Page 1
SYSTEM AIR CONDITIONER Mini 4 WAY CASSETTE SERIES INDOOR UNIT OUTDOOR UNIT Model : AC026NNNDKH AC026MXADKH AC035NNNDKH AC035MXADKH AC052NNNDKH AC052MXADKH AC060MXADKH AC060NNNDKH AC071MXADKH AC071NNNDKH AIR CONDITIONER CONTENTS 1. Precautions AC026NNNDKH AC035NNNDKH 2. Product Specifications AC052NNNDKH AC060NNNDKH AC071NNNDKH 3. Disassembly and Reassembly 4.
4-3-4 Communication error after finishing Tracking...............4-19 4-3-5 Indoor unit float sensor error ......................4-20 4-3-6 EEPROM circuit failure ........................4-21 4-3-7 Outdoor unit is not powered on – Initial diagnosis ............4-22 4-4 Troubleshooting by symptoms ........................4-24 4-4-1 Communication error ........................4-24 Samsung Electronics...
Page 3
6. Wiring Diagram ................... 6-1 6-1 Indoor Unit ................................6-1 6-2 Outdoor Unit ............................... 6-2 7. Preference Sheet ..................7-1 7-1 Index of Model Name ............................7-1 7-2 Refrigerating Cycle Diagram ........................7-3 7-3 Pressure Graph ..............................7-4 Samsung Electronics...
■ Check whether the installation location is at least two meters away from other electronic products such as TV, video, or audio. – Otherwise, the video quality might be degraded or noise might be generated. ■ Do not let end users repair the products themselves. – Unauthorized disassembly might cause electric shock or fire. Samsung Electronics...
– Release the high pressure and low pressure valve caps. – Close the high pressure valve completely using an L-wrench – After about two minutes, close the low pressure valve completely. – Stop running the air conditioner. – Separate the connecting pipe. Samsung Electronics...
With the advanced BLDC inverter technology, it makes a room cool with highly energy saving and arises the efficiency of air conditioner. ■ Long Ambient Operation(In Low Temperature) It can arise the reliability and the capacity of the air conditioner, especially operated in low temperature. ■ Eco-friendly Product(Lead-Free, RoHS, WEEE) ■ Easy installation of ultra-lightweight indoor unit Samsung Electronics...
3-1 Indoor unit ■ AC026NNNDKH, AC035NNNDKH, AC052NNNDKH, AC060NNNDKH, AC071NNNDKH Parts Procedure Remark Panel 1) Pull both hooks and take the grille downward. Two safety clips are mounted to the front grille to prevent it from dropping. 2) Detach the safity clip and take up the grille.
Page 13
Remove the panel from the indoor unit. Blade 1) Remove the hinge-blade and blade. 1) Remove the cover display. Display PBA 2) Remove the cover PBA from the cover display. Samsung Electronics...
Page 14
1) Remove the humidity sensor from the panel. Step motor 1) Unscrew 2 screws on cover motor. (Use +Screw Driver 2) Remove 2 cover motor. 3) Remove the 2 fixed screws and disassemble the step motor. (Use +Screw Driver) Samsung Electronics...
Page 15
Control-Box 1) Disconnect the Connector Wire that is connected to the indoor unit’s PBA 2) Unscrew the 2 fixed screws on both sides of the Control Box, and disassemble the Control Box from the indoor unit.(Use +Screw Driver) Samsung Electronics...
Page 16
2) Push the Bell-Mouth in the direction opposite to where it’s installed on the Control-Box to remove it. Drain Pan 1) Unscrew the screws on the 4 corners of the indoor unit. (Use +Screw Driver) 2) Remove the Drain Pan from the indoor unit. Samsung Electronics...
Page 17
Drain-Hose out from the indoor unit to disassemble the transparent Drain-Hose fixed on the side of the indoor unit. (Use +Screw Driver) 1) Use your hand to remove the temperature Evap. sensor attached to the Evap Pipe along with Temperature the fixing clip. Sensor Samsung Electronics...
