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Service manual

28

11. Electronic

function

11.1 Proper symbols and their meaning

T1: Indoor ambient temperature
T2: Indoor evaporator temperature
T3: Outdoor condenser temperature
TS: Setting temperature through the remote controller
I

3sec

: Self-protection amp of compressor, continue three seconds until turns off the compressor.

I

5MIN

: Self-protection amp of compressor, continue five minutes until turns off the compressor.

I

FAN

: Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind.

I

RESTORE

: Amp self-protection return value

TH

DEFROST

: High wind, defrosting temperature difference

TM

DEFROST

: Middle wind, defrosting temperature difference

TL

DEFROST

: Low wind, defrosting temperature difference

TE1: Anti-cold wind, from Fan Off to Breeze temperature
TE2: Anti-cold wind, from Breeze to Setting Fan Speed temperature
TE3: Anti-cold wind, from Setting Fan Speed to Breeze temperature
TE4: Anti-cold wind, from Breeze to Fan Off temperature
TE5: Evaporator low temperature protection entering temperature
TE6: Evaporator low temperature protection restoring temperature
TE7: Evaporator high temperature protection, compressor off temperature
TE8: Evaporator high temperature protection, fan off temperature
TE9: Evaporator high temperature protection, restoring temperature
TE10: Condenser high temperature protection, compressor off temperature
TE11: Condenser high temperature protection, compressor restoring on temperature

11.2 Function

Remote receiving
Testing and forced running
Position set for indoor unit wind vane
LED displaying and alarm
On or off Timer
Protection for the compressor
Current protection
High temperature protection of indoor heat exchanger at heating mode
Auto defrosting and heating recovery at heating mode
Anti cold air at heating mode
Anti frozen at cooling mode

11.3 Protection

11.3.1  3 minutes delay at restart for compressor.
11.3.2  Sensor protection at open circuit and breaking disconnection
11.3.3  The malfunction of correspondence in CMOS chip with EEPROM indication.
When the CMOS chip and EEPROM can’t communicate during the time of using EEPROM to select
parameter, the LED shows information of the malfunction (when use jump to select parameter, it
doesn’t have this function). After the showing, the unit can’t go right to work except turning off.

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Содержание ACP-24CH70AEB

Страница 1: ...ACP 24CH70AEB RoHS Service manual ENG ...

Страница 2: ......

Страница 3: ... for installation 15 8 2 Connecting the cables 15 8 3 Pipe length and the elevation 15 8 4 Air purging of the piping and indoor unit 16 8 5 Pumping down Re installation 17 8 6 Re air purging Re installation 18 8 7 Balance refrigerant of the 2 way 3 way valves 19 8 8 Evacuation 20 8 9 Gas charging 21 9 Pressure table 22 9 1 MSE 21CRN2 22 9 2 MSE 21HRN2 22 9 3 MSE 24CRN2 23 9 4 ACP 24CH70AEB 23 9 5 ...

Страница 4: ... available for heating mode 32 11 9 Auto mode 33 11 10 Force cooling function 33 11 11 Sleep mode 33 11 12 Auto restart function 34 11 13 Turbo mode 34 11 14 PLASMA optional 34 11 15 Anion optional 34 12 Model and Parameters 35 13 Troubleshooting 36 13 1 Display board 36 13 2 Troubleshooting 36 13 3 Detailed malfunction analyse 37 13 4 Malfunction Stat 39 14 Characteristic of temperature sensor 42...

Страница 5: ......

Страница 6: ... deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a windows is left open Moisture may condense and wet or damage furniture Take care to ensure that power cable could not be pulled out or damaged during operation...

Страница 7: ... to cool air for long periods of time Do not sit in the draft This could harm to your health Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth to clean Do not us...

Страница 8: ...e unit will decide the louver direction according to operation mode Two direction air vane The fan is turn to low speed cooling heating The unit will be turn off at the seventh hour Sleep mode auto control The function is usually used in rainy days in springtime or damp areas Independent dehumidification Operation indication Lamps LED The louver can be set at the desired position or swing up and d...

