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Domestic air conditioner

HSU-09/12RS03/R2(SDB)

Service Diagnosis

7.4.8 Communication error between the indoor and outdoor units

Indoor display E7

Outdoor

display

LED1 flash 15 times

Method of

The date received from the another unit in indoor unit-outdoor unit signal transmission is

Malfunction

checked whether is normal

Detection

Malfunction

When the date sent from the another unit cannot be received normally,or when the content

Decision

of the data is abnormal

Conditions

Supposed

indoor unit- outdoor unit signal transmission error due to wiring error

Causes

Faulty PCB

Troubleshooting * Caution

Be sure to turn off power switch before connect or disconnect connector,

or else parts damage may be occurred.

Restart the a/c and it

becomes normally.

If starting up normally, but

malfunction occurs again

after a while

Check whether the linking cable

between the indoor and outdoor

is well connected or whether its

core wires are well insulated.

Yes

The outdoor mainboard needs

dehumidification.

The outdoor mainboard

needs dedust.

1. Reconnect the linking cable;

2. Replace the linking cable with

new one.

Содержание HSU-09RS03/R2(SDB)

Страница 1: ...general public It does not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or...

Страница 2: ...4 9 6 9 7 9 8 9 9 5 3 26 5 4 20 5 2 70 Removal of Filter and Blade Removal of Front Panel Main function and control specification of outdoor unit HSU 09 12RS03 R2 SDB 77 Main function and control specification of indoor unit 7 Service Diagnosis Removal of Drain Pan 76 9 5 Removal of Display Assembly Function of Main thermistor ...

Страница 3: ...f Coding Rules of Unit Model 98 89 87 86 82 85 9 10 9 12 Removal of Fan and Fan motor 9 11 9 13 9 14 HSU 09 12RS03 R2 SDB Removal of Outdoor Panel Removal of Fan Motor Bracket and Partition Removal of Compressor and Heat Exchanger ...

Страница 4: ...re disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharging refrigerant ga...

Страница 5: ...lder in an enclosed room can cause oxygen deficiency 1 1 2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipme...

Страница 6: ...or fire Do not damage or modify the power cable Damaged or modified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do not mix air or gas other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equ...

Страница 7: ...xtension cable or share the same power outlet with other electrical appliances since it can cause an electrical shock excessive heat generation or fire Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If ...

Страница 8: ... Corroded installation platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 M ohm or higher Faulty insulation can cause an electrical shock Be sure to check the d...

Страница 9: ...a more comfortable level when you set the sleep mode during night sleep Y Y O T U A I H D E M O L d e e p s n a f e h t t c e l S g n i t t e s n a F 4 Entire auto mode When air con is in auto mode it decides the running mode according to temperature difference between setting temperature and indoor temperature Y ESF filter Trap harmful dust and remove unpleasant odors effectively Y Y g n i t a e ...

Страница 10: ... 2 10 10 10 10 5 1 5 1 0 2 0 2 390X888X335 2838 774 5160 14300 2050 22150 12000 2350 15000 4 2 0 9 6 5 3 5 0 7 4 4 3010 602 3784 3612 774 5590 4 22 1 6 9 52 9 52 298x800X243 390X888X335 298x800X243 12 5 14 5 37 25 23 36 24 22 47 46 HSU 09 12RS03 R2 SDB HSU 09RS03 R2 SDB HSU 12RS03 R2 SDB 2 7 0 7 4 0 87 86 95 11 7 10 4 9 2 12 7 11 4 10 2 11 7 10 4 9 2 12 7 11 4 10 2 3 Specifications 98 L SL ...

Страница 11: ... 3 33 3 33 3 36 5 33 5 36 5 33 5 47 783X255 643X 714X930X340 783X255 643X 714X930X340 830 920 3 7 4 2 47 8 0 52 52 57 57 48 48 58 58 900 5 HSU 09 12RS03 R2 SDB SNB130FGYM2 SNB130FGYM2 HSU 09RS03 R2 SDB HSU 12RS03 R2 SDB 1 15 900 2 6 3 2 520 630 8 0 8 FV50S FV50S ...