Page 18
1) Remove the screws of the Steel Holder Evaps that are used to fix the Heat Exchanger, and then remove it. (Use +Screw Driver) 2) Remove the 2 fixing screws of the Partition Evap at the Heat Exchanger’s In/Out Pipe. (Use +Screw Driver) Samsung Electronics...
Page 19
Parts Procedure Remark 3) Remove the screw of the Cover Pipe that is used to fix the In/Out Pipe. Remove the In/Out Pipe. (Use +Screw Driver) 4) Remove the Heat Exchanger from the indoor unit’s cabinet. Samsung Electronics...
1) loosen 1 pcs screw of cover control,and detach it. 2) loosen 5 pcs screws on both right and left cabniet side edges and to detach the cover-top 3) Loosen 7 screwsfixed to disassemble cabi-front , and detach it. 3-10 Samsung Electronics...
Page 21
Parts Procedure Remark common work 4) loosen 2 screws to disassemble steel-bar. 5) Loosen 2 screws to disassemble the cabi left and detach it. Samsung Electronics 3-11...
Page 22
1) loosen 1 screw as indication and detached the fan. 2) loosen 4 pcs motor screws and disconnect the wire betwwen assy control out and motor. 3) loosen 2 pcs bracket-motor screw and detach it. 3-12 Samsung Electronics...
Page 23
Heat exchanger 1) Release the refrigerant at first 2) Looosen fixing screw on both side. 3) disaessembly the pipes in both inlet and outlet with welding torch. 4) detach the heat exchanger. Samsung Electronics 3-13...
Page 24
2)disassembly the felt comp sound. loosen the 3 bolts at the bottom . When removing the compres- CAUTION sor, Heat Exchanger, and Pipe, purge the Coolant inside the Compressor completely and remove the pipe with a welding flame. 3-14 Samsung Electronics...
Page 25
1) Loosen 1 pcs screw of cover control 2) Loosen 8 pcs screw of the cabi top cover. 3) Loosen 4 pcs screw of the bar steel. 4) Loosen 10 pcs screw of the cabi side front. Samsung Electronics 3-15...
Page 26
Parts Procedure Remark common work Fan& motor 1) Loosen the fan screw according the indi- cation and detach the fab propeller 2)Disconnect the wire between assy control out and motor. 3-16 Samsung Electronics...
Page 27
3) Loosen 4 pcs motor screw. 4) Loosen 2 pcs screw of bracket motor. Assy control out 1)Loosen the screws that connected partition and case control then get the control out. 2) Loosen the screw of the cover termimal Samsung Electronics 3-17...
Page 28
Parts Procedure Remark 3) Loosen 2 screws , disassemble the Coil Harmonic. 4) Loosen the screw of the cover terminal. 3-18 Samsung Electronics...
Page 29
4) Detach the heat exchanger. When removing the compres- CAUTION sor, Heat Exchanger, and Pipe, purge the Coolant inside the Compressor completely and remove the pipe with a welding flame. Compressor 1)Loosen the 3 bolts at the bottom of compres- sor. Samsung Electronics 3-19...
Page 30
1) loosen 1 pcs screw of cover control 2) loosen 8 pcs screw of the cabi top cover. 3) loosen 12 pcs screw of the cabi front 4) loosen 7 pcs screw of the cabi side right. 3-20 Samsung Electronics...
Page 31
Remark 5)loosen 3pcs screw of the cabi side left. Fan & Motor 1) loosen the fan screw according the indication and detach the fab propeller 2)Cut the cable-tie 3)disconnect the wire betwwen assy control out and motor. Samsung Electronics 3-21...
Page 32
4) loosen 4 pcs motor screw. 5) loosen 4 pcs screw of bracket motor assy control out 1) lossen the screw of the cover termimal 2)lossen the screws that connected partition and case control then pull up the control out. 3-22 Samsung Electronics...