Страница 9: ...he hydrophilic fin can improve the heating efficiency at operation mode Hydrophilic aluminum fin It is only operated in the heating operation mode except defrosting operation Discharge pipe temperature protect Anti rust cabinet Valve protection cover 4 way valve control Made from electrolytic zinc steel sheet and anti rust coated components It protects the valves and prevents water from dripping T...

Страница 10: ...Service manual 5 3 Dimension 3 1 Indoor unit Dimension Mode W H D 21K 1080 330 230 24K 1080 330 230 28K 1080 330 230 ...

Страница 11: ...Service manual 6 3 2 Outdoor unit Dimension Mode W H D L1 L2 L3 21K 845 695 335 560 360 560 24K 845 695 335 560 360 560 28K 845 695 335 560 360 560 ...

Страница 12: ...ndoor fan motor Speed hi mi lo r min 1180 1080 800 1180 1080 800 1200 1120 1080 1000 Indoor air flow Hi Mi Lo m3 h 800 730 600 800 730 600 1080 1020 960 880 Indoor noise level Hi Mi Lo dB A 44 5 44 5 45 42 39 Model YDK53 6C YDK53 6C YDK53 6D Brand Dayang Dayang Welling Input W 135 135 140 Capacitor uF 3μF 450V 3μF 450V Outdoor fan motor Speed r min 800 800 800 Outdoor air flow m3 h 1900 1900 2500 ...

Страница 13: ... fan motor Speed hi mi lo r min 1200 1120 1080 1000 1250 1180 1110 1050 1250 1180 1110 1050 Indoor air flow Hi Mi Lo m3 h 1080 1020 960 880 1150 1080 1020 960 1150 1080 1020 960 Indoor noise level Hi Mi Lo dB A 45 42 39 47 44 41 47 44 41 Model YDK53 6D YDK100 6C YDK100 6C Brand Welling Welling Welling Input W 140 169 169 Capacitor uF 5 5 Outdoor fan motor Speed r min 800 800 800 Outdoor air flow m...

Страница 14: ...Service manual 9 5 Refrigerant cycle diagram Cooling only Heat pump mode ...

Страница 15: ...lt from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 6 2 Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage ...

Страница 16: ...2 5VAC1 VSS 1 VDD 2 P25 3 P26 4 P00 5 P01 6 P02 7 P03 8 P04 9 VSS1 10 P05 11 P50 12 P51 13 P52 14 P53 15 AVDD 16 AVREF 17 ANI0 18 ANI1 19 ANI2 20 ANI3 21 ANI4 22 ANI5 23 AVSS 24 P10 25 P11 26 P30 27 P31 28 P32 29 P33 30 P20 31 VDD1 32 P21 33 P22 34 P23 35 P24 36 Vpp IC 37 XT2 38 XT1 39 RESET 40 X2 41 X1 42 IC4 IC_UPD789166 42PIN In_FanM In_FanL In_FanLL In_FanM In_FanL In_FanLL SDA SCL RST BUZ T1_...

Страница 17: ...RL4 12V L1 RL3 L1 RL2 L1 RL1 L1 5VAC1 5VAC2 1 2 3 CN1 TRANS_OUT P23 INTP0 1 P24 INTP1 2 P25 INTP2 3 AVDD 4 P60 AN10 5 P61 AN11 6 P62 AN12 7 P63 AN13 8 AVSS 9 P50 10 IC 19 X2 20 X1 21 VSS 22 VDD 23 P10 24 P11 25 P20 ASCK20 26 P21 TxD20 27 P22 RxD20 28 P51 11 P52 12 P53 13 P00 14 P01 15 P02 16 P03 17 RESET 18 IC2 IC UPD78F9116 LED1 R24 68K 2W D14 4007 IC3 PC817 R22 5 1K R19 2K R16 10K C8 104 5V 相序A ...

