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Air Conditioner Service Manual

WYT018GLFI19RL, WYT024GLFI19RL, WYT036GLFI19RL

10.3 Connection of ODU PCB

WYT009GLFI19RL, WYT009ALFI19RL, WYT012GLFI19RL, WYT012ALFI19RL

CN7

（

LEV

）

CN2

(OHT)

CN1

(OPTOAT)

CN3

(OVT)

CN401

(485-COM)

CN409

For
programmed

CN407
For EEPROM
programmed

(CAN-Blue)

(S-Black)

(ACL-Brown)

P00

P01

P5-1

、

(VAL)

Electric reactor

PC
monito

P10-3(W)

P10-2(V)

COMP.

（

Blue

）

（

White

）

（

Red

）

To indoor

Expansion v

alv
e

Suction

Tem
p

sen

Out

doo

r coil

Tem
p sen

sor

Outdo

mbient

Tem
p sen

CO
M

. to

Temp

ectio

Ex
hau
st

Tem
p.

sor

CN12

（

ORQ

）

P13 (L)

P 14 (L

)

P10-1(U)

CN12-2

P11-1

、

P11-2

(HEAT)

CN12-1

(DC fan motor

feedback)

CN410

(OUTFAN)

DRM3

DRM

DRM1

DRM

-COM

CN13

CN11

U405

IPM

DN401
rectiﬁer

Q403 IGBT

D412

Fast recovery
diode

Содержание WT009ALFI19HLD

Страница 1: ...NDITIONER HEAT PUMP IMPORTANT NOTICE Please read this manual carefully before installing or operating your new air conditioning system Be sure to save this manual for future reference Service Manual WYT Inverter Series For 9 000 36 000 BTU hr Systems ...

Страница 2: ...ns 3 Refrigeration cycle diagram 4 Operation details 5 Wiring diagram 6 Explosion view and parts 7 Precaution 8 Names of parts 9 Installation 10 WYT009ALFI19RL WYT009GLFI19RL WYT012ALFI19RL WYT012GLFI19RL WYT018GLFI19RL WYT024GLFI19RL WYT036GLFI19RL Air Conditioner Service Manual ...

Страница 3: ...sible for the interpretation of this information nor can it assume any liability in connection with its use The information speciﬁcations and parameter are subject to change due to technical modiﬁcation or improvement without any prior notice The accurate speciﬁcations are presentedon the nameplate label How to order spare parts T o have your order ﬁlled promptly and correctly please furnish the f...

Страница 4: ...C 10 2 WT036GLFI19HLD 1186 46 7 340 13 4 258 10 2 WT009GLFI19HLD 811 31 9 292 11 5 203 7 99 WT012GLFI19HLD 811 31 9 292 11 5 203 7 99 WT009ALFI19HLD 811 31 9 292 11 5 203 7 99 WT012ALFI19HLD 811 31 9 292 11 5 203 7 99 WT018GLFI19HLD 1010 39 8 315 12 4 220 8 7 WT024GLFI19HLD 1186 46 7 340 13 4 258 ...

Страница 5: ...2 2 810 31 9 549 21 6 305 12 0 433 8 17 1 278 10 9 48 1 9 62 2 4 810 31 9 549 21 6 305 12 0 433 8 17 1 278 10 9 48 1 9 62 2 4 863 34 602 23 7 349 13 7 516 20 3 314 12 4 54 2 1 63 2 5 927 36 5 699 27 5 380 15 586 23 347 5 13 7 58 6 2 3 63 2 5 975 38 4 808 31 8 433 17 675 26 6 398 15 7 50 2 63 2 5 YN036GLFI19RPD YN009GLFI19RPD YN009ALFI19RPD YN012ALFI19RPD YN018GLFI19RPD YN024GLFI19RPD YN012GLFI19RP...

Страница 6: ...ry Compressor Accumulator Heat exchange condenser Heat exchange Evaporator 2 way valve Liquid side 3 way valve Gas side Cooling Heating Gas side 3 way valve Liquid side 2 way valve Heat exchange Evaporator Heat exchange condenser Accumulator Compressor 4 way valve Capillary Assembly Check valve ...

Страница 7: ...g Only then you CAN NOTpreset the Heating operation with the remote controller 9 9 1 2 4 3 5 6 10 7 MODE button ECO button FAN SPEED button TEMP UP button TIMER button SLEEP button TEMP DOWN button To select the mode of operation In cooling mode press this button the temperature will increase 2 on the base of setting temperature In heating mode press this button the temperature will decrease 2 on ...

