FREE JOINT MULTI AIR CONDITIONER SERVICE INDOOR UNIT OUTDOOR UNIT MH026FNCA MH035FNCA MH052FNCA MH026FECA MH035FECA MH052FECA MH050FXCA2A MH080FXCA4A Manual AIR CONDITIONER THE FEATURE OF PRODUCT ■ Multi Inverter(Free Joint Multi) Series – Variable Indoor Unit Combination(Free Joint Multi) – Multi Inverter(Free Joint Multi) Series delivers comfort to 2~4 rooms with a Single Outdoor Unit – Smart & Low noise outdoor units in any condition.
Contents 1. Precautions .......................................................................................................................................... 1-1 1-1 Installing the air conditioner .......................................................................................................... 1-1 1-2 Power supply and circuit breaker .............................................................................................. 1-1 1-3 During operation .....................................
Contents 9. Troubleshooting .............................................................................................................................. 9-1 9-1 Items to be checked first ................................................................................................................ 9-1 9-2 Checking and Testing operations ............................................................................................... 9-2 9-3 Fault Diagnosis by Symptom ...................................
1. Precautions 1-1 Installing the air conditioner ● Users should not install the air conditioner by themselves. Ask the dealer or authorized company to install the air conditioner except the window-type air conditioner in U.S.A and Canada. ● If you don’t install the air conditioner properly, it may cause a fire, a water leakage or an electric shock. ● You must install the air conditioner according to the national wiring regulations and safety regulations. ● Install the indoor unit higher than 8.2ft(2.
1-4 Disposing of the unit ● Before throwing out the air conditioner, remove the batteries from the remote control. ● When you dispose of the air conditioner, consult your dealer. If pipes are removed incorrectly, refrigerant may blow out and cause air pollution. When it contacts with your skin, it can cause skin injury. ● The package of the air conditioner should be recycled or disposed of properly for environmental reasons.
2. Product Specifications 2-1 The Feature of Product ■ Multi Inverter(Free Joint Multi) Series delivers comfort to 2~4 rooms with a Single Outdoor Unit. ■ Inverter for High Efficiency Operation. Thanks to inverter control, efficiency of operation of the outdoor unit is enhanced depending on the number of indoor units operated and the temperature setting. When only one indoor unit is used, power is saved, resulting in a smaller electricity bill.
2-2 Product Specifications Model MH026FNCA Item INDOOR UNIT Type Cooling Btu/hr Heating Wall-mounted Wall-mounted 9,000 12,000 10,000 13,000 - - 8.31 9.54 8.56 9.93 32 36 32 36 1,208~230,60 1,208~230,60 30 35 |/h Dehumidifying Performance MH035FNCA Cooling Air Volume m3/min Heating Cooling Noise dB Heating Power ø,V,Hz Power Consumption Cooling W Heating 30 35 Cooling 0.18 0.19 0.18 0.19 mm 825x285x189 825x285x189 inch 32x11x7.4 32x11x7.
Product Specifications(cont.) Model MH052FNCA Item INDOOR UNIT Type Wall-mounted Cooling Btu/hr 19,000 Heating |/h Dehumidifying Performance 18,000 Cooling Air Volume m3/min Cooling dB ø,V,Hz Power Consumption Cooling 40 40 Heating Power 13.21 14.22 Heating Noise - W 1,208~230,60 50 Heating 50 Cooling 0.30 Power Operating Current A 0.30 Heating Outer Dimension mm 1,065x298x128 inch 42x12x8.6 kg 13 Liquid OD(inch)xL(ft) ø1/4x24.6 Gas OD(inch)xL(ft) ø1/2x24.
Product Specifications(cont.) Model MH026FECA Item Cooling Btu/hr Heating Cooling Air Volume m3/min Heating Cooling Noise dB Cooling Operating Current Cooling WxHxD Motor Refrigerant Control Unit 2-4 10,000 13,000 19,000 8.6 9.8 13.6 9.0 10.3 14.2 31 32 39 39 76 76 150 76 76 150 0.35 0.35 0.69 0.35 0.35 0.69 mm 900x199x600 900x199x600 1,100x199x600 inch 35.4x7.8X23.6 38.2x7.1x15.4 1,100x199x600 W A kg 26 26 31 OD(inch)xL(ft) ø1/4x24.6 ø1/4x24.
Product Specifications(cont.) /QFGN /* (: $ +VGO 176&114 70+6 6[RG (TGG ,QKPV /WNVK %CRCEKV[ 2GTHQT OCPEG %QQNKPI *GCVKPI %QQNKPI *GCVKPI 2QYGT 2QYGT %QPUWORVKQP 1RGTCVKPI %WTTGPV 5K\G F$ Ó 8 *\ %QQNKPI *GCVKPI %QQNKPI *GCVKPI (WUG %CRCEKV[ &KOGPUKQP $VW JT O OKP #KT 8QNWOG 0QKUG 2QYGT 1WVFQQT 1PN[ 9Z*Z& 9GKIJV 9 # .