Page 33
1) Release the refrigerant at first 2) Looosen fixing screw on both side. 3) disaessembly the pipes in both inlet and outlet with welding torch. 4) detach the heat exchanger. Compressor 1)loosen the 3 bolts at the bottom of compres- sor. Samsung Electronics 3-23...
Remove the batteries from the remote control, and then insert them again. b While holding down the (High Temp) and (Low Temp) buttons simultaneously, insert the batteries into the remote control. c Make sure that you are entered to the mode for setting the options: Samsung Electronics...
Page 35
Set the SEG8 value by pressing the (High Fan) button repeatedly until the value you want to set appears on the remote control display. When you press the (Low Fan) or (High Fan) button, values appear in the SEG8 following order: Samsung Electronics...
Page 36
(Mode) button. Auto and Off appear on the remote control display. 11 Set the SEG14 and SEG15 values: a Set the SEG14 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG14 Samsung Electronics...
Page 37
When you press the (Low Fan) or (High Fan) button, values appear in the SEG20 following order: 5 Press the (Mode) button. Fan and Off appear on the remote control display. Samsung Electronics...
Page 38
Make sure that this command is received by the indoor unit. When it is successfully received, you can hear a short sound from the indoor unit. If the command is not received, press the (Power) button again. Samsung Electronics...
RMC1 0 to 2 RMC2 0 to F RMC address setting mode CAUTION • The main address must be set to a value in the range 0 to 14. If you set other values, communication error will occur. Samsung Electronics...
2 Set the installation options of indoor units, by referring to the following table and by following the steps in Common steps for setting the addresses and options on page 4-1. • The installation options of indoor units are set to like a below table by default. AC026NNNDKH AC035NNNDKH Model...
Page 41
• If you set the Individual control with remote control (SEG20) option to a value other than 0 to 4, it is automatically set to 0 (Indoor 1). • Each model's compensation of the wind-free fan RPM (SEG11) option has to be set by default. • Compensation of the wind-free fan RPM (SEG11) option adjusts 20 rpm per 1 step. Samsung Electronics...
Example: Changing the Buzzer control (SEG17) option of the installation options to 1 disuse. Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Tens position Units position Option mode to Function Page Mode of the option of the option New value change number number Indication Samsung Electronics...
-.Check the indoor PBA -. Check the EEPROM. Miss matching error -. Check the indoor unit operation- between indoor unit operation-off operation-off & outdoor unit's micom and outdoor unit version : On : Blink X : Off 4-10 Samsung Electronics...
Check whether 3 phase is reversed or opened. E425 Heating operation restricted at outdoor temperature over HEATING E440 Theat_high value Cooling operation restricted at outdoor temperature below COOLING E441 Tcool_low value Fan speed error FAN1 ERROR E458 4-12 Samsung Electronics...
Page 46
Smart install is not installed E508 Gas leak detected Check the refrigerant E554 Error due to mismatching capacity of indoor and outdoor unit Check the indoor and outdoor unit capacity E556 Inverter EEPROM Checksum error E590 Inverter Boot Code error E660 Samsung Electronics 4-13...
Operation Off protection of the compressor control error Check the input power Outdoor unit [Inverter] Total current error/PFC over Check the coolant charging status Operation Off protection current error Check the normal operation of outdoor fan control error 4-14 Samsung Electronics...
Page 48
Wired remote Normal operation error COM2 terminal of the indoor unit controller error Wired remote controller COM2 Wired remote Check that Com1, Com2 setting DIP switch is set to Com2 Normal operation option setting error controller error Samsung Electronics 4-15...
In this case, is the resistance 8.300 value out of range in the temperature table on the right? 10.00 12.10 Indoor temperature sensor 14.70 failure (replace) 18.00 Restart the system after replacing the PCB 22.00 28.30 33.90 42.30 4-16 Samsung Electronics...