Страница 8: ...f there is no feedback to controller or load of compressor is abnormity the air conditioner will shut down and show error code 7 IPM module protection IPM module has high temperature over current protection itself if there is signal feedback to IPM the outdoor unit will shut down LED on outdoor PCB will show the error code 4 2 2 Feel Mode Operation 8 When the Feel mode is selected the operation mo...

Страница 9: ...ant circle as the cooling one 2 When the system operates in DRY mode at ﬁrst it operates in cooling mode the set temperature ST is RT 2 35 6 After that t he system will operate in cooling mode with lowest fan speed for 30 minutes and then change to middle speed for 30seconds as a cycle During the course of this operation you can t use remote controller to adjust the fan speed but you can control t...

Страница 10: ...runs for more than 80 minutes and OPT is keeping under 4 39 2 for more than 3 minutes c Outdoor heat exchanger Temperature OPT is continuously less than 3 37 4 while the unit runs for more than 120 minutes and OPT is keeping below 2 35 6 for more than 3 minutes Before the air con comes into defrosting compressor running frequency drop down to a lower frequency ﬁrstly then the compressor shuts down...

Страница 11: ...ng failed or the batteries run down press the EMERGENCY Operation switch on front of the indoor unit for function test NOTE Do not press the EMERGEMCY Operation switch during normal operation 4 2 8 AUTO RESTART Function Option While air conditioner is operating in one mode all of its operation data such as working mode preset temperature etc wouldbe memorized intoIC by main PCB If power supply cut...

Страница 12: ... code list Outdoor failure display There is a LED on outdoor power board it blinks 1s ON and 1s OFF while compressor standby and it always light ON whilecompressor running If there is failure happened on ODU The indicator LED alerts the fault in a cycle as such that it is bright for 0 5 seconds dark for 0 5 seconds blinks n times and then dark for 3 seconds For details as tablebelow ProtectionType...

Страница 13: ...circuit fault of exhaust temperature sensor 12 Voltage sensor fault 13 Current sensor fault 14 IPM fault 15 Communication fault between power source board and IPM 16 No feedback from DC fan motor outdoor unit 17 Defrost state 18 Suction temperature sensor fault 19 Outdoor EEPROM fault 20 Outdoor fan motor protection 21 Indoor fan motor protection 23 System fault 24 Model conﬁguration wrong 25 Indo...

Страница 14: ...Air Conditioner Service Manual 12 5 Wiring diagram MODEL WYT009ALFI19RL WYT012ALFI19RL INDOOR UNIT θ θ θ OUTDOOR UNIT θ θ θ ...

Страница 15: ...Air Conditioner Service Manual 13 MODEL WYT012GLFI19RL θ θ θ OUTDOOR UNIT POWER SOURCE BOARD U V θ θ θ W RED RED ...

Страница 16: ...Air Conditioner Service Manual 14 WYT009GLFI19RL WYT018GLFI19RL WYT024GLFI19RL WYT036GLFI19RL INDOOR UNIT OUTDOOR UNIT POWER SOURCE BOARD U V θ θ θ W RED RED ...

Страница 17: ...nd these means must be incorporated in the ﬁxed wiring in accordance with the wiring rules The air conditioner must be installed by professional or qualiﬁed persons Do not install the appliance at a distance of less than 50 cm from inﬂammable substances alcohol etc Or from pressurized containers e g spray cans If the appliance is used in areas without the possibility of ventilation precautions mus...

Страница 18: ...stalled by a qualiﬁed technician who must check that it is earthed in accordance with current legislation and insert a thermomagnetic circuit breaker The batteries in remote controller must be recycled or disposed of properly Disposal of Scrap Batteries Please discard the batteries as sorted municipal waste at the accessible collection point Never remain directly exposed to the ﬂow of cold air for...

Страница 19: ...g children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Do not climb onto or place any heavy or hot objects on top of the appliance Do not leave windows or doors open for long when the air conditioner is operating Do not direct ...

Страница 20: ...nel 2 Air ﬁlter 3 Special ﬁlter option 4 Display PCB 5 Vertical vane 6 Horizontal vane 7 Remote controller 8 Names of parts Outdoor unit No Name 8 Air outlet grille 9 Electronic box cover 10 2 way valve 11 3 way valve 1 2 3 4 6 5 7 INDOOR UNIT 8 9 10 11 OUTDOOR UNIT ...