2-3 Accessory and Option Specifications 2-3-1 Indoor Unit Accessories ■ MH✳✳✳FNCA +VGO &GUETKRVKQPU %QFG 0Q 3 6; 4GOCTM &$ $ +PUVCNNCVKQP 2NCVG 2NCVG *CPIGT /* (0%# /* (0%# &$ # /* (0%# 4GOQVG %QPVTQN &$ 3 +PFQQT 7PKV 6+105 190'4 5 +05647% %+10'5 /#07#. &' +05647% . 751 +5647<+10+ 2'4 ¨'5 /#07#. &' +05647 +10 /#07'. & 76+.
Product Specifications Indoor Unit Accessories(cont.) ■ MH✳✳✳FECA Item Descriptions Code-No.
Product Specifications Indoor Unit Accessories(cont.) ■ MH✳✳✳FECA(cont.) Item Descriptions Code-No. Q'TY Cable-tie DB65-10088C 8 Remark Indoor Unit Drain Pipe Holder DB90-02064A 2 ✳ The design and shape can be changed according to the model.
Product Specifications 2-3-2 Outdoor Unit Accessories ■ MH050FXCA2A/MH080FXCA4A +VGO &GUETKRVKQPU %QFG 0Q 3 6; &TCKP 2NWI 1WV &$ # 6TCPUOKVVGT RQYGT ECDNG #UU [ %QPPGEVQT 9KTG &% 2QYGT &$ # 4WDDGT .GI &$ # 1WVFQQT 7PKV 6+105 190'4 5 +05647% %+10'5 /#07#. &' +05647% . 751 +5647<+10+ 2'4 ¨'5 /#07#. &' +05647 +10 /#07'. & 76+.
Product Specifications 2-3-3 Transmitter Unit Accessories Item Descriptions Code-No.
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Alignment and Adjustments ■ MH✳✳✳FECA The error indicated on the LED display of Indoor unit Indicators Concealed Type Abnormal conditions Blue Red Operating Standard Type Power reset Error of temperature sensor in indoor unit(OPEN/SHORT) Error of heat exchanger sensor in indoor unit Error of heat exchanger OUT sensor in indoor unit Error of outlet temperature sensor in indoor unit (OPEN/SHORT): For heat pump models only Displayed on appropriate indoor unit which is operating Displayed on appropria
Alignment and Adjustments ■ MH✳✳✳FECA(cont.) The error indicated on the LED display of Indoor unit Indicators Concealed Type Abnormal conditions Blue Red Operating Standard Type 5. Breakaway of COND MID sensor 6. 2 detection of refrigerant completely leak nd 7. 2nd detection of high temperature COND 8. 2nd detection of high temperature DISCHARGE Displayed on appropriate indoor unit which is operating Displayed on outdoor unit 9. COMP DOWN due to 2nd detection of low pressure switch 10.
Alignment and Adjustments 3-1-2 Outdoor Unit Display EXPLANATION(The error indicated on the PCB display of outdoor unit) REMARK Communication error(indoor unable to receive data) Check electrical connection and setting Outdoor unit communication error (Abnormal data from indoor unit over 60 packet) Check electrical connection and setting Indoor unit room temperature sensor error (Open/Short) Indoor unit heat exchanger in temperature sensor error (Open/Short) Indoor unit heat exchanger out temperatur
Alignment and Adjustments Outdoor Unit(cont.
3-2 Setting Option Setup Method ex) Option No. : Step 1 : Enter the Option Setup mode. 1st Take out the batteries of remote control. 2nd Press the temperature insert the battery again. 3rd Make sure the remocon display shown as button simultaneously and . Step 2 : Enter the Option Setup mode and select your option according to the following procedure. Feature 1 Display Setting Option SEG1. Push the button to set the display panel to . Every time you push the button, the display panel reads .
Alignment and Adjustments Feature Display 6 Change it into the set display of Option SEG5 and SEG6 with the button. 7 Setting Option SEG5. Push the button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly. 8 Setting Option SEG6. Push the button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly. 6,9 7,10 9 Change it into the set display of Option SEG7 and SEG8 8,11 with the button.
Alignment and Adjustments Step 3 : Upon completion of the selection, check you made right selections. Whenever you press the button, the set Option will be displayed. Step 4 : Pressing the ON/OFF button ( ) When pressing the operation ON/OFF key with the direction of remote controller for unit, the sound "Ding" is heard and the OPERATION LED lamp is flickering at the same time, then the input of option is completed. (If the "ding" sound isn't heard, try again pressing the ON/OFF button.