In this case, is the resistance 8.300 value out of range in the temperature table on the right? 10.00 12.10 Failure of the indoor heat 14.70 exchanger temperature sensor (replace) 18.00 Restart the system after replacing the PCB 22.00 28.30 33.90 42.30 Samsung Electronics 4-17...
PCB? Connect the connector to PCB and restart the unit Is there foreign substance stuck in the motor fan? Remove the foreign substance and restart the unit Replace the PCB and restart the unit 4-18 Samsung Electronics...
PCB and replace the PCB Reconnect the cable connecting the outdoor unit to the indoor unit and restart the unit. If the communication still doesn’t work, replace the indoor unit PCB. Good +0.7V -0.7V Samsung Electronics 4-19...
AC 220V? Is the water level in drain pan decreasing? Replace the drain pump Replace the indoor unit PCB Normal operation • Float sensor error is cleared only Replace the drain pump when the indoor power is reset 4-20 Samsung Electronics...
EEPROM component failure, EEPROM circuit parts missing/damaged/soldering failure Are the EEPROM circuit components in good conditions? (missing components / damage / soldering failure) Replace the PCB if the restart fails Restart the unit after replacing the PCB Samsung Electronics 4-21 4-21...
Is the voltage between Replace the inverter PBA the terminal 2 (~) and 4 (~) of the bridge diode 220V? Is the fuse connected? Replace the fuse Replace the inverter PBA Is the resistance value of R001 200Ω? Cont. 4-22 Samsung Electronics...
Page 56
Outdoor unit is not powered on – Initial diagnosis (cont.) Cont. Is the reactor connector Connect the reactor connected correctly? Replace the PBA. Samsung Electronics 4-23...
Is the power is normal? Exchange the PBA of no power unit (check the LED Lamp Exchange the indoor unit PBA. Terminate the service. Is the communication error occurred again? Exchange the outdoor unit PBA. 4-24 Samsung Electronics...
Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #1-#2 in the connector Exchange the PBA of no power unit Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-25...
Page 59
Connect the sensor to PBA connector (4pin) supply power and measure the voltage of #1-#2 in the connector Exchange the PBA of no Ourdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-26 Samsung Electronics...
40°C - 5.83kohm Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #5-#6 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-27...
Page 61
40°C - 5.83kohm Connect the sensor to PBA connector(4pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-28 Samsung Electronics...
40°C - 115kohm Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-29...
Page 63
40°C - 115kohm Connect the sensor to PBA connector(4pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-30 Samsung Electronics...
Restart after power off Is the discharge over temperature sensor error Terminate the service appeared again? Download the EEPROM data Is the discharge over temperature sensor error Terminate the service appeared again? Exchange the Outdoor PBA Exchanged the Compressor Samsung Electronics 4-31...
Is the voltage of CN901 #3-#5 and #3-#6 with in Exchange the Outdoor PBA 1Vdc~15Vdc during the operation? PBA problem or Motor problem Change the PBA first and check the operation Exchange the Fan motor 4-32 Samsung Electronics...
Connect the comp wire normally Is the connection of compressor wire is normal? Download the EEPROM data Is the restart error occurred again? Terminate the service Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor Samsung Electronics 4-33...
Connect the comp wire normally Is the connection of compressor wire is normal? (PBA and Compressor) Is the restart error occurred again? Terminate the service Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor 4-34 Samsung Electronics...
Terminate the service occurred again? Correct the sensor position or exchange the Is the position of temperature sensor and sensor sensing value normal? Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor Samsung Electronics 4-35...
Normal range(280Vdc~320Vdc) Is the DC_link sensing voltage(R104 or R004) is normal in Exchange the Outdoor PBA operation mode? Normal range (0.2Vdc~2.8Vdc) Exchange the Outdoor PBA Is the reactor insulation damaged? Exchange the Reactor 4-36 Samsung Electronics...
Check the input power mode? Normal range(280Vdc~320Vdc) Is the DC_link sensing voltage(R104 or R004) is normal in Exchange the Outdoor PBA operation mode? Normal range (0.2Vdc~2.8Vdc) Exchange the Outdoor PBA Is the reactor insulation damaged? Exchange the Reactor Samsung Electronics 4-37...