Страница 21: ...dditional refrigerant B Calculation g Bg m A 5m 5 0 19 7 5 0 19 7 15 59 20g m 20g 3 94 15 59 20g m 20g 3 94 5 0 19 7 15 59 20g m 20g 3 94 5 0 19 7 15 59 20g m 20g 3 94 5 0 19 7 15 59 30g m 30g 3 94 5 0 19 7 15 59 30g m 00g 3 94 5 0 19 7 15 59 30g m 30g 3 94 Connecting cables The power cord should be selected according to the following speciﬁcations sheet Appliance Amps Wire Size 5 AWG21 0 75 mm2 1...

Страница 22: ...ot install the outdoor unit near sources of heat steam or ﬂammable gas Do not installthe unit intoo windy or dusty places Do not install the unit where people often pass Select a place where the air discharge and operating sound level will not disturb the neighbours Avoid installing the unit where it will be exposed to direct sunlight other wise use a protection if necessary that should not interf...

Страница 23: ... Install a ﬂexible ﬂange through the hole in the wall to keep the latter intact and clean The hole must slope downwards towards the exterior Note Keep the drain pipe down towards the direction of the wall hole otherwise leakage may occur 9 2 3 Electrical connections Indoor unit 1 Lift the front panel 2 Take oﬀ the cover as indicated in the picture by removing a screw or by breaking the hooks 3 For...

Страница 24: ...ot bend the pipe more than three times at one point When extending the rolled pipe straighten the pipe by unwinding it gently as shown in the picture 9 2 6 Connections to the indoor unit 1 Remove the indoor unit pipe cap check that there is no debris inside 2 Insert the fare nut and create a ﬂange at the extreme end of the connection pipe 3 Tighten the connections by using two wrenches working in ...

Страница 25: ...ghtening procedures described for the indoor unit Note If the tightening torque is not suﬃcient there will probably be some leakage With excessive tightening torque there will also be some leakage as the ﬂange could be damaged 9 2 10 Bleeding Air and humidity left inside the refrigerant circuit can cause compressor malfunction After having connected the indoor and outdoor units bleed the air and h...

Страница 26: ...lay Health assembly control Communication with outdoor unit Louver motor control Indoor fan control Display pc board Indoor control board Voltage sampling Frequency generation Storage of working parameters Emergencyl Switch signal input Remote signal input Fan speed feedback Electric heater control Selection of heat and cool only model Selection of data sheet Selection of Fahrenheit and Centigrade...

Страница 27: ...N Blue P3 S Black P1 ACL Brown P00 P01 P5 1 P8 VAL Electric reactor PC monitor P10 3 W P10 2 V COMP Blue White Red To indoor unit Expansion valve Suction Temp sensor Out door coil T e mp sensor Outdoor ambient Temp senso r COMP top Temp protection Exhaust Temp sensor CN12 ORQ P13 L P 14 L P10 1 U P9 CN12 2 P11 1 P11 2 HEAT wu v CN12 1 DC fan motor feedback C N L H CN410 OUTFAN DRM3 DRM2 DRM1 DRM C...

Страница 28: ... monitor P10 1 U P10 2 V COMP Red White Blue To indoor unit Expansion valve Suction Temp sensor Out door coil Temp sensor Outdoor ambient Temp senso r COMP top Temp protection Exhaust Temp sensor CN12 ORQ P13 L P14 L P10 3 W P9 DCFAN CN11 HEAT DRM1 DRM COM DRM2 DRM3 CN13 U603 IPM Q403 IGBT DN401 rectiﬁer D412 Fast recovery diode Indoor unit outdoor unit Power supply compressor Indoor unit PCB Outd...

Страница 29: ...and Indoor pipe coil temperature sensor IPT damage short or broken Solution check the resistance of the sensor R 25 5 kΩ if short or broken please replace it 3 The PCB fail Solution Replace the indoor main PCB 10 5 2 Display E6 Reasons 1 The indoor motor connection terminal loose or not plugged in Solution Check the connecterof indoor motor and slot CN3 and CN4 if loose or not plugged in please co...

Страница 30: ...f sensor and slot if loose or not plugged in please connect again 2 Outdoor pipe temp sensor and outdoor temp sensor damage short or broken Solution Check and replace the sensor 3 Outdoor PCB damage Solu on Check and replace the outdoor PCB 10 5 4 Display E8 Reasons 1 Outdoor discharge pipe temp sensor connection terminal loose or not plugged in Solution Check the connecter of sensor and slot if l...