Страница 12: ...unication line between the indoor and outdoor 5 CN1 connector for ambient temp sensor and piping temp sensor 6 CH1 connector for power L wire 7 CON12 connector for L in terminal block 8 CON2 connector for N in terminal block 8 CN32 connector for display board 9 CON6 CON8 connector for ions generator Note Other designations PCB 1 INdoor Control PCB 1 CN48 Connector for Forced operation ON OFF switc...

Страница 13: ...oard and the module board 9 CN26ǃCN24 Connector to P and N of the module board 10 CN4 Connector for communicate between indoor and outdoor unit 11 CN16 Connector for electric expansion valves 12 CN9ǃCN8 Connector to L and N of the module board PCB 2 module PCB CN10 Connector for the DC power 5V and 15V form the control PCB CN11 Connector for communicate between the control board and the module boa...

Страница 14: ...HSU 09 12RS03 R2 SDB Connector Wring Diagram Domestic Air Conditioner 11 PCB 1 CN2 CN1 CN3 CN26 CN24 CN4 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN10 CN9 CN8 CN16 ...

Страница 15: ...12 Domestic air conditioner HSU 09 12RS03 R2 SDB Connector Wring Diagram PCB 2 CN6 CN7 CN11 CN10 CN5 CN1 ...

Страница 16: ...Adjusting function 5 1 1 1 Temperature adjusting of different levels DASH operation conditions under different modes 5 1 1 2 Select the wind volume when it is set automatic When the wind volume is automatic it can be switched between strong medium and weak according to the temperature adjusting levels Wind volume under the automatic wind volume mode Temperature adjusting levels A B C D E F G H I H...

Страница 17: ...tarts or the frost removing ends and the compressor starts again in order to avoid cold wind warm boot wind volume control should be done Heat exchange temperature THHOT3喈37ć THHOT2喈35ć喉 THHOT1喈25ć喉 THHOTR喈23ć 4 minutes Stop weak setting weak stop To control the indoor fan motor as shown in the table above according to the heat exchange temperature The fan motor stops when the heat exchange temper...

Страница 18: ... Automatic running When the running mode is turned to automation after starting the system the system will first determine the running mode according to the current room temperature and then will run according to the determined mode Tr in the following selection conditions means room temperature Ts means setting temperature Tp means temperature of indoor coil pipe Tr 23 Choose Cooling Mode ć Tr 23...

Страница 19: ...changes to weak Under the Silent cooling mode the wind volume is SSLO There is no silent mode for moisture removing and wind sending 5 1 3 3 Air cleaning If the fan motor starts working after receiving the remote control order the aion generator starts working and sends out ions The ion generator stops as the fan motor stops When the ion generator is OFF and the air cleaning function is on the fan...

Страница 20: ... after another 1 hour it will decrease the about 2 again and after 3 hours it will increase about 1 and after other 3 hours it will cease ć 5 1 3 6 Trial running The indicated frequency for trial running is 58Hz wind volume is strong The trial running will last for 30 minutes and then the unit will be powered off The unit will exit the trial running if it receives any remote control signal during ...

Страница 21: ... Judge the position of the human being to have air flow control Follow or Avoid may be set by the remote controller When signals are detected for 10 seconds continuously in any area humans are determined to be in the area and the air conditioner will enter auto control 1 When signals are detected in a certain zone ķ Wind direction following Detect the area where human beings are and adjust the def...

Страница 22: ...eating Temperature set will decrease by one degree 2 When humans are detected in a single area Refrigeration Temperature set will increase by one degree Heating Temperature set remains unchanged 3 When two sensors fail to detect any signal within 20 minutes continuously it will be deemed that no humans are present and the air conditioner will enter power save mode 5 1 3 10 10 degree heating mainta...

Страница 23: ...aintain 60Hz 90Hz for one minute Frequency will be immediately decreased under the condition that outdoor unit air discharge temperature overheating protection is activated or over current of compressor then the compressor will operate towards target frequency This process does not exist in normal operation of unit Heating When completing compressor startup operation it will operate as per frequen...