TECHNICAL BULLETIN Technical Bulletins are produced to provide information not contained in the manuals or to update currently published technical information on the Samsung line of Mini splits This bulletin is on : Option Code Procedure for MH Neo Forte Know this The Option codes shown in the Service manual have been REVISED The correct option code sequence sequence, and recommended procedure is shown below Option codes are required if ALL of the Indicator lights on the Indoor unit are blinking, the PCB h
Alignment and Adjustments ■ Table of the option code MODEL OPTION CODE MH026FNCA 027402-14221A-200001-300000 MH035FNCA 027402-16224d-200001-300000 MH052FNCA 026402-19228F-200001-300000 'ZVGTPCN 5VCVKE 2TGUUWTG OO#S 5VCPFCTF /* ('%# & ( ) /* ('%# ) &(
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4-1 Indoor Unit Stop operation of the air conditioner and remove the power cord before repairing the unit. 4-1-1 MH026FNCA/MH035FNCA/MH052FNCA No Parts 1 Front Grille Procedure Remark 1) Stop the air conditioner operation and shut off the main power. 2) Open the Front Grille by pulling right and left sides of the hook. 3) Loosen 1 of the right screw and detach the Terminal Cover. 4) Detach the thermistor from the Front Grille. 5) Loosen 3 fixing screws of Front Grille.
Disassembly and Reassembly No Parts Procedure Remark 6) Unlock 3 hooks to fix Panel Front and Tray Drain. 7) Unlock 3 hooks to fix Panel Front and Back-Body. 2 Control-In (Main PCB) 1) Take all the connector of PCB upper side out. (Inclusion Power Cord) 2) Detach the outdoor unit connection wirefrom the Terminal Block. 3) Loosen 4 fixing screws of Ass’y Control-In. 3 Tray Drain 1) Pull Tray Drain out from the Back Body.
Disassembly and Reassembly No Parts Procedure 4 Heat Exchanger 1) Loosen 2 fixing earth screws of right side. 2) Detach the Connection Pipe. 3) Detach the Holder Pipe at the rear side. Remark 4) Loosen the 4 fixing screws of right and left side. 5) Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit. 5 4-4 Fan Motor & Cross Fan 1) Loosen the fixing screw. 2) Detach the Fan Motor from the Fan. 3) Detach the Fan From the left Holder Bearing.
Disassembly and Reassembly 4-1-2 MH026FECA/MH035FECA No Parts 1 Motor & Blower Procedure Remark 1) Disassemble the Cabinet Top Motor. - Unscrew 8 screws 2) Disassemble 2 Cover Blower Uppers. - After unscrewing 2 screws - Disassemble the Cover Blower Upper with pushing its hook. 3) Disassemble the Cover Control.
Disassembly and Reassembly No Parts Procedure Remark 4) Disassemble Motor Wires connected to the inside of PCB and connected to the Capacitor. 5) Disassemble the Motor earth wire connected to the Partition. - Unscrew a screw 6) Disassemble the band Motor for fixing the Motor. - Unscrew 2 screws 7) After disassembling the Motor and Blower for the set, disassemble the Blower by use of 3mm wrench.
Disassembly and Reassembly No Parts 2 Drain Pan Procedure Remark 1) Disassemble the Cabinet Top Evap. - Unscrew 11 screws 2) Disassemble the Bracket Outlet Sub that fixes the Drain Pan equipped on the front of the set. - Unscrew 6 screws 3) Disassemble the Drain Cushion from the set.
Disassembly and Reassembly No Parts 3 Evaporator Procedure Remark ✳ The Evaporator should be disassembled after disassembling the Cover Control 1-3) and the Drain Pan 2-1), 2-2), 2-3). 1) Disassemble the Cover Pipe that fixes the high/low pressure Pipe. - Unscrew 2 screws 2) Disassemble the refrigerant temperature sensor, Inlet air temperature sensor, and EEV wire that connected to the inside of PCB. 3) Disassemble the Support Evap. LF that fixes the Evaporator.
Disassembly and Reassembly No Parts Procedure Remark 5) Disassemble the Evaporator form the set. 4 Control In ✳ The Control In should be disassembled after disassembling the Cover Control 1-3). 1) Disassemble all Control Wires connected to the inside of PCB. 2) In case of disassembling the PCB separately, disassemble the PCB from the case with pushing the hook after unscrewing the screw.
Disassembly and Reassembly No Parts Procedure Remark 5) In case of disassembling the Trans Power, unscrew the screw fixing on the Case. ✳ Disassemble if after disassembling the case PCB 4-4). 5 Bracket Outlet 1) Disassemble the Bracket Outlet assembled on the Cabinet.
