Service Manual
Contents
1. CFT 100A Ro WIRING DIAGRAM e POWER 380V 3N 50Hz 8 CODE PART NAME CONTROL BOARD p mm COMPRESSOR ui FAN3 OUTDOOR FAN E CN201 CN100 CN200 1201 CAP3 FAN BLACK HI pe 3882 maan S V WW VALVE RED LON amp mds gt 3 TE KML AC CONTACTOR Xn HAT TERMINAL CON arr BUE XT5 7 CONNECTOR I Pe wasi H PRO HIGH PRESSURE SITO BLUE BLUE Wo poua T201 CURRENT DETECTOR BLUE L 90 Y BLUE LI RT3 PIPE TEMP SENSOR BLEW HEATER U XS8 9 CONNECTORS XP8 9 CONNECTORS NEN cn100 208 P C BOARD SOCKETS T PROTECT SWITCH EEEE TERMINAL 15 TRANSFORMER TO INDOOR XTI TO INDOOR XT1 Outdoor Units 29 Wiring Diagrams CFT 140A Ro CFT 170A Ro H RPO K1 T5 WIRING DIAGRAM OUTDOOR UNIT n AC CONTACTOR HEATER CRANK 4 WAY TERMINAL XT5 7 CONNECTOR H L PRO HIGH LOW PRESSURE SWITCH PIPE TEMP SENSOR XS7 9 CONNECTORS XP7 9 CONNECTORS CN100 208 BOARD SOCKETS TEMP PROTECT SWITCH 5 WAY TERMINAL z TRANSFORMER CURRENT DETECTOR 202075890205 BLACK L1 BLA2. GREEN NBROWN ___ IS YELLOW FS Luo TO OUTDOOR UNIT TO OUTDOOR UNIT FOR OUTDOOR POWER SUPPLY FOR INDOOR POWER SUPPLY 10 Ceiling amp Floor Type Air Velocity and Temperature Distributions Reference Data 5 Air Velocity and Temperature Distributions Reference Data Discharge angle 60 CEILING Airflow velocity 3m im Om Temperature 3m Om Om Im 2m 3m Am Ceiling amp Floor Type Air Velocity and Temperature Distributions Reference Data Discharge angle 60 FLOOR Temperature am Im Om 3m Am Airflow velocity 3m 0 5 Im Om Am 12 Ceiling amp Floor Type 6 Electric Characteristics Electric Characteristics Indoor Units Power Supply Model Hz Voltage Min Max MFA CFT 35A Ri 50 220 240V 198V 254V 16 CFT 50A Ri 50 220 240V 198V 254V 16 CFT 70A Ri 50 220 240V 198V 254V 25 CFT 100A Ri 50 380 415V 342V 418V 20 CFT 140A Ri 50 380 420V 342V 440V 20 CFT 170A Ri 50 380 420V 342V 440V 20 Note MFA Max Fuse Amps A Ceiling amp Floor Type 13 Sound Levels 7 Sound Levels Air outlet side 1m x 1m 1m Air outlet side indoor TE unit Microphone Ceiling Floor Noise level dB A Model H M L CFT 35A Ri 43 41 38 CFT
3. eI 24 27 5 Electric Characteristics lis 31 6 Operation Limits iia 32 y OUMA IRI 33 20 Outdoor Units 1 Dimensions Dimensions Je 1 zE iH 11 LL ul ouo 1 mm Model A B H CFT 35A Ro 780 548 266 300 241 250 547 CFT 50A Ro 762 530 290 315 270 282 593 CFT 70A Ro 842 560 335 360 312 324 695 CFT 100A Ro 990 624 366 396 340 354 966 Outdoor Units 21 Dimensions 14 LL Q t mm Model A B C D E F H CFT 140A Ro 900 590 378 400 330 340 1167 CFT 170A Ro 900 590 378 400 330 340 1167 22 Outdoor Units Service Space 2 Service Space Wall or obstacle Air More than 30cm More than 60cm More than 30cm m Y Maintain channel Air inlet f More than 6
4. Outdoor Units 25 Piping Diagrams CFT 170A R INDOOR OUTDOOR 4 CHECK VALVE LIQUID SIDE Heating Model only 00000 O 2 WAY VALVE T3 Condenser 00000 temp sensor CAPILIARY TUBE EVAPORATOR T1 Room temp T4 Ambient y EXCHANGE sensor temp sensor CONDENSER T2 Evaporator temp sensor GAS SIDE E v v JNNA WAY VALVE gt lt gt lt ENA 3 WAY VALVE Accumulator Oil separator COOLING Oil return Capillary lt HEATING Outdoor Units 26 Wiring Diagrams 4 Wiring Diagrams CFT 35A Ro 2204709301 FAN CAP 4 WAY VALVE WIRING DIAGRAM OUTDOOR UNIT TEMPERATURE SENSOR OF CONDENSATOR elelelele XT2 XT1 Y G TO INDOOR UNIT TO INDOOR UNIT Outdoor Units 27 Wiring Diagrams CFT 50A Ro ennn TO INDOOR UNIT OUTDOOR UNIT TEMPERATURE SENSOR OF CONDENSATOR This symbol indicates the element is optional the actual shape shall prevail TO INDOOR UNIT COMPRESSOR G CAPACITOR E H WIRING DIAGRAM LE WER OUTDOOR UNIT CODE 1 2 2 TO INDOOR UNIT 28 Outdoor Units Wiring Diagrams