Страница 24: ...lˈ please see defrosting process for details Time sequence of the defrosting operation is as follows Four way Valve Work Status in Other Modes In heating mode four way valve is on If compressor is off or is switched to non heating mode four way valve ensures that it is off at least 3 minutes after compressor shuts down 5 2 4 Outdoor Defrosting Control Defrosting Mode Entry Conditions The unit will...

Страница 25: ...frosting startup The unit will exit defrosting mode and handle fault in the event of 3 consecutive restart failures On entering defrosting it must guarantee that compressor will operate for a minimum of 2 minutes in defrosting mode before exit Defrosting Exit Condition When one of the following conditions is met defrosting operation will be switched to heating operation 1 Temperature of outdoor he...

Страница 26: ...20s continuously ć ˈair discharge overheat protection will be activated and fault will be reported to indoor unit It will not continue in other conditions 5 2 6 3 Indoor Heat Exchanger Anti freeze Protection Anti freeze during cooling When TC 2ćˈcompressor frequency will drop at a speed of 1HZ 10s When TC starts to riseˈand 4 TC 6ćˈcompressor frequency will remain unchanged When 96 TC frequency wi...

Страница 27: ... indoor rated middle and minimum capacity operation signal outdoor unit will operate as per wind speed and frequency set by EEPROM and all the protection features are effective 5 2 6 6 Fault Display and Treatment In case outdoor unit faults the alarm indicator lamp will blink and blink frequency is 1HZˈ Time interval between blink cycles is 3s Alarm indicator lamp is off when there is no fault 5 3...

Страница 28: ... temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge temperature can be obtained 2 The indoor heat exchanger thermistor is used for preventing freezing During the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation halts 3 The indoor hea...

Страница 29: ...1 72 1 57 16 226 3000 204 7662 185 0545 1 70 1 56 15 212 5973 192 7176 174 4829 1 68 1 54 14 199 8093 181 4531 164 5813 1 66 1 53 13 187 8698 170 9169 155 3033 1 64 1 51 12 176 7176 161 0578 146 6059 1 62 1 49 11 166 2961 151 8284 138 4495 1 60 1 48 10 156 5532 143 1847 130 7973 1 58 1 46 9 147 4409 135 0863 123 6153 1 56 1 44 8 138 9148 127 4956 116 8717 1 53 1 43 7 130 9337 120 3778 110 5374 1 5...

Страница 30: ... 0081 19 2272 0 86 0 85 29 19 8895 19 1104 18 3394 0 89 0 88 30 19 0285 18 2581 17 4974 0 93 0 92 31 18 2094 17 4484 16 6988 0 97 0 95 32 17 4302 16 6792 15 9410 1 00 0 99 33 16 6885 15 9480 15 2217 1 04 1 02 34 15 9825 15 2530 14 5389 1 08 1 06 35 15 3103 14 5920 13 8903 1 12 1 09 36 14 6700 13 9632 13 2743 1 16 1 13 37 14 0599 13 3650 12 6889 1 20 1 16 38 13 4786 12 7957 12 1325 1 23 1 20 39 12 ...

Страница 31: ...2 8237 2 82 2 60 75 3 2993 2 9987 2 7222 2 87 2 64 76 3 1881 2 8946 2 6249 2 92 2 68 77 3 0812 2 7946 2 5316 2 97 2 73 78 2 9785 2 6986 2 4420 3 02 2 77 79 2 8796 2 6063 2 3560 3 07 2 81 80 2 7845 2 5176 2 2735 3 12 2 86 81 2 6931 2 4324 2 1943 3 17 2 90 82 2 6050 2 3505 2 1182 3 22 2 94 83 2 5203 2 2717 2 0451 3 28 2 99 84 2 4388 2 1960 1 9749 3 33 3 03 85 2 3602 2 1231 1 9075 3 38 3 07 86 2 2846...

Страница 32: ...5 30 4 66 120 0 8263 0 7196 0 6258 5 36 4 71 Pipe Sensor R25ć 10K f3 B25ć 50ć 3700Kf3 Temp ć Max Kȍ Normal Kȍ Min Kȍ Tolerance ć 30 165 2170 147 9497 132 3678 1 94 1 75 29 155 5754 139 5600 125 0806 1 93 1 74 28 146 5609 131 7022 118 2434 1 91 1 73 27 138 1285 124 3392 111 8256 1 89 1 71 26 130 2371 117 4366 105 7989 1 87 1 70 25 122 8484 110 9627 100 1367 1 85 1 69 24 115 9272 104 8882 94 8149 1 ...