Disassembly and Reassembly 4-1-3 MH052FECA No Parts Procedure 1 Filter 1) Pull out the Filter as picture 1 or picture 2. Remark 2) If it is necessary, after disassembling 8 indicating screws, detach the Bracket Filter.
Disassembly and Reassembly No Parts Procedure Remark 3) If the Cabinet-Top Motor is assembled on the side of the set, the procedure of disassembling the Filter is just as the above. 2 Blower & Motor 1) After disassembling 13 indicating screws, detach Ass’y Cabinet-Top Motor. 2) After disassembling 3 indicating screws, detach Ass’y Case Blower Upper. _ Press the pothook of the Case Blower and detach Ass’y Case Blower Upper.
Disassembly and Reassembly No Parts Procedure Remark 3) After disassembling 2 indicating screws, detach the Cover Control. 4) Detach the Motor Wire Connected to PCB and Capacitor. 5) After disassembling the indicating screws, detach the wire connected to the Partition. 6) After disassembling 2 indicating screws, detach the Ass’y Band Motor.
Disassembly and Reassembly No Parts Procedure Remark 7) After disassembling the Motor and Blowers, detach the Blowers from the axis of the Motor by 3mm inner hexagon spanner. 3 Drain Pan 1) After disassembling 15 indicating screws, detach Ass’y Cabinet-Top Evap. 2) After disassembling 6 indicating screws, detach the Bracket Outlet. 3) Detach the Drain Pan.
Disassembly and Reassembly No Parts 4 Evaporator Procedure Remark ✳ After finished the procedures above, detach the Evaporator. 1) After disassembling 2 indicating screws, detach Ass'y Cover Pipe. 2) Detach the Sensor from the Control Box.(including 2 Sensors) 3) After disassembling 2 indicating screws, detach Ass'y Support Evap LF. 4) After disassembling 2 indicating screws, detach Ass'y Support Evap RH.
Disassembly and Reassembly No Parts Procedure Remark 5) Detach the Evaporator from the set. 5 Control In ✳ Detach the parts of Control In after disassembling the Cover Control. 1) Detach all the wires connected to the PCB. 2) If only the disassembly of PCB required, press the Pothook and detach the PCB from the set. 3) If only the disassembly of Capacitor is required, detach it from the set.
Disassembly and Reassembly No Parts Procedure Remark 5) Detach the Transformer after disassembling 2 indicating screws. ✳ Work is possible after disassembling the Case PCB. 6 Ass'y Bracket Outlet Samsung Electronics 1) After disassembling 16 indicating screws, detach Ass'y Bracket Outlet.
4-2 Outdoor Unit 4-2-1 MH050FXCA2A No Parts 1 Common Work & Control Out Procedure Remark 1) Loosen the fixing screw and detach the Cover-Control. (Use +Screw Driver.) 2) Detach the Cable-Connector Wire from the Terminal-Block. 3) Loosen the fixing screw of the Ass'y Control Out. (Use +Screw Driver.) 4) Loosen 8 fixing screws and detach the Cabinet Upper. (Use +Screw Driver.) 5) Loosen 2 fixing screws, 5 bolts and detach the Front Cabinet. (Use +Screw Driver.
Disassembly and Reassembly No Parts Procedure Remark 8) Detach the Terminal and detach the Compressor Lead Wire. 2 Fan & Motor 1) Loosen the fixing nut and detach the Fan. (Use +Screw Driver.) 2) Loosen 4 fixing bolts and detach the Motor. (Use +Screw Driver.) 3) Loosen 4 fixing bolts and detach the Bracket Motor. (Use +Screw Driver.
Disassembly and Reassembly No Parts Procedure 3 Heat Exchanger & Compressor 1) Release the refrigerant at first. 2) Disassemble the Inlet and Outlet Pipe by welding. 3) Loosen the fixing screws of the Heat Exchanger. (Use +Screw Driver.) 4) Detach the Heat Exchanger. Remark 5) Loosen 3 nuts of the Compressor. (Use Monkey Spanner.) 6) Detach the Compressor.
Disassembly and Reassembly 4-2-2 MH080FXCA4A No Parts 1 Common Work & Control Out Procedure Remark 1) Loosen 7 fixing screws and detach the Cabinet side RH. (Use +Screw Driver.) 2) Detach the Cable-Connector Wire from the Terminal-Block. 3) Loosen 2 fixing screws of the Ass'y Control Out. (Use +Screw Driver.) 4) Loosen 6 fixing screws and detach the Cabinet Upper. (Use +Screw Driver.) 5) Loosen 2 fixing screws, 7 bolts and detach the Cabinet Front. (Use +Screw Driver.
