refrigerant shortage detection YES NO Reconnect the thermistor Replace the refrigerant Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution PCB S70 Free Free Phase W Phase V Phase U R2...

Страница 94: ...he outdoor temperature The outdoor temperature should be within the operation range Change the installation location or direction Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution YES YES YES NO NO NO Is the stop valve open Open the stop valve Replace the compressor Discharge pressure check Is the air filter or indoor outdoor heat ex...

Страница 95: ...Diagram Main Circuit Short Check for CTX07 09 12 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 Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution Positive terminal of digital multimeter 2 3 4 2...

Страница 96: ...measurement results referring to the following table Diagram Power Module Check for CTX07 09 12 Compressor Positive terminal of digital multimeter Power module UVW Power module UVW Negative terminal of digital multimeter UVW Power module UVW Power module Resistance is OK several kΩ several MΩ Resistance is NG 0 Ω or Fan motor Positive terminal of digital multimeter Power module UVW Power module UV...

Страница 97: ...ettings 1 Pump Down Operation 93 2 Forced Cooling Operation 94 3 Silicone Grease on Power Transistor Diode Bridge 95 Part 6 Trial Operation and Field Settings DAMA SM 21 003 Inverter Multi Split CTX Series book Page 92 Wednesday September 1 2021 5 44 PM ...

Страница 98: ...the liquid stop valves and the gas stop valves 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valves with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valves and stop the forced cooling operation Refer to page 94 for forced cooling operation Gas stop valve Valve cap Close Liquid stop valve Service port Hexagonal wrench DAMA SM 21 003 Inverter Mul...

Страница 99: ...tdoor unit is not operating Protection functions have priority over all other functions during forced cooling operation Details With indoor unit ON OFF switch Press indoor unit ON OFF switch SW1 for at least 5 seconds The operation will start Forced cooling operation will stop automatically after about 15 minutes To stop the operation press indoor unit ON OFF switch ON OFF switch DAMA SM 21 003 In...

Страница 100: ...licone 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 applied OK Evenly applied NG Not evenly ...

Страница 101: ...ring Diagrams 98 2 1 Indoor Unit 98 2 2 Outdoor Unit 98 2 3 Printed Circuit Board Connector Wiring Diagram 99 2 4 Printed Circuit Board Connector Wiring Diagram 100 2 5 Operation Limit 102 Part 7 Appendix DAMA SM 21 003 Inverter Multi Split CTX Series book Page 96 Wednesday September 1 2021 5 44 PM ...

Страница 102: ...7 1 Piping Diagrams 1 1 Indoor Unit Model CTX07 09 12A 1 2 Outdoor Unit Model 2MX18A Note Dimension in inch Note Dimension in inch 3D134515 3D134478 DAMA SM 21 003 Inverter Multi Split CTX Series book Page 97 Wednesday September 1 2021 5 44 PM ...

Страница 103: ...A SM 21 003 98 Appendix 2 Wiring Diagrams 2 1 Indoor Unit Model CTX07 09 12A 2 2 Outdoor Unit Model 2MX18A 3P599152C 3P631402 DAMA SM 21 003 Inverter Multi Split CTX Series book Page 98 Wednesday September 1 2021 5 44 PM ...

Страница 104: ...mistor R2T 4 CN_DCFN Connector for DC fan motor 5 LIVE NEUTRAL SIG Connector for terminal strip 6 EARTH Connector for terminal strip frame ground 7 F101 F1U F111 F2U Fuse 3 15 A 250 V 8 V101 R2V Varistor 1 CN_DSP1 Connector for control PCB A1P 2 SW201 BS1 Indoor unit ON OFF switch Forced cooling operation ON OFF switch Refer to page 94 for detail of forced cooling operating 3 COOL HEAT LED H1P LED...

Страница 105: ...onic expansion valve coil 2 S40 Connector for overload protector 3 S71 Connector for DC fan motor 4 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe temperature 5 HL1 HN1 S Connector for terminal strip 6 E1 E2 Terminals for earth wire 7 U V W Connector for compressor 8 FU2 F2U Fuse 3 15 A 250 V 9 FU3 F3U Fuse 20 A 250 V 10 LED A LED for service monitor green ...

Страница 106: ...nector for DC fan motor 4 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe temperature 5 HL1 HN1 S Connector for terminal strip 6 E1 E2 Terminals for earth wire 7 U V W Connector for compressor 8 FU1 F1U FU2 F2U Fuse 3 15 A 250 V 9 FU3 F3U Fuse 30 A 250 V 10 LED A LED for service monitor green 11 V1 R1V V2 R2V V3 R3V Varistor DAMA SM 21 003 Inverter Multi Spl...

Страница 107: ...14 50 57 2 68 73 4 82 4 86 70 64 4 60 50 41 32 23 14 5 50 68 86 COOLING OUTDOOR TEMP FDB OUTDOOR TEMP FWB INDOOR TEMP FWB INDOOR TEMP FDB HEATING Continuous operation Continuous operation Pull down period 3P621387 1 DAMA SM 21 003 Inverter Multi Split CTX Series book Page 102 Wednesday September 1 2021 5 44 PM ...

Страница 108: ...yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion z Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electr...

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