Страница 31: ...is 0 please replace indoor main PCB 2 If the 1 N which connect to indoor unit voltage is normal measure the voltage between the outdoor terminal 1 and N If the voltage change occurs between 0 24V change pulse voltage please replace indoor PCB 3 If the 1 N which connect to indoor unit voltage is normal measure the voltage between the outdoor terminal 1 and N If the voltage change occurs between 0 1...

Страница 32: ...oltage is less than 50V approximately please replace outdoor PCB 10 5 6 Display EA Reason Current sensor fault Solution 1 Check for refrigerant leakage to ﬁnd the leakage point and recharge the refrigerant 2 Current sampling circuit broken on the outdoor PCB and replace outdoor PCB Communication circuit 1 N L Any of 2 pins should be no short circuit Any of 2 pins should be no short circuit Any of ...

Страница 33: ...is too high 4 Check the outdoor ventilation and if there is any obstruction that aﬀects the normal radiating of the air conditioner and installation again 5 If the above inspections are normal but the fault remains unsolved please replace the outdoor PCB Re energize and check the protection code on display Firstly display P9 a Check the Compressor U V W connection if is correctness or loose please...

Страница 34: ... locating the cause of a malfunction when the compressor does not start up and a DC overcurrent indication error occurs Clean indoor or outdoor heat exchange Clean indoor heat exchange and outdoor heat exchange Check the refrigerant amount Check the installation condition Installation again P9 Use the remote operates the air conditioner Does compressor start up No Does the wire connects right No C...

Страница 35: ...d wire on PWB Replace P WB Cooling mode Check compressor Modify compressor terminal marking Replace PWB Does compressor rotates Replace compressor Check indoor exchange sensor and discharge sensor Modify or replace the sensor Check outdoor exchange sensor and discharge sensor Modify or replace the sensor Check indoor heat exchange Check outdoor heat exchange Clean indoor heat exchange Clean outdoo...

Страница 36: ...nk Check terminal L N voltage Yes OK No OK Check the rectiﬁer bridge fast recovery diode FRD and IGBT Solve as E0 Check wire connected and replace indoor PCB Normal Abnormal Replace PFC board or outdoor PCB assembly Test the DC voltage between DC and DC Damage Normal If the voltage is approx 300V If the voltage is approx zero Replace power supply board or outdoor PCB assembly Replace PFC board or ...

Страница 37: ...0 6 0 869 0 728 12 53 6 24 984 4 152 33 91 4 3 697 2 101 78 172 4 0 843 0 710 11 51 8 23 795 4 117 34 93 2 3 563 2 057 79 174 2 0 819 0 692 10 50 22 671 4 082 35 95 3 435 2 012 80 176 0 795 0 675 9 48 2 21 606 4 045 36 96 8 3 313 1 969 81 177 8 0 773 0 658 8 46 4 20 598 4 008 37 98 6 3 195 1 926 82 179 6 0 751 0 641 7 44 6 19 644 3 969 38 100 4 3 082 1 883 83 181 4 0 729 0 625 6 42 8 18 732 3 930 ...

Страница 38: ...8 161 6 182 1 205 34 93 2 12 72 13 6 14 54 88 190 4 1 861 1 922 1 983 19 66 2 153 1 172 3 193 7 35 95 12 21 13 05 13 93 89 192 2 1 802 1 862 1 923 18 64 4 145 163 1 183 2 36 96 8 11 72 12 52 13 36 90 194 1 746 1 805 1 865 17 62 6 137 5 154 4 173 2 37 98 6 11 26 12 01 12 81 91 195 8 1 692 1 75 1 809 16 60 8 130 3 146 2 163 9 38 100 4 10 82 11 53 12 29 92 197 6 1 639 1 697 1 755 15 59 123 6 138 5 15...

Страница 39: ... 8233 0 8641 10 50 36 04 39 39 43 01 64 147 2 4 101 4 288 4 479 118 244 4 0 7623 0 8012 0 8413 11 51 8 34 42 37 59 41 65 149 3 961 4 139 4 32 119 246 2 0 7415 0 7798 0 8193 12 53 6 32 89 35 87 39 1 66 150 8 3 827 3 995 4 167 120 248 13 55 4 31 43 34 25 37 29 67 152 6 3 698 3 858 4 021 121 249 8 0 702 0 7386 0 7773 14 57 2 30 04 32 71 35 58 68 154 4 122 251 6 0 6631 0 7195 0 7572 15 59 29 72 31 24 ...

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