Disassembly and Reassembly No Parts Procedure Remark 6) Loosen 2 fixing screw and pull up the Control Box. (Use +Screw Driver.) 7) Pull the felt and detach it. 8) Detach the Terminal Cover and detach the comp lead wire.
Disassembly and Reassembly No Parts Procedure 2 Fan & Motor 1) Loosen the fixing nut and detach the Fan. (Use Monkey Spanner.) Remark 2) Loosen 4 fixing bolts and detach the Motor. (Use +Screw Driver.) 3) Loosen 4 fixing bolts and detach the Bracket Motor. (Use +Screw Driver.) 3 Heat Exchanger & Compressor 1) Release the refrigerant at first. 2) Disassemble the Inlet and Outlet Pipe by welding. 3) Loosen the fixing screw of the Heat Exchanger. (Use +Screw Driver.) 4) Detach the Heat Exchanger.
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Exploded Views and Parts List 5-1-2 MH052FNCA 6 7 1 1-2 14 1-1 15 10 12 16 2 11 13 4 2-1 9 2-2 2-3 3-8 3-6 5-1 5 3-4 5-4 3 3-1 3-7 3-2 5-2 5-3 3-5 3-3 8 5-2 5-3 5- Samsung Electronics
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Exploded Views and Parts List 5-1-3 MH026FECA/MH035FECA 1 8 20 2 17 18 19 16 21 13 15 12 11 24 25 23 4 14 3 9 5 22 10 8 6 7 23-5 23-6 23-4 23-1 23-7 23-8 23-3 23-2 5-5 Samsung Electronics
Exploded Views and Parts List ■ Parts List 0Q %QFG 0Q &GUETKRVKQP &$ # #55 ; %#$+0'6 $#5' &$ # 5RGEKHKECVKQP 3 6; 5# 50# #55 ; 5# #55 ; %#$+0'6 5+&' .( #55 ; 5# &$ # #55 ; %#$+0'6 5+&' 4* #55 ; 5# &$ # #55 ; %18'4 2+2' #55 ; 5# &$ # #55 ; %18'4 &4#+0 27/2 #$5 6 5# &$ # %#$+0'6 612 /1614 5)%% / 6 5# &$ ' #55 ; %#$+0'6 612 '8#2 #55 ; 5# &$ # 2.
Exploded Views and Parts List 5-1-4 MH052FECA 28 27 8 2 26 22 21 1 25 20 23 24 17 18 19 16 3 33 4 11 31 5 8 12 13 14 32 30 15 10 9 6 29 30-6 30-1 30-2 30-3 7 34 30-4 30-5 35 5-7 Samsung Electronics
Exploded Views and Parts List ■ Parts List 0Q %QFG 0Q 3 6; 5# 50# &$ # #55 ; %#$+ $#5' #55 ; 5)%% / 6 5# &$ $ %#$+ 5+&' .( 5)%% / 6 5# &$ # #55 ; %#$+ 5+&' 4* #55 ; 5)%% / 6 5# &$ # #55 ; %18'4 2+2' #55 ; 5)%% / 6 5# &$ # #55 ; %18'4 &4#+0 27/2 #55 ; 5# &$ # %#$+ 612 /1614 5)%% / 6 5# &$ % #55 ; %#$+ 612 '8#2 #55 ; 5)%% / 6 5# &$ # 2.
5-2 Outdoor Unit 5-2-1 MH050FXCA2A 8 7 11 17 6 5 4 12 3 2 1 15 9 19 10 18 1-1 5-9 Samsung Electronics
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Exploded Views and Parts List 5-2-2 MH080FXCA4A 11 8 7 17 12 5 6 10 20 4 13 15 2 13-1 9 3 1 14 19 1-1 5-11 18 Samsung Electronics
Exploded Views and Parts List ■ Parts List &GUETKRVKQP 5RGEKHKECVKQP 3 6; 0Q %QFG 0Q &$ # #55ŏ; %#$+ (4106 616#. #55ŏ; 50# &$ % )7#4& (#0 2 22 5% 4 5# &$ % #55ŏ; $#5' 176 616#. #55ŏ; 50# &$ # (#0 241('..
6. Wiring Diagram 6-1 Indoor Unit ■ MH✳✳✳FNCA This Document can not be used without Samsung's authorization.
&J@KKN 2JEP Ġ?KJP *% #" A This Document can not be used without Samsung's authorization.
6-2 Outdoor Unit ■ MH050FXCA2A This Document can not be used without Samsung's authorization.
Wiring Diagram ■ MH080FXCA4A This Document can not be used without Samsung's authorization.