Страница 18: ...Service manual 13 7 2 Wiring diagram MSE 21CRN2 MSE 24CRN2 MSE 28CRN2 ...

Страница 19: ...Service manual 14 MSE 21HRN2 ACP 24CH70AEB MSE 28HRN2 ...

Страница 20: ... 2 5 2 5 2 5 8 3 Pipe length and the elevation Pipe size Capacity Btu h GAS LIQUID Standard length m Max Elevation B m Max Elevation B m Additional refrigerant g m 3 8 φ9 52 1 4 φ6 35 5 5 10 30 7k 12K 1 2 φ12 7 1 4 φ6 35 5 5 10 30 1 2 φ12 7 1 4 φ6 35 5 8 15 30 5 8 φ15 88 1 4 φ6 35 5 10 20 30 18K 28K 5 8 φ15 88 3 8 φ9 52 5 10 20 65 5 8 φ15 88 3 8 φ9 52 5 15 30 65 30K 36K 3 4 φ19 05 3 8 φ9 52 5 15 3...

Страница 21: ...heck the flare connection for gas leakage 4 Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute 5 Use torque wrench to tighten the service port cap to a torque of 1 8 kg m 18n m 6 Set the 3 way valve to the opened ...

Страница 22: ... charge hose with the push pin to the gas service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 5 Set the 2 way valve to the close position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 7 Immediately set the 3 way valve to the closed position Do this quickly so that the...

Страница 23: ...r 1 minutes repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicate 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3...

Страница 24: ...the service port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If there is no air in the refrigeration cycle the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If this is the case it will not be necessary to apply a evacuation Discharge ...

Страница 25: ...e has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle ...

Страница 26: ...he specified amount of refrigerant if can be charged with a little at a time approximately 150g each time0 while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the refrigerant to be...

Страница 27: ...m2 32 D 23 W 5 2 5 4 5 6 5 7 5 8 6 0 9 2 MSE 21HRN2 cooling mode outdoor temperature Dry bulb temp pressure indoor conditions 25 30 35 40 45 50 pressure kg cm2 21 D 15 W 4 4 4 5 4 6 4 7 4 8 4 9 pressure kg cm2 24 D 17 W 4 5 4 6 4 7 4 8 5 0 5 1 pressure kg cm2 27 D 19 W 4 8 4 9 5 1 5 1 5 2 5 4 pressure kg cm2 32 D 23 W 5 2 5 4 5 6 5 7 5 8 6 0 heating mode outdoor conditions indoor conditions pressu...

Страница 28: ...door temperature Dry bulb temp pressure indoor conditions 25 30 35 40 45 50 pressure kg cm2 21 D 15 W 4 3 4 4 4 5 4 6 4 7 4 8 pressure kg cm2 24 D 17 W 4 4 4 6 4 7 4 8 5 0 5 1 pressure kg cm2 27 D 19 W 4 6 4 8 5 0 5 1 5 3 5 4 pressure kg cm2 32 D 23 W 5 1 5 3 5 4 5 6 5 7 5 9 heating mode outdoor conditions indoor conditions pressure 12 D 11 W 7 D 6 W 0 D 1 W 4 D 6 W 7 D 9 W 15 D x W 15 pressure kg...

Страница 29: ...or temperature Dry bulb temp pressure indoor conditions 25 30 35 40 45 50 pressure kg cm2 21 D 15 W 4 1 4 2 4 3 4 5 4 6 4 7 pressure kg cm2 24 D 17 W 4 3 4 5 4 6 4 8 4 9 5 1 pressure kg cm2 27 D 19 W 4 6 4 8 5 0 5 1 5 2 5 4 pressure kg cm2 32 D 23 W 5 0 5 2 5 4 5 6 5 7 5 9 heating mode outdoor conditions indoor conditions pressure 12 D 11 W 7 D 6 W 0 D 1 W 4 D 6 W 7 D 9 W 15 D x W 15 pressure kg c...