5. ss oss 12 254954 4 oss 12 241082 ar 3873 er oss 2 22502 3746 osos 12 49 asea eo 2 207184 so 34097 9 10 15348 s 27323 os 9794 1 aso se os oses 138 ezen 2447 9 139 0 59386 0 57683 0 56038 0 54448 0 52912 0 51426 0 49989 0 48600 0 47256 0 45957 0 44699 0 43482 0 42304 0 41164 0 40060 0 38991 0 37956 0 36954 0 35982 0 35042 0 3413 0 33246 0 32390 0 31559 0 30754 0 29974 0 29216 0 28482 0 27770 0 27078 0 26408 0 25757 0 25125 0 24512 0 23916 0 23338 0 22776 0 22231 Electrical Co ntrol 53
6. TOYOTOMI service Manual MODEL CFT35A R CFT50A R CFT70A R CFT100A R CFT140A R CFT170A R Features 1 1 Optional drainage pipe connection gt Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe installation Make you more convenient during installation 1 2 Panels AMET 5 5 gt STANDARD Panel B Panel LED display 1 3 Convenience operating and easy maintenance Remote controller as standard wired controller for optional gt filter without screw fixed be took out easily 1 4 Easy installation save working time The pipes can be connected from bottom back and right side makes the installation more easily gt The wiring works be finished before installation as 1 5 Outside water pump for optional when ceiling installation Ceiling amp Floor Type 2 Dimensions a Wall mounting installation Dimensions
7. 1 3 6 Timer function 1 3 6 1 Timing range is 24 hours 42 Electrical Control Electrical Control Function 1 3 6 2 Timer on The machine will turn on automatically when reaching the setting time 1 3 6 3 Timer off The machine will turn off automatically when reaching the setting time 1 3 6 4 Timer on off The machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 1 3 6 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 1 3 6 6 The timer function will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has not been changed For high static pressure duct amp cassette The timer function will change the AC current operation mode Suppose users set the timer off function and AC is off now the AC will turn on firstly and then turn off when reaching the setting time 1 3 6 7 The setting time is relative time 1 3 7 Economy function 1 3 7 1 It is valid in cooling heating and auto mode 1 3 7 2 Turning off changing mode or setting fan speed will cancel economy function 1 3 7 3 Operation process in sleep mode is as follow After pressing ECONOMIC or SLEEP button on t
8. 5 Y G 1 TO OUTDOOR UNIT TO OUTDOOR UNIT POWER 8 Ceiling amp Floor Type Wiring Diagrams CFT 100A Ri 202044790324 ring diagram DISPLAY BOARD TO WIRE CONTROLLER is for explanation purpose only The INDOOR WIRING actual shape of the DIAGRAM components may be coe PART NAME different CAP1 CAP2 INDOOR FAN CAP 1 24 P C BOARD SOCKETS T4 TRANSFORMER FAN2 INDOOR FAN CONNECTORS CONNECTORS ROOM TEMP SENSOR RT2 PIPE TEMP SENSOR GM1 GM3 LEVEL SWING MOTOR ST PLUMB SWING MOTOR REMOTE W SENSOR 0 N amp OFF OUTDOOR UNIT TO OUTDOOR UNIT INDOOR POWER SUPPLY FOR OUTDOOR POWER SUPPLY Ceiling amp Floor Type Wiring Diagrams CFT 140A Ri CFT 170A Ri 202044690219 viring diagram is for explanation purpose only The 1 BOARD WIRE CONTROLLER actual shape of the components may be different INDOOR WIRING DIAGRAM CODE PART NAME CAP1 CAP2 INDOOR FAN CAP CN1 CN24 P C BOARD SOCKETS T4 TRANSFORMER FAN1 FAN2 INDOOR FAN 175 CONNECTORS XS175 CONNECTORS ROOM TEMP SENSOR RT2 PIPE TEMP SENSOR GM1 GM3 LEVEL SWING MOTOR PLUMB SWING MOTOR W P SENSOR
9. A C J Y D an rt tij te Gar 3 LX 5 b Ceiling installation F G ed 7 Z IN Z b T q z Li Thuy T T unm t 4 fi UT Capacity Btu h A B D E F G 12000 24000 990 660 203 505 506 907 200 30000 36000 1280 660 203 795 506 1195 200 48000 60000 1670 680 240 1070 450 1542 200 Note The dimension of 12000Btu h 18000Btu h and 24000Btu h are the same The dimension of 30000Btu h and 36000Btu h are the same The dimension of 48000Btu h and 60000Btu h are the same Ceiling amp Floor Type Service Space 3 Service Space gt 35mm Ceiling amp Floor Type Wiring Diagrams 4 Wiring Diagrams 35A Ri 50A Ri DISPLAY TO WIRE CONTROLLER 202044190002 INDOOR WIRING DIAGRAM GODE PART WANE INDOOR FAN CAP CN1 CN24 BOARD SOCKETS 174 CONNECTORS RELAY FOR COMPRESSOR LEVEL SWING MOTOR PLUMB SWING MOTOR 9 2 9 OG 292 299 Ceiling amp Floor Type 7 Wiring Diagrams CFT 70A Ri I 2204429002 DISPLAY FER WIRE CONTROLLER BOARD XP1 xs1 INDOOR WIRING DIAGRAM LEVEL SWING MOTOR RED WHITE MAIN CONTROL BOARD J 5 8 1 TO JE Da WIL Y G