7. Schematic Diagram 7-1 Indoor Unit ■ MH✳✳✳FNCA This Document can not be used without Samsung's authorization.
Schematic Diagram ■ MH✳✳✳FECA This Document can not be used without Samsung's authorization.
8. PCB Diagram 8-1 MAIN PCB(Indoor Unit) ■ MH✳✳✳FNCA The red number connecter is not used.
02 - Ġ&J@KKN 2JEP Ġ?KJP ■ MH✳✳✳FNCA The red number connecter is not used.
PCB Diagram ■ MH✳✳✳FECA ! @ 4# $( % ^ & * ) 5 1 2 6 3 7 8 9 0 ! ‘ + = Float Switch 3 COM 2 Room Temperature 4 Load Control Signal EVA in Temperature 5 Heater # EVA out Temperature 6 Address Switch $ Heater Temperature 7 Option Switch % Wired Remote Controller Power(12V) 8 Fan (Tap Control) ^ Control Signal 9 Ventilator & EEV 0 Drain Pump * Display “ Hot Coil ( Operating Check Signal ‘ Fan (SSR) ) HALL IC + Trans In 1 Download = Main Power 2 COM
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9. Troubleshooting 9-1 Items to be checked first 1. The input voltage should be rating voltage ±10% range. The air conditioner may not operate properly if the voltage is out of this range. 2. Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 4 wires. 2 wires are for power and other 2 wires are for communication, total 4 wires on each indoor unit.
9-2 Checking and Testing operations To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.
Troubleshooting 2.2. Apply the power to the outdoor unit. Outdoor unit will try to communicate the number of indoor units specified by SW01 on outdoor display PCB. Does LED show "Normal display"? "Normal display" means, right 2 digit of LED on Display PCB displays '00' and left 2 digit of LED displays indoor unit address number. Yes OK : This number is displayed only while communicating, so each number is displayed for a short time in order.
Troubleshooting ✳ Expected time of 4 indoor units installation. ✳ • [DIS02 ] shows the indoor unit under searching ✳ • It could take more time depending on the indoor and outdoor temperature. ✳ • After completeing pipe check operation,it shows “ “ on the display PCB.
Troubleshooting ■ In case of MANUAL ADDRESSING mode. Switch Setting and Testing Operation To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly.
Troubleshooting Switch Setting and Testing Operation (cont.
Troubleshooting Switch Setting and Testing Operation (cont.) ROTARY SWITCH “SW02 ” POSITION ACCORDING TO REFRIGERANT CIRCUIT CONNECTED (0=A;1=B;2=C;3=D ) INSTALLATION TEST MODE (with all indoor units functioning) Please do cool mode try-run or heat mode try run. Cool mode try-run :Push the [K2 ] button three times. Heat mode try-run :Push the [K2 ] button once. After 12 minutes of stationary condition check each indoor unit air treatment: Cooling mode (indoor unit check) → Inlet air temp.
Troubleshooting ● If Error code is displayed on indoor or outdoor LED, check as follows; - Manaul address setting Contents Q1 Turn on the system. But outdoor units PCB displayed E201 or E101 Error code. Check point Remarks Step 1 Check to Number of indoor unit’s SW01. Outdoor PCB SW01 Step 2 Check to power cable to indoor units. Check to communication cable indoor units. Wire connect Contents Q2 Turn on the system. But outdoor units PCB displayed E203 Error code.
Troubleshooting Contents Q1 Indoor units address SW setting correct, but outdoor unit’s PCB displayed E201 Error Code. Check point Analysis Remarks Indoor unit’s sub PCB address SW or sub PCB is connected by mistake. Step 1 Check to indoor unit’s sub PCB wire connecting condition.(misconnecting or Sub PCB is out of order) Step 2 Address setting mode change to auto address setting. Step 3 Following auto address setting steps.
Troubleshooting - Operation case Contents Q1 While using cooling or heating, indoor units display E161 Error code Check point Remarks Analysis This problem is caused by user’s fault. User’s simultaneously operate 2 more indoor units in the same time cooling and heating mode. Guidance FJM is operate by just cooling or heating mode only.
Troubleshooting Contents Q5 When system start in cooling mode, System don’t operate and display E441 Error code Check point Analysis Remarks FJM PLUS is able to operate by -10˚C But we admit that minimum Cooling temperature is by -5˚C Please, Remember cooling operation range. Contents Q6 While using heating, outdoor unit turn off and display E404 Error code. Check point Analysis Remarks Heating overload safety mode make this situation.
9-3 Fault Diagnosis by Symptom 9-3-1 Basic Check Flow Preparation : multimeter (AC voltage, DC voltage, Resistance) Check point START Short check for safety Detach cable cover of the terminal blocks (HANDLE CABI RH) on outdoor unit. Check resistance value between L and N of Main power terminal block.