Страница 30: ... 5 44 5 16 4 81 4 42 4 06 3 79 Sensitive capacity kW 3 80 3 69 3 53 3 34 3 18 3 04 21ºC D 15ºC W Input kW 1 97 2 13 2 31 2 48 2 64 2 81 Total capacity kW 5 83 5 58 5 25 4 93 4 61 4 33 Sensitive capacity kW 3 47 3 37 3 25 3 13 3 04 3 00 24ºC D 17ºC W Input kW 1 97 2 16 2 34 2 52 2 70 2 90 Total capacity kW 6 24 6 12 5 80 5 35 4 87 4 44 Sensitive capacity kW 4 37 4 28 4 12 3 92 3 71 3 55 27ºC D 19ºC...

Страница 31: ... 25 5 81 5 34 4 90 4 57 Sensitive capacity kW 4 61 4 47 4 28 4 06 3 85 3 69 21ºC D 15ºC W Input kW 2 30 2 50 2 71 2 95 3 13 3 35 Total capacity kW 7 04 6 73 6 35 5 94 5 55 5 22 Sensitive capacity kW 4 89 4 75 4 58 4 41 4 28 4 23 24ºC D 17ºC W Input kW 2 30 2 52 2 75 2 98 3 21 3 44 Total capacity kW 7 54 7 40 7 00 6 45 5 87 5 37 Sensitive capacity kW 5 30 5 19 5 12 4 75 4 51 4 30 27ºC D 19ºC W Inpu...

Страница 32: ...5 7 01 6 54 6 10 5 77 Sensitive capacity kW 5 81 5 67 5 48 5 26 5 05 4 89 21ºC D 15ºC W Input kW 2 70 2 90 3 11 3 35 3 53 3 75 Total capacity kW 8 24 7 93 7 55 7 14 6 75 6 42 Sensitive capacity kW 6 09 5 95 5 78 5 61 5 48 5 43 24ºC D 17ºC W Input kW 2 70 2 92 3 15 3 38 3 61 3 84 Total capacity kW 8 74 8 60 8 20 7 65 7 07 6 57 Sensitive capacity kW 6 50 6 39 6 32 5 95 5 71 5 50 27ºC D 19ºC W Input ...

Страница 33: ...perature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restoring temperature TE10 Condenser high temperature protection compressor off temperature TE11 Condenser high temperature protection compressor restoring on temperature 11 2 Functi...

Страница 34: ...tion of outdoor unit mostly contains the protection of exhausting temperature the protection of exhausting press etc when any of the protection occur the outdoor unit exports a signal to indoor unit The action of indoor unit when the indoor unit infers a high tension signal from outdoor exceeding 3 seconds the whole unit turns off come to checking condition the indoor unit shows the information of...

Страница 35: ... condition of this protection Under the protection the outdoor fan keeps run 11 6 Dehumidifying mode 11 6 1 The 4 way valve is off in dehumidifying mode 11 6 2 At dehumidifying mode the unit runs In cooling the speed of the indoor fan is low and the speed can t change 11 6 3 At dehumidifying mode the protection is the same as that of cooling mode 11 6 4 At dehumidifying mode the action of step mot...

Страница 36: ...or 4 minutes after starting and then judge temperature Meanwhile other protections are still valid Tc 1 T1 Ts Room temp up Room temp down Tc Compressor and outdoor fan off Compressor and outdoor fan on Ts Tc is the temperature of heating mode The temperature will increase 4 3 2 1 the unit choose one with the jump JT1 JT2 JT1 JT2 OFF ON OFF 1 3 ON 2 4 11 7 4 Indoor Fan actions at heating mode Indoo...