10. If it is open the system will stop until the fault is cleared During defrosting procedure and 4 minutes after defrosting ends low pressure switch won t be checked Note The system will not check if the protection could be cleared in 30 seconds after the protection occurs If this protection occurs 3 times it won t recover automatically until the main power is cut off 1 2 5 Over current protection When compressor is running if the current is over twice of the rated for 3 seconds the compressor will stop and an error code will be displayed on the outdoor PCB If the current becomes normal the compressor will restart after 3 minutes Note The current won t be checked within 3 seconds after the compressor starts The system will not check if the protection could be cleared in 30 seconds after the protection occurs Electrical Control 35 Electrical Control Function 1 3 Operation Modes and Functions 1 3 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode 5 Auto fan Big Cassette T1 High 27 C 24 Low Compact Cassette T1 High 27 C 25 C Low Others type T1 27 Z High 26 Medium 24 Y Low 1 3 2 Cooling Mode 1 3 2 1 Outdoor fan running rules For 1 phase outdoor units The On off outdo
11. 50A Ri 43 41 38 CFT 70A Ri 45 43 40 CFT 100A Ri 45 43 40 CFT 140A Ri 50 47 45 CFT 170A Ri 50 49 47 14 Ceiling amp Floor Type 8 Accessories Accessories Name Quantity 1 Hook 2 Installation fittings 2 Hanging arm 2 3 Remote controller 1 R t troller amp It 4 Remote controller holder 1 5 Mounting screw ST2 9x10 C H 2 6 Alkaline dry batteries AM4 2 Others 7 Owner s manual 8 Installation manual 9 Remote controller manual Ceiling amp Floor Type 15 The Specification of Power 9 The Specification of Power Cooling amp Heating 12000 18000 30000 36000 30000 60000 Btu h 24000Btu h Btu h Btu h Phase 1 phase 1 phase 1 phase 3 phase Power Erates and Voltage 220 240V 220 240V 220 240V 380 415V quency 9 50Hz 50Hz 50Hz 50Hz Circuit Breaker Fuse A 20 16 40 25 50 30 25 20 Indoor Unit Power Wiring mm 3x2 5 3x2 5 3x4 0 5x2 5 Ground Wiring 2 5 2 5 4 0 2 5 Outdoor Unit Power Wiring 3x2 5 3x2 5 3x4 0 5x2 5 Indoor Outdoor Strong Electric Signal 2x1 0 3x1 5 3x1 0 3x1 0 C ting Wiri i 4 2 shield 2 core shield Weak Electric Signal Dison wire 2x0 75 wire 2x0 75 2 0 5 2 2 bim mm mm 16 Ceiling amp Floor Type Outdoor Units Outdoor Units 1 DIMENSION Susi ir A a cis 21 2 Service SPACG sd 23 3
12. is in evaporator high temp protection in heating mode condenser high temp protection in cooling mode defrosting mode and the current protection For 3 phase outdoor units 144 4 Low 16 High Y 38 Electrical Control Electrical Control Function 1 3 3 2 Indoor fan running rules When the compressor is on the indoor fan can be set to high med low auto And the anti cold wind function has the priority Anti cold wind function When evaporator coil temp T2 is getting higher T2 gt TE2 the indoor fan will run at setting speed TE1 T2 TE2 the indoor fan will run at low speed When T2 is getting lower TE4 lt T2 lt TE3 the indoor fan will run at low speed T2 lt TE4 the indoor fan will shut off T2 4 TE2 N Setting P N N TE3 fed SA Low 4 Off 1 Only for DL If the compressor stops caused by the room temperature rising the indoor fan will follow the below rules During this period the anti cold wind is disabled T2 TE14 2 C w men off Auto fan action For DL floor installation T1 TS 0 C EN Low 1 2 C High Electrical Control 39 Electrical Control Function For DL ceiling installation amp duct T1 TS MI mee e 29C 196 High For cassette T1 TS 3 C Low 1 C High 1 3 3 3 Defrosting mode For 1 phase outdoor units e Condition of defrosting AC will enter defrosting mode if any of the following i