Troubleshooting Basic Check Flow(cont.
Troubleshooting 9-3-2 Checking Outdoor Controller 1. Making sure the wire connections. 2. Checking AC line 1) Checking FUSE 2) Checking resistance between 'L wire (SKY BLU)' and 'BD01 Neutral' normal value : 190 - 210Ω If value is ∞ then check R001. 3) Checking resistance between 'N wire (BRN)' and 'BD01 Live side' normal value : 0 - 0.1Ω Live Neutral 3. Checking ON/OFF pattern of LED1(Red), LED2(Green), LED3(Yellow) Apply the power then ALL LEDs are on for about 1 second. then changed to as follow.
Troubleshooting 4. Checking Display PCB LED if Error code is displayed. See error code table if displayed. 5. Checking DC voltage on each point Item Measuring point Normal value Q803 E(-)~D101 Cathode (+) about 1.4 times as much as Power AC Voltage ex) AC220V → 305~310Vdc C803 voltage 14.5V~15.5V Main control 12V CN59 pin 1~pin 3 12V~15V Main control 5V CN59 pin 1~pin 2 4.75V~5.25V DC LINK inverter 15V 6. Checking PFC 6. When Input current is over 2.
Troubleshooting 9-3-3 Checking Indoor controller 9-3-4 Checking Power cable and Communication cable See 12-2 "Checking and Testing operations" and installation manual. 9-3-5 Checking Temperature sensor See 12-5 "Fault Diagnosis of Major Parts". In case of a sensor in outdoor unit, temperature can be monitored with "VIEW MODE". Press K4 key on the outdoor display PCB for several time to change the display to sensor temperature value. Left 1 digit of the LED is data index and Right 2 digits are the value.
Troubleshooting DA?GEJC ""3 5GG (CWNV &KCIPQUKU QH /CLQT 2CTVU %WTTGPV ''8 UVGR XCNWG ECP OQPKVQTGF YKVJ 8+'9 /1&' 2TGUU - MG[ QP VJG QWVFQQT FKURNC[ 2%$ HQT UGXGTCN VKOG VQ EJCPIG VJG FKURNC[ VQ EWTTGPV ''8 XCNWG .GHV FKIKV QH VJG .'& KU FCVC KPFGZ CPF 4KIJV FKIKVU KU VJG XCNWG Index Value 3 EEV-A step 4 EEV-B step 5 EEV-C step 6 EEV-D step Remark The step value range is between Zero and 480.
9-4 PCB Inspection 9-4-1 Cautions for Part Replacement 1. The human body carries much static electricity. Before touching a part for repair, replacement or the similar purpose, be sure to touch a grounded metal lic portion by hand to let the static electricity go through the metallic portion to the earth. Especially when handling any micro computer or IC, carefully remove such static electricity before touch ing them. 2.
10. Reference for Installation 10-1 Selecting Area for Installation Select an area for installation that is suitable to customer’s needs. 10-1-1 Indoor Unit 1. Make sure that you install the indoor unit in an area providing good ventilation. It must not be blocked by an obstacle affecting the airflow near the air inlet and the air outlet. 2. Make sure that you install the indoor unit in an area allowing good air handling and endurance of vibration of the indoor unit. 3.
Reference for Installation 10-1-2 Outdoor Unit 1. Make sure that you install the outdoor unit in area not exposed to the rain or direct sun light.(Install a separate sunblind if exposed to direct sun light.) 2. Make sure that you install the outdoor unit in area allowing the good air moment, not amplifying noise or vibration, especially to avoid disturbing neighbors. (Fix the unit firmly if it is mounted in a high place.) 3.
10-2 Connecting Up and Purging the Circuit • The air in the indoor unit and in the pipe must be purged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling capacity and could lead to a malfunction. Refrigerant for air purging is not charged in the outdoor unit. Use Vacuum Pump as shown at the right figure. Each unit must be purged in turn. ■ MH050FXCA2A 1. Check the piping connections. 2.
Reference for Installation ■ MH080FXCA4A 1 Check the piping connections. 2 Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port (5/8” Packed valve)as shown at the figure (Value stem:1/2”-20UNF). WARNING: Make the electrical connection and leave the system into “stand by mode”. Do not turn on the system!. This is necessary for better vacuum operation (full OPEN position of Electronic Expansion Valve -EEV -).
10-3 Refrigerant Refill 10-3-1 MH050FXCA2A Refill an air conditioner with refrigerant when refrigerant has been leaked at installing or using. 1) Purge air(for new installation only). 2) Turn the 3 way valve clockwise to close, connect the pressure gauge (low pressure side) to the service valve, and open the 3 way valve again. Suspension hook Compound gauge High pressure gauge Hand wheel Finger tight fittings 3) Connect the tank to refill with refrigerant.