Correct the sensor position or exchange the Is the position of temperature sensor and the sensing value sensor normal? Is the connection cable for the compressor and Correct the cable connection power terminal normal? Exchange the Outdoor PBA 4-38 Samsung Electronics...
3) Is there no short or open around IC451(PF2) or IC451,IC452(PF3)? 2. Troubleshooting procedure Restart after power off. Exchange the Outdoor PBA Is the PFC shunt and IPM shunt resistance value correct? Terminate the service Is the current sensor error appeared again? Exchange the Outdoor PBA Samsung Electronics 4-39...
4) Is the cover assembly in conrol-box normal? 2. Troubleshooting procedure Restart after power off. Fastening the screw Are there screws in PBA-heatsink? (4 screws) Check the fan connection Is the fan operation normal? Change the Fan motor Exchange the Outdoor PBA 4-40 Samsung Electronics...
Terminate the service again? Is the position of temperature sensor and Correct the sensor position or exchange the sensing value normal? sensor Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchange the Outdoor PBA Samsung Electronics 4-41...
3) Did you download or insert EEPROM IC, after changing outdoor PBA? 2. Troubleshooting procedure power off and download EEPROM data (or. Insert the service EEPROM IC) Restart after power off Terminate the service Is the error appeared again? Exchange the Outdoor PBA 4-42 Samsung Electronics...
1) Check the power condition at customer's house (Is there any power noise?) 2) Have been there power failure? 2. Troubleshooting procedure Restart after power off Is the AC line zero cross signal error appeared Terminate the service again? Exchange the Outdoor PBA Samsung Electronics 4-43...
* Heating mode * * Cooling mode * Is the outdoor temperature over 40°C or under Is the outdoor temperature under °C? -30°C? The temperature condition is too poor to operate. Wait until temperature is changed 4-44 Samsung Electronics...
Reset the option code again at indoor unit Is the capacity miss match error appeared Terminate the service again? Download the EEPROM data Terminate the service Is the capacity miss match error appeared again? Exchange the Outdoor PBA Exchange the Indoor PBA Samsung Electronics 4-45...
Is the EEV valve is operation? Change the EEV valve Check the sound of EEV valve after power on. Check the pipe crack. Is the pressure of refrigerant normal? Fill up the refrigerant. Exchange the Indoor PBA Exchange the Outdoor PBA 4-46 Samsung Electronics...
■MDS Function only can be set in wired remote controller or central controller. ■Error Message(Error message will be appeared after 3minutes) -Wired remote controller: “E143” message is pop up. -Display Panel: Operation & filter LED is blinking at the same time,after indoor unit is power off. Samsung Electronics 4-47...
6. Wiring Diagram 6-1 Indoor Unit AC026NNNDKH, AC035NNNDKH, AC052NNNDKH, AC060NNNDKH, AC071NNNDKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
PACK MULTI RAC-Vivace AIR HANDIING UNIT DVM HOME AIR HANDLING UNIT SINGLE HYDRO UNIT MULTI HYDRO UNIT MONO HYDRO UNIT WATER TANK FLAT ※ "/" can be removed from the buyer card if there are not enough digits. STAND Samsung Electronics...
Page 91
8 Languages English ★ Only display the Global 4 way with Korean/ English K separator. Pattern Waffle Stripe Korean Global market use 4 Way Export/ Panel foreign market use ※ Model name for the column/bundle packaging is “~S”. Samsung Electronics...
You can open the valve by turning the need valve counterclockwise using hex wrench, and it is used for vacuum, gas purging, coolant injection, coolant purging, and indoor-outdoor unit connection. ■ ACCUMULATOR Accumulator prevents the flow of liquid-state coolant into the compressor. (Liquid-state coolant flowing into the compressor will overload the compressor.) Samsung Electronics...