13. 0cm y Air outlet More than 200cm Outdoor Units B Piping Diagrams 3 Piping Diagrams CFT 35A Ro CFT 50A Ro CFT 70A Ro CFT 100A Ro INDOOR OUTDOOR CHECK VALVE LIQUID SIDE 4 Heating Model only OTD 2 WAY VALVE TO temp sensor CAPILIARY TUBE u Ww y HEAT V HEAT 1291 EXCHANGE VJ EVAPORATOR j CONDENSER n T1 Room temp Y sensor PA PA EN PA po oN T2 temp sensor gt GAS SIDE lt l 3 WAY VALVE ACCUMULATOR C 5 lt COOLING COMPRESSOR 4 HEATING For CFT 35A Ro CFT 50A Ro CFT 70A Ro the accumulator is not included 24 Outdoor Units HEAT EXCHANGE EVAPORATOR T2 Evaporator temp sensor Piping Diagrams CFT 140A R INDOOR OUTDOOR lt 4 LIQUID SIDE CHECK VALVE qe Heating Model only 4 gt 00000 2 WAY VALVE T3 Condenser 00000 temp sensor H CAPILIARY TUBE T1 Room temp t 0 T4 Ambient temp sensor poses cm GAS SIDE 4 J 54 nq DSG 7 EWAY VALVE lt I P 3 WAY VALVE ACCUMULATOR 4 COOLING COMPRESSOR lt HEATING
14. CK L2 Im 2 34 INDOOR XT2 TO INDOOR XT1 L 30 Outdoor Units Electric Characteristics 5 Electric Characteristics Outdoor Unit Model Voltage Min Max CFT 35A Ro 220 240V 198V 254V CFT 70A Ro 220 240V 198V 254V CFT 100A Ro 380 420V 342V 440V CFT 140A Ro 50 380 420V 342V 440V CFT 50A Ro 220 240V 198V 254V CFT 170A Ro 50 380 420V 342V 440V Outdoor Units 31 Operation Limits 6 Operation Limits mperature Cooling operation Heating operation Room temperature 17 C 32 C 0 C 30 C 18 C 43 C Outdoor temperature 7C7 43 C For the 7 C 24 C models with low temperature cooling system Cooling 45 40 35 STD 30 Heating m 25 25 a 24 o w 20 20 E 18 o LLLI II Vivi S EH SSS VAN Z 9 15 7 15 Y Va D A 2 Le OG 5 A s 10 EN wi 2 5 10 8 y ith Low Z STD 5 Ambient Z 5 Cooling 5 GA System 5 2 Z 3 5 0 8 92 IG 5 Eine 5 E i WT 10 10 10 1517 20 25 3032 35 0 5 10 15 20 25 30 Indoor temperature C WB Indoor temperature C WB 32 Outdoor Units 7 Sound L
15. Control 43 Electrical Control Function If the error disappears in 3 minutes the drain pump will work as normal state if it is necessary to turn off the pump it will be off in 1 minute delay If the error is still there in 3 minutes the drain pump will be off as well as the AC unit The error can be cleared only when the power of the unit is cut off 44 Electrical Control Troubleshooting 2 Troubleshooting 2 1 Display board 2 1 1 Icon explanation on indoor display board Big cassette Temporary button Digital LED Infrared signal receiver 7 OPERATION TIMER DEF FAN Operation lamp Timer 7 Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type 2 1 2 Icon explanation on indoor display board Compact cassette amp High static pressure Duct Infrared signal receiver Temporary button Operation lamp Timer indicator Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type 2 1 3 Icon explanation on indoor display board Ceiling amp Floor 10 Operation lamp OPERATION CD D TIMER DEF FAN amp e indicator cooling and heating pe or fan only indicator cooling only type Timer indicator Alarm indicator Temporary button Infrared signal receiver 2 1 4 Icon explanation on indoor display board A5 Duct PRE DEF indicator cooling and heating type or fa