Reference for Installation 10-3-2 MH080FXCA4A Refill an air conditioner with refrigerant when refrigerant has been leaked at installing or using. 1) Purge air(for new installation only). 2) Turn the 5/8" service valve clockwise to close, connect the pressure gauge (low pressure side) to the service valve, and open the 5/8" service valve again. Suspension hook Compound gauge High pressure gauge Hand wheel Finger tight fittings 3) Connect the tank to refill with refrigerant.
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10-5 Flare Nut Fixing Torque orque(kg Torque (kg..
10-6 "Pump down" Procedure 10-6-1 MH050FXCA2A Pump down will be carried out when an evaporator is replaced or when the unit is relocated in another area. 1) Remove the caps from the 2 way valve and the 3 way valve. 2) Turn the 3 way valve clockwise to close and connect a pressure gauge (low pressure side) to the service valve, and open the 3 way valve again. 2 way Valve 3 way Valve 3) Set the unit to cool operation mode. (Check if the compressor is operating.
Reference for Installation 10-6-2 MH080FXCA4A Pump down will be carried out when an evaporator is replaced or when the unit is relocated in another area. 1) Remove the caps from the 3/8" service valve and the 5/8" service valve. 5/8" Service Valve 2) Turn the 5/8" service valve clockwise to close and connect a pressure gauge (low pressure side) to the service valve, and open the 5/8" service valve again. 3/8" Service Valve 3) Set the unit to cool operation mode. (Check if the compressor is operating.
11. Reference Information 11-1 Index for Model Name FREE JOINT MULTI FOR EUROPE M H 052 F P E A 4 A / O O O Buyer code Product Type M Capa Multi Rating voltage *10Kw(3 digit) Mode Comp. Type C C/O F Free Inverter H H/P D Redd Digital Scroll Combination Quantity A 115V, 60Hz _,12.. Indoor B 220V, 60Hz 1,2.. C 208~230V, 60Hz D 200~220V, 50Hz E 220~240V, 50Hz M 127V, 50Hz Outdoor FJM Version _,12.. Indoor _,A,B..
Index for Model Name (cont.
11-2 Refrigerating Cycle Diagram ■ MH050FXCA2A 11-3 Samsung Electronics
Reference Information ■ MH080FXCA4A Samsung Electronics 11-4
11-3 Pressure & Capacity mark ■ Power/Heat W cal/s kcal/h Btu/h kg . m/s HP ib . m/s 1 0.23885 0.85985 3.4121 0.001341 0.10197 0.73756 4.1868 1 3.6 14.286 0.0056146 0.42693 3.088 1.163 0.27778 1 3.9683 0.0015596 0.11859 0.85778 0.29307 0.06999 0.252 1 3.9302x10-4 0.029885 0.21616 745.7 178.11 641.19 2,544.4 1 76.04 550 9.8067 2.3423 8.4322 33.462 0.013151 1 7.233 1.3558 0.32383 1.1658 4.6262 0.0018182 0.
11-5 Q & A for Non-trouble Classification Class Description Q The cooling is weak. A When it is hot outside, its cooling capacity decreases due to the increase of the ambient temperature. When the dust filter gets blocked or warm outside air gets in, the cooling capacity will decrease. So, make sure to clean the dust filter frequently, prevent heat loss by closing the doors and insulate the cooling area by using curtains, blinds, shades or window tinting. Q The cooling is good generally.
Q & A for Non-trouble (cont.) Classification Class Description component handling place; when its chemical or musty smells are sucked in and sent out, it can be misled that the air conditioner generates them. So, find and root out the problem or refresh the room frequently. Q Whenever the air conditioner is turned on, it stinks. A There are no components in the air conditioner sending out chemical smells.
Q & A for Non-trouble (cont.) Classification Class Description Q The remote controller won't operate. A When the batteries run out or the transmitter or receiver of the remote controller is blocked by obsta Operation cles, change the batteries or keep the obstacles away from the controlling area. Also, the remote con troller may not work under intensive light from a 3-wave length lamp or a neon sign due to the EMI. In this case, take the remote controller closer to the receiver.
11-6 Common sense of refrigeration 11-6-1 Air supplier ■ Air supplier? It supplies fresh air to the building or room through procedure of air circulation for fresh environment. ■ Effectiveness of air supplier It diminishes the stress or fatigue and enhances vivid desire through fresh air circulation. Also, filthy air indoor is being cleaned by Air-Filter and it keeps clean and fresh environment and dehumidification.
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