Страница 33: ... 1358 1 11 1 07 11 19 1149 18 2270 17 3646 1 08 1 05 12 18 2580 17 4331 16 6305 1 06 1 03 13 17 4442 16 6782 15 9315 1 03 1 01 14 16 6711 15 9601 15 2657 1 01 0 99 15 15 9366 15 2770 14 6315 0 98 0 96 16 15 2385 14 6268 14 0271 0 96 0 94 17 14 5748 14 0079 13 4510 0 93 0 92 18 13 9436 13 4185 12 9017 0 91 0 90 19 13 3431 12 8572 12 3778 0 88 0 87 20 12 7718 12 3223 11 8780 0 86 0 85 21 12 2280 11 ...

Страница 34: ...2 8005 2 00 1 89 58 3 0919 2 8922 2 7029 2 04 1 93 59 2 9909 2 7948 2 6092 2 08 1 97 60 2 8936 2 7012 2 5193 2 13 2 01 61 2 8000 2 6112 2 4328 2 17 2 05 62 2 7099 2 5246 2 3498 2 22 2 09 63 2 6232 2 4413 2 2700 2 26 2 13 64 2 5396 2 3611 2 1932 2 31 2 17 65 2 4591 2 2840 2 1195 2 36 2 21 66 2 3815 2 2098 2 0486 2 40 2 25 67 2 3068 2 1383 1 9803 2 45 2 29 68 2 2347 2 0695 1 9147 2 49 2 34 69 2 1652...

Страница 35: ...484 4 29 3 88 104 0 7848 0 7036 0 6303 4 34 3 92 105 0 7641 0 6845 0 6127 4 40 3 97 106 0 7441 0 6661 0 5957 4 46 4 02 107 0 7247 0 6482 0 5792 4 51 4 07 108 0 7059 0 6308 0 5632 4 57 4 12 109 0 6877 0 6140 0 5478 4 63 4 16 110 0 6700 0 5977 0 5328 4 69 4 21 111 0 6528 0 5820 0 5183 4 74 4 26 112 0 6361 0 5667 0 5043 4 80 4 31 113 0 6200 0 5518 0 4907 4 86 4 36 114 0 6043 0 5374 0 4775 4 92 4 41 1...

Страница 36: ...39 6112 1 49 1 40 6 43 5912 40 5800 37 7429 1 47 1 39 5 41 4249 38 6207 35 9739 1 45 1 37 4 39 3792 36 7676 34 2983 1 43 1 35 3 37 4465 35 0144 32 7108 1 41 1 33 2 35 6202 33 3552 31 2062 1 38 1 31 1 33 8936 31 7844 29 7796 1 36 1 29 0 32 2608 30 2968 28 4267 1 34 1 28 1 30 7162 28 8875 27 1431 1 32 1 26 2 29 2545 27 5519 25 9250 1 29 1 24 3 27 8708 26 2858 24 7686 1 27 1 22 4 26 5605 25 0851 23 6...

Страница 37: ...5 5316 5 2712 1 29 1 25 41 5 5914 5 3269 5 0704 1 33 1 29 42 5 3916 5 1308 4 8783 1 37 1 33 43 5 2001 4 9430 4 6944 1 41 1 36 44 5 0163 4 7630 4 5185 1 45 1 40 45 4 8400 4 5905 4 3500 1 49 1 44 46 4 6708 4 4252 4 1887 1 53 1 47 47 4 5083 4 2666 4 0342 1 57 1 51 48 4 3524 4 1145 3 8862 1 61 1 55 49 4 2026 3 9686 3 7443 1 65 1 59 50 4 0588 3 8287 3 6084 1 70 1 62 51 3 9206 3 6943 3 4780 1 74 1 66 52...