16. X X EEPROM malfunction X X X x Full water malfunction Note O means X means off 5 means flashes at 5Hz means flashes at 0 5Hz 46 Electrical Control LEDs for the indication of outdoor trouble Troubleshooting Type Contents LED1 LED2 LED3 Trouble Phase sequence Flash Off Off Trouble Lack of phase A B Flash Off Off Trouble Lack of phase C Off Off Off Trouble Protection of Low pressure Flash Flash Off Trouble Overload of current Off Off Flash Trouble Communication malfunction Flash Off Flash Trouble Open circuit and short circuit trouble of T3 Off Flash Flash Trouble Open circuit and short circuit trouble of T4 Off Flash Off Trouble High temperature protection of condenser Flash Flash Flash Note 1 If the LED1 LED3 are flashing slowly 2 T3 Outdoor condenser temperature sensor 3 T4 Outdoor ambient temperature sensor means the system is stand by Electrical Control 47 Troubleshooting 2 3 Solving steps for typical malfunction 1 For indoor unit a Indoor room temperature 1 and sensor evaporator temperature sensor T2 is abnormal Is connection to connector of temp sensor good Yes Repair connector Check the resistance of the temp sensor according to Appendix 1 Is it the resistance is normal Indoor PCB is defective Replace the sensor b Condenser temperature sen
17. e sensor g High temperature protection of condenser High temperature protection of condenser Check the resistance of the temp sensor according to Appendix 1 is it normal Possible reason Replace the sensor Air or other gas in the refrigerant Heat exchanger is dirty Outdoor fan or fan blade is defective Outdoor unit is bad ventilation Refrigerant is leakage 52 Electrical Control Appendix 1 Temperature Sensor Resistance Value Table Troubleshooting vc kom c kom c Kom kom 15200 20 mes oo 23574 1 0693 20 A 17 A 15 gt Ns o 10 aj oO 13 15 17 Eee us EX XE EEN NE Rer qe SE pec EG pre F pe ae 45 19 793110 26 955074 os 189627 10 70165 20 ore 68 10 20 eo 47047 10 are 30 797 mo 32 729464 rz 150008 me gt r ms ao 34 74 ma 465725 75 tas ms 440000 3 76 tomos se sr sere m 1208 mr gt 39823 3s 560 re 1 me oe so 79 1209 mo 352024 4o sms 2 ses 4 1098 2 205058 4 10948 12 283450 439736 1 03000 2 zere as
18. evels 12000Btu h 48000Btu h Outdoor Unit Microphone ZA KE 1 0m Note H 0 5 x height of outdoor unit Outdoor Unit Essl 7 i L i Sound Levels 60000Btu h Microphone AS 1 0m Note The point A is in the middle of the whole outdoor panel Model Noise level dB A CFT 35A Ro 43 CFT 50A Ro 54 CFT 70A Ro 55 CFT 100A Ro 57 CFT 140A Ro 59 CFT 170A Ro 59 Outdoor Units 33 Elecrica Control Electrical Control System 1 Electrical Control Function 35 2 Troubleshooting eae cent eat toe 45 3 Controller itse e BIRKEN 34 Electrical Control Electrical Control Function 1 Electrical Control Function 1 1 Definition T1 Indoor room temperature T2 Coil temperature of evaporator T3 Coil temperature of condenser T4 Outdoor ambient temperature T5 Compressor discharge temperature 1 2 Main Protection 1 2 1 Time Delay at restart for compressor 1 2 2 Sensor protection at open circuit and breaking disconnection 1 2 3 Phase check function If the phase sequence is detected wrong or lack of 1 or 2 phase the unit won t start and there is error code displayed on outdoor PCB 1 2 4 Low pressure check function The low pressure switch should be always closed
19. he controller the machine will go into economy mode When cooling the setting temperature rises 1 C be lower than 30 C every hour 2 hours later the setting temperature stops rising For heat pump models when they are in heating the setting temperature reduces 1 C be higher than 17 C every hour 2 hours later the setting temperature stops reducing 1 3 7 4 In this mode the fan speed is forced into AUTO mode 1 3 8 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including Swing function automatically after 3 minutes when power returns 1 3 9 Drain pump control For duct amp Cassette 1 3 9 1 Water level check The water lever will be checked every 5 seconds if the feedback signal is abnormal it will be considered as drain water full by the control system 1 3 9 2 Drain pump control If there is no water full error the drain pump will be on when the unit is in cooling mode including auto cooling and forced cooling and dry mode It will be off when the unit is in heating mode fan only mode or off state if the pump is on before the unit is off it will delay 3 minutes to be off If there is a water full error the drain pump will be on when the error occurs Afterwards Electrical