Страница 37: ... exceed 3 minutes Calculate from the end of latest defrost evaporator high temp Protection only closes outdoor fan with the compressor still running Add up to 90 minutes 11 8 2 Attention defrosting end or T3 20 TC2 the clock restart 11 8 3 Ending condition of defrosting If one of following conditions is satisfied end the defrost and turn into heating mode A The defrost time has reached to 10 minut...

Страница 38: ...r cannot start for 15 minutes reselect the operation mode according to the room temp and set temp or reselect when the set temp varies 11 10 Force cooling function 11 10 1Select forced cooling function with the forced cooling button or the switch 11 10 2The compressor is unconditionally turned on after 30 minutes cooling operation the unit turn to force auto mode 11 10 3All protections of remote c...

Страница 39: ...ll be the same after the air conditioner running under economic mode after 2 hours and during the next time the set temp do not change The total time is 7 hours after 7 hours the unit stops 11 12 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings before the power failure when power returns 11 13 Turbo mode In cooling mode when pre...

Страница 40: ... 14A 14A 14A 18A 18A I5MIN 20A 20A 20A 20A 24A 24A IFAN 22A 22A 22A 22A 26A 26A IRESTORE IDEFROST TE1 25 25 25 TE2 32 32 32 TE3 30 30 30 TE4 20 20 20 TE5 2 2 2 2 2 2 TE6 12 12 12 12 12 12 TE7 63 63 63 TE8 57 57 57 TE9 50 50 50 ANGLCOOL 67 67 67 67 67 67 ANGLHEAT 93 93 93 ANGLOFF 130 130 130 130 130 130 THDEFROST TMDEFROST TLDEFROST ...

Страница 41: ... TIMER is set ON OFF OPERATION indicator TIMER indicator TEMPERATURE indicator 5 Signal receptor 13 2 Troubleshooting For models adopting electrical function Failure phenomenon Operation lamp Timer lamp Defrosting lamp Auto lamp Over current protection of the compressor occurs 4 times Indoor room temp sensor is open circuit or short circuit X X X Temp sensor on indoor evaporator is open circuit or...

Страница 42: ...he indoor temp low than 10 C o Yes No Checkthe solenoid coil of reverse valve C heckthe over c urrent protector of c ompressor Replace the mainPCB board Recycle the refrige rant and recharge R eplace the re verse v alve Check the position and wiring of tem p sensor all of the m If wrong the unit w ill result in current prote ction not tem p C heck the soft starter mould Check the soft starter m ou...

Страница 43: ...lace the display board Yes No Replace the display board Yes Yes Does the unit run in Forced Cool m ode Abnormaln oise from the indoor unit Does it happen in Fan Only mode Yes No Does it happ en with auto swing Check the swing motor Yes Check the swing louver Check the fan motor No Check the cross flow fan Replace the bear Does it just happen in the beginning of cooling or heating mode It is becaus...

Страница 44: ... internal while running Compressor failure Replace the compressor if sounds coming from inner of the compressor Copper tubing Remove the cabinet and carefully rearrange tubing not to contact cabinet compressor Display board or indoor PCB failure Replace the display board If it is still false replace the PCB Battery failure Check the voltage of battery Replace batteries if the voltage is lower than...

Страница 45: ...oard and replace the board if not within 10 of manufacturer s rating Replace the motor if the speed is not within 10 of manufacturer s rating but not because of the capacitor For electrical function 2 3 models Check the fan capacitor in indoor electric box for some models the capacitor is on main PCB and replace the capacitor or main PCB if not within 10 of manufacturer s rating Replace the motor ...

Страница 46: ...ng mode will not perform Replace the reverse valve after checking the reason Water drainage failure Check the drainage pipe and repair if failure The indoor unit is incorrect installed Correct the installation if not correct Drainage pipe blocked Correct it The humidity in room is too high It s normal if the humidity in the room is over 85 Wiring failure Check wiring Correct if wrong wiring or loo...

Страница 47: ...39 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 ...

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