Страница 38: ...3 43 3 15 88 1 2226 1 1113 1 0092 3 48 3 19 89 1 1880 1 0789 0 9789 3 53 3 24 90 1 1546 1 0476 0 9497 3 58 3 28 91 1 1223 1 0174 0 9215 3 64 3 33 92 1 0910 0 9882 0 8942 3 69 3 37 93 1 0607 0 9599 0 8679 3 74 3 42 94 1 0314 0 9326 0 8424 3 80 3 46 95 1 0030 0 9061 0 8179 3 85 3 51 96 0 9756 0 8806 0 7941 3 90 3 55 97 0 9490 0 8558 0 7711 3 96 3 60 98 0 9232 0 8319 0 7489 4 01 3 64 99 0 8983 0 8088...

Страница 39: ... 2 50 2 20 3 1825 0899 1597 0431 1396 2333 2 48 2 19 4 1724 6540 1511 6468 1323 7551 2 47 2 17 HSU 09 12RS03 R2 SDB Function and control 115 0 5891 0 5235 0 4648 4 98 4 45 116 0 5743 0 5100 0 4524 5 04 4 50 117 0 5600 0 4968 0 4404 5 10 4 55 118 0 5460 0 4841 0 4288 5 16 4 60 119 0 5325 0 4717 0 4175 5 22 4 65 120 0 5194 0 4597 0 4066 5 28 4 70 Discharging Sensor R80ć 50K f3 25 80ć 4450Kf3 Temp ć ...

Страница 40: ... 92 25 564 4275 511 0760 462 3510 2 09 1 90 26 536 9865 486 9352 441 1516 2 07 1 89 27 511 0105 464 0500 421 0258 2 05 1 87 28 486 4151 442 3499 401 9146 2 03 1 86 29 463 1208 421 7683 383 7626 2 01 1 84 30 441 0535 402 2430 366 5175 1 99 1 83 31 420 1431 383 7151 350 1301 1 97 1 81 32 400 3242 366 1295 334 5542 1 95 1 80 33 381 5350 349 4341 319 7460 1 93 1 78 34 363 7176 333 5801 305 6645 1 90 1...

Страница 41: ...561 67 2703 1 05 1 03 72 70 0770 67 4283 64 8213 1 03 1 01 73 67 3844 64 9115 62 4731 1 00 0 99 74 64 8080 62 5006 60 2211 0 98 0 96 75 62 3423 60 1906 58 0609 0 95 0 94 76 59 9821 57 9770 55 9885 0 92 0 92 77 57 7223 55 8552 53 9998 0 90 0 89 78 55 5583 53 8210 52 0912 0 87 0 87 79 53 4856 51 8706 50 2591 0 85 0 84 80 51 5000 50 0000 48 5000 0 85 0 84 81 49 7063 48 2057 46 7083 0 85 0 85 82 47 98...

Страница 42: ...116 15 9167 14 9020 13 9394 2 23 2 12 117 15 4489 14 4506 13 5047 2 27 2 16 118 14 9968 14 0149 13 0855 2 32 2 19 119 14 5599 13 5942 12 6811 2 36 2 23 120 14 1376 13 1879 12 2909 2 41 2 27 121 13 7294 12 7955 11 9144 2 45 2 31 122 13 3347 12 4165 11 5510 2 50 2 35 123 12 9531 12 0503 11 2003 2 54 2 39 124 12 5840 11 6965 10 8617 2 58 2 43 125 12 2270 11 3545 10 5348 2 63 2 47 126 11 8817 11 0240 ...

Страница 43: ...40 HSU 09 12RS03 R2 SDB 6 System Configuration 6 1 System Configuration 6 2 Instruction ...

Страница 44: ...OMY 1 iFP button This function is unavailable on some models 2 11 12 13 14 15 16 17 17 FOLLOW EVADE button 8 Operation mode display 10 Signal sending display 12 FAN SPEED display Swing up down display Left right air flow display Used to select fan speed LOW MED HI AUTO Induce the movement of the Detect the location where human body so as to control the airflow energy saving the human body is adjus...