20. n only indicator cooling only type Timer indicator Alarm indicator Operation lamp Infrared signal receiver Temporary button Display digital tube MANUAL OPERATION TIMER DEF FAN ALARM J J Electrical Control 45 Troubleshooting 2 2 Self diagnosis Indoor unit s LED indication 1 For the Big Four way cassette amp the A5 Duct During malfunction or protection the indicators and digital LED displays as follow No Operation Timer Def Fan Alarm Digital LED Display Malfunction or protection 1 X X X E2 Indoor temperature sensor is abnormal 2 x X X X Evaporator temperature sensor is abnormal 3 X X x X 4 Condenser temperature sensor is abnormal 4 x x X X E7 EEPROM malfunction 5 X X X x E8 Full water malfunction Note X means off sx means flashes at 5Hz 2 For the other types indoor unit No Operation Timer Def Fan Alarm Information Remark 1 X X X Normal standby 2 X X X X Normal off Nothing wrong with the unit when LED indicate these 3 X X X Normal running contents 4 X X Forced cooling Indoor temperature sensor is X X X abnormal 6 X X X X Evaporator temperature sensors Recover automatically after abnormal Sie Condenser temperature sensor is errors are eliminated For F9 7 x x x X malfunction of 5HP can t abnormal 5 recover automatically 8 x x
21. or 10 minutes in defrosting Defrosting action The compressor is running and 4 way valve and outdoor fan stop The indoor fan works as anti cold wind procedure When defrosting is over the compressor keeps running and the 4 way valve and outdoor fan will start up Electrical Control 41 Electrical Control Function 1 3 3 4 High evaporator coil temp T2 protection For DL TE7 Compressor off Outdoor fan off Compressor and Outdoor fan off Compressor and TE9 Outdoor fan on Compressor and Outdoor fan on For duct amp cassette Compressor off Outdoor fan off Compressor on Outdoor fan on TE9 TE8 TE10 1 3 4 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or fan only mode according to AT AT T1 Ts Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the machine switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 1 3 5 Drying mode 1 3 5 1 The indoor fan will keep running at low speed 1 3 5 2 All protections are active and the same as that in cooling mode 1 3 5 3 The louver operates the same as in cooling mode
22. or units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heating mode condenser high temp protection in cooling mode defrosting mode and the current protection For 3 phase outdoor units 36 Electrical Control Electrical Control Function High 33 9 30 Low 1 3 2 2 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto The auto fan Big cassette T1 TS 4 High 1 Low Compact cassette T1 TS 3 C High 1 C Low Others type T1 Ts 4 4 High 3 Medium 1 Y Low 37 Electrical Control Electrical Control Function 1 3 2 3 Low evaporator coil temperature T2 protection T2 On TE6 TES When the evaporator coil temp T2 keeps lower than 5 for 3 minutes the compressor and outdoor fan will shut off When T2 is higher than TE6 the compressor and outdoor fan will restart up 1 3 2 4 Condenser high temperature T3 protection T3 Off TE12 TE13 On When T3 gt TE12 for Time1 the compressor will shut off When TE13 the compressor will restart 1 3 3 Heating Mode For heat pump models 1 3 3 1 Outdoor fan running rules For 1 phase outdoor units The On off outdoor units have single fan speed The outdoor fan will run following the compressor except when AC
23. ower supply is it 3 phase 380 415V Yes Check the connection between power supply and terminal is the voltage in outdoor terminal is 3 phase 380 415V Yes Outdoor PCB is defective 50 Electrical Control Troubleshooting d Protection of pressure or temp Protection of pressure or temp Yes Is it or K2 open 2 Is temp protective switch K1 open Is pressure protective switch K2 open Possible reason Possible reason 1 The wires is loose to K1 1 The wires is loose to K2 2 Air or other gas in the refrigerant 2 Air or other gas in the refrigerant 3 Heat exchanger is dirty 3 Heat exchanger is dirty 4 Outdoor fan or fan blade is 4 Outdoor motor or fan blade is defective defective Outdoor unit is in bad ventilation Outdoor unit is in bad ventilation Refriaerant is leakaae Refriaerant is too much Open circuit and short circuit trouble of Is connection to connector of temp sensor good Yes Repair connector Check the resistance of the temp sensor according to Appendix 1 Is it the resistance is normal Indoor PCB is defective Replace the sensor Electrical Control 51 Troubleshooting f Open circuit and short circuit trouble of T4 Is connection to connector of temp sensor good Yes Check the resistance of the temp sensor according to Appendix 1 No Repair connector Is it the resistance is normal Indoor PCB is defective Replace th
24. sor T3 is abnormal Is connection to connector of temp sensor good Yes Repair connector Check the resistance of the temp sensor according to Appendix 1 Is it the resistance is normal Indoor PCB is defective Replace the sensor 48 Electrical Control Troubleshooting EEPROM malfunction EEPROM malfunction EEPROM chip is broken Replace EEPROM Replace the control chip Check whether the main control chip is broken Check PCB board or replace the main control board f Full water malfunction Full water malfunction No Check whether the water level switch is inserted well neerde w terjevel swileh well Yes Yes Check whether the water level switch is broken Replace the water level switch No No Check whether the water pump is normal Replace the water pump Yes Check PCB board or replace the main control board Electrical Control 49 Troubleshooting 2 For the outdoor unit a Phase sequence error Change the order of two of the wires to power supply Switch on the unit again If the problem cannot be solved the outdoor PCB is defective b Overload of current Overload of current Check the current normally Is the current in rated range Yes Possible reason Outdoor fan is defective The compressor is defective Refrigerant is over charged Air enter the refrigerant system c Lack of phase Lack of phase Check the p
25. tems is satisfied A For DL high static pressure duct amp cassette The compressor keeps running over 40 minutes and T3 lt 2 For A5 duct T3 0 C and the compressor keeps running over 45 minutes Meanwhile T3 lt 3 C for 3minutes B After the last defrosting the time that the outdoor fan is off but the compressor is on in high T2 protection cumulates up to 90 minutes Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mode A T3 rises to be higher than 20 C B The machine has run for 10 minutes in defrosting Defrosting action For A5 duct 40 Electrical Control Electrical Control Function Setting defrosting time 458 455 Outdoor an Indoor fan 10S For the others type The compressor is running and 4 way valve and outdoor fan stop The indoor fan works as anti cold wind procedure When defrosting is over the compressor keeps running and the 4 way valve and outdoor fan will start up For 3 phase outdoor units e Condition of defrosting T3 0 C and the compressor keeps running over 45 minutes Meanwhile T3 lt 3 C for 3minutes Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mode A T3 rises to be higher than 20 C B The machine has run f
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