Страница 45: ...0W and so forth This function unavailable on this models Inner side of the controller 26 SWING UP DOWN 27 SWING LEFT RIGHT button 22 POWER SOFT button 21 LIGHT button 20 INQUIRE button 19 RESET button If pressed the other buttons 24 HEALTH AIRFLOW sharp pointed article to press this button to reset Used to confirm timer and will be disabled Press it once again lock will be cancelled select A witho...

Страница 46: ... DRY ƽ SMART Control temperature SMART SMART stops or COOL HEAT and DRY Operation SMART Unit start 1 Select operation mode 2 Press COOL button is Press HEAT button is displayed on the remote Press DRY button is displayed on the remote SMART AM SMART AM Operation This function is unavailable on One key can give you a comfortable some models room and is displayed on the display board unit will run i...

Страница 47: ... water might occur at air outlet if all vertical louvers are adjusted to left or right It is advisable not to keep horizontal flap at downward position for a long time in COOLor DRY mode SWING Operation SMART 1 2 AM Up and down air flow direction Left and right air flow direction For each press of button air flow direction on remote controller displays as follows according to different operation m...

Страница 48: ...ot of anion effectively balance bacteria and speed up the dust clean the air in the room button For each press is displayed Air conditioner starts health anion function operation Press HEALTH button for twice press When indoor fan motor is running it has healthy process function It s available under any mode When the fan in the indoor unit does not work the health lamp lights up but the anion gene...

Страница 49: ...d SMART 1 TIMER ON Remote controller TIMER ON Select your desired Remote controller TIMER OFF Time setting 2 Every time the button is pressed decreases 1 min if kept depressed it will increase 3 Confirming your setting After setting correct time press CONFIRM button press CONFIRM button to confirm ON or OFF on the OFF remote controller stops flashing TIMER ON Remote controller Remote controller OF...

Страница 50: ...g two sounds HSU 09 12RS03 R2 SDB Introduction Before going to bed you can simply press the SLEEP button and unit will operate in SLEEP mode and bring Comfortable SLEEP you a sound sleep Press SLEEP Operation Mode 1 hours after SLEEP mode O C SLEEP operation starts SLEEP operation stops 1 hr Rises 1O C Rises 1O C Unit stop In COOL DRY mode 1 hr 1 hours after SLEEP mode starts temp will become 2O C...

Страница 51: ... body is Automatic adjusting with the environmental temperature running with power saving Operation Press iFP button is displayed on the remote controller iFP mode When several people are located at different positions or one person is moving in different areas no matter whether the wind is blowing or not the wind will automatically swing and blow to multi areas the wind direction adjustment will ...

Страница 52: ...y mode Room temperature Operation mode Designated temperature Timer mode Air flow ABOVE 23O C BELOW 23 C COOLING HEAT 23 O C 26 O C NO NO AUTOMATIC AUTOMATIC cooling only uint Room Operation mode Designated temperature Timer mode Air flow BELOW 23 O C FAN 26 O C NO AUTOMATIC Test operation switch is the same as Use this operation only when the remote controller is defective or lost When the emerge...

Страница 53: ...ON Do not start or stop the operation by disconnecting the Do not channel the air flow directly at people especially at infants or the aged Do not try to repair or reconstruct by yourself Do not use for the purpose of storage of food art work precise equipment breeding or cultivation CAUTION Take fresh air occasionally especially when gas appliance is running at the same time PROHIBITION STRICT EN...

Страница 54: ...s 3 If the fuse of indoor unit on PC board is it with the type of T 3 15A 250V outdoor broken change it with the type of T 25A 250V Do not obstruct or cover the ventilation conditoner Do not put fingers inlet outlet and swing louver Do not allow children to play with the air conditioner case should children be allowed to sit on the outdoor unit The refrigerating circuit is leak proof 1 Applicable ...

Страница 55: ...age is supplied Check the indoor PCB Check to make sure that the indoor PCB is broken Operation sometimes stops Check the power supply A power failure of 2 to 10 cycles can stop air conditioner operation Equipment operates but does not cool or does not heat only for heat pump Check for faulty operation of the electronic expansion valve Set the units to cooling operation and compare the temperature...

Страница 56: ...0 6 r o r r e M O R P E E r o o d n I 4 E 5 5 n o i t c n u f l a m r o t o m n a f r o o d n I 4 1 E Outdoor Malfunction 0 6 r o r r e M O R P E E r o o d t u O 1 2 1 F F1 2 6 5 M P I f o n o i t c e t o r p e h T F3 4 Communication fault between the IPM and outdoor PCB 56 F19 6 Power voltage is too high or low 63 F4 8 Overheat protection for exhaust temperature 58 F21 10 Frost removing temperatu...

Страница 57: ...alues vary slightly in some models Supposed Ƶ Faulty connector connection Causes Ƶ Faulty thermistor Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Thermistor resistance check method Remove the connector of the thermistor on the PCB and measure the resistance of thermistor using tester The relationsh...

Страница 58: ...sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Check whether Terminal on the indoor outdoor mainboard is well inserted Is it normal Yes NO Reinsert the terminals Electrify the machine again and turn it on in the Cool state with the remote controller check whether motor can run Yes Measure the voltage between 6 and 4 of the terminal about 0...

Страница 59: ...M and outdoor PCB don t communicate or Related Abnormality outdoor display LED1 flash 4 times Indoor Display F3 Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction Ƶ The outdoor PCB broken leads to communication fault Decision Ƶ The IPM module broken leads to communication fault Conditions Supposed Ƶ The outdoor PCB is broken Causes ...

Страница 60: ...utdoor display LED1 flash 12 times Method of This type of error is detected by checking the thermistor input voltage to the microcomputer Malfunction A thermistor error is detected by checking the temperature NO NO YES Are they good 1 Pull out and reinsert the terminals 2 Replace connected wire 1 Check whether Terminal CN23 and CN22 on the outdoor mainboard CN10 and CN11 on IPM module 2 Check whet...

Страница 61: ...Exhaust Temperature Indoor display F4 outdoor display LED1 flash 8 times Method of the exhaust temperature control is checked with the temperature being detected Malfunction by the exhaust pipe thermistor Detection Malfunction when the compressor discharge temperature is above 117ć Decision Conditions Supposed Ƶ Electronic expansion valve defective Causes Ƶ Faulty thermistor Ƶ Faulty PCB Troublesh...

Страница 62: ...re sensor of the compressor on the outdoor unit Measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit YES Malfunctions occur after running for some time even though the asured temperature is below 117ć Exhaust temperature sensor is broken and needs be replaced Pull out the exhaust sensor and measure its resistance at standard temperatures according to the ...

Страница 63: ...n Malfunction when the Data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Ƶ Faulty EEPROM data Causes Ƶ Faulty EEPROM Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES NO Check whether LED1 on the outdoor unit blinks 1 times The outdoor mainboard is damaged Replace it with a ne...

Страница 64: ...bnormal Conditions Supposed Ƶ indoor unit outdoor unit signal transmission error due to wiring error Causes Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred NO A Restart the a c and it becomes normally If starting up normally but malfunction occurs again after a while Check whether the linking cable be...

Страница 65: ...er measure the AC voltage between positions 1 and 3 on the terminal of outdoor unit with a multimeter If 230VAC is available but 310DC not the power module is damaged replace it with a new one Test the outdoor power supply 230VAC and 310VDC with a multimeter The outdoor mainboard is damaged replace it with a new one The indoor mainboard is damaged replace it with a new one If the value varies betw...

Страница 66: ...oltage detection circuit to the microcomputer Decision Conditions Supposed Ƶ Supply voltage not as specified Causes Ƶ the IPM module is broken Ƶ the outdoor PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred About how to check the IPM module please refer to IPM protection fault This question may be caus...

Страница 67: ...pressor Causes Ƶ Faulty compressor Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Malfunction unso YES YES NO 1 The wiring of compressor is incorrect or the connection is poor 2 The compressor is damaged IPM Module is damaged and needs replacing At frist the compressor start up soon the compressor stopped...

Страница 68: ...d Ƶ Faulty IPM Module Causes Ƶ Faulty compressor Ƶ Faulty power supply Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Yes IPM Module is damaged and needs replacing The compressor is started normally but malfunctions are reported after it has run for some time Check the power supply If the voltage is too low or too hig...

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