Fedders E1FC418N6G Service Manual Download Page 25

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PREPARATION OF PIPING

Pipe Length, Elevation and refrigerant charge

Cutting The Pipe And The Cables.

• Measure the distance between the

indoor and the outdoor units.

• Cut the pipe length about 10% more

than the measured distance.

• Cut the electrical cable with about 2

metres more than the measured dis-

tance.

• Each outdoor unit comes with a

refrigerant charge that is sufficient for
use with interconnecting tubing up to
7.5 metres.

• If the required interconnecting tube

exceeds 5 metres, for each additional
metre, add the amount of refrigerant
according to the table as shown below.

Max. Piping
Length per
Indoor Unit

Max. Elevation

per Indoor Unit

• The recommended maximum allowable

tubing length between indoor and

outdoor is 15 metres.

• The recommended maximum allowable

elevation between indoor and outdoor is

5 metres.

Liquid Pipe

Size

1/4”

Additional

Refrigerant

3/8”

21 g/m

57 g/m

Summary of Contents for E1FC418N6G

Page 1: ...ISSUED ON 1 APRIL 2003 FEDDERS LARGE SPLIT UNIT R407C SERVICE MANUAL ...

Page 2: ...SECTION A SPECIFICATIONS SECTION B PARTS LIST AND EXPLODED VIEWS SECTION C INSTALLATION SECTION D TROUBLE SHOOTING SECTION E WIRING DIAGRAM SECTION F TECHNICAL DATA ...

Page 3: ...SECTION A SPECIFICATIONS ...

Page 4: ...0 40 16 1020 40 16 1020 40 16 1020 40 16 Depth 195 7 68 195 7 68 195 7 68 195 7 68 Height 320 12 60 320 12 60 320 12 60 320 12 60 Outdoor Unit Width 895 35 2 895 35 2 895 35 2 895 35 2 Depth 331 13 0 331 13 0 331 13 0 331 13 0 Height 623 24 6 623 24 6 623 24 6 623 24 6 CARTON DIMENSIONS mm inch Indoor Unit Width 1050 41 34 1050 41 34 1050 41 34 1050 41 34 Depth 290 11 42 290 11 42 290 11 42 290 11...

Page 5: ...SECTION B PARTS LIST AND EXPLODED VIEWS ...

Page 6: ...18N6G 17500 5 13 COOL 220 240 50 9 8 2060 8 5 1 43 kg EHFE418N6D EHFC418N6G 17500 5 13 COOL 220 240 50 9 8 2060 8 5 1 50 kg 18300 5 36 HEAT 220 240 50 9 8 2154 8 4 E1FE424N6D E1FC424N6G 21500 6 30 COOL 220 240 50 11 0 2400 8 8 1 55 kg EHFE424N6D EHFC424N6G 21000 6 16 COOL 220 240 50 11 2 2400 8 4 1 70 kg 22000 6 45 HEAT 220 240 50 11 4 2550 8 6 RATING CONDITIONS FEDDERS LARGE SPLIT AIR CONDITIONER...

Page 7: ...lower Wheel Dia102x763lg Antimould 36 08 00110 002 1 1 1 1 11 Blower Wheel Grommet Asm 36 08 00120 001 1 1 1 1 include grommet bearing 12 Drip Tray 36 08 00130 001 1 1 1 1 include PS and PE insulation complete 13 Air Deflector 36 08 00140 001 14 14 14 14 14 Handle Air Deflector 36 08 00150 001 2 2 2 2 15 Tie bar Air Deflector 36 08 00160 001 2 2 2 2 16 Discharge Cover 36 08 00170 001 1 1 1 1 17 Be...

Page 8: ...ittings top bottom back coil Asm connecting tubes ELECTRICAL ASSEMBLY 29 Metal Cover Electical Box 36 08 00280 001 1 1 1 1 30 Metal Cover Terminal Connection 36 08 00290 001 1 1 1 1 31 Base Main PCB 36 08 00300 001 1 1 1 1 32 Electrical Box 36 08 00310 001 1 1 1 1 33 Cover Electical Box 36 08 00320 001 1 1 1 1 34 Cover Terminal Connection 36 08 00330 001 1 1 1 1 35 Strain Relief Interconnect 36 08...

Page 9: ...or 35 03 01280 001 1 1 1 1 NI Spring Thermistor 35 05 00200 001 1 1 1 1 NI Indoor Air Thermistor 10K 35 11 04140 03K 1 1 1 1 NI Indoor Coil Thermistor 10K 35 11 04110 03K 1 1 1 1 NI Outdoor Coil Thermistor 10K 35 11 04120 03K 1 1 NI Jumper Outdoor Thermistor 35 16 04170 011 1 1 PACKAGING PARTS 48 Mounting Bracket Unit 36 08 00460 001 1 1 1 1 49 Remote Control C O Neuter 11 23 03640 020 1 1 49 Remo...

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Page 13: ...05140 001 1 1 1 1 10 Compressor Blanket 35 05 00190 001 1 1 1 1 11 Motor Mounting Bracket Painted 35 24 05090 081 1 1 1 1 12 Partition Asm with foam seal 37 24 08130 001 1 1 1 1 44 Wiring Diagram C O 35 24 00100 003 1 1 44 Wiring Diagram H P 35 24 00120 003 1 1 45 Mounting Bracket Reinforced 37 24 05010 081 2 2 2 2 REFRIGERANT ASSEMBLY 13 Base Pan Asm 1 48 Frame 35 24 08010 084 1 1 Base Pan Asm Br...

Page 14: ... Reversing Valve 37 03 08190 001 1 1 25 Crankcase Heater 35 11 00340 009 1 Crankcase Heater 35 11 00340 010 1 47 Check Valve 36 08 00580 001 1 1 51 Overload Protect DB35 00011C 35 05 00620 001 1 1 70 Filter Drier 37 01 05010 001 1 1 70 Filter Drier 37 24 06110 001 1 1 NI Strainer 88 60 00220 007 1 1 1 1 ELECTRICAL ASSEMBLY 26 Terminal Block 3 Pole 35 03 00570 001 1 1 Terminal Block 5 Pole 35 03 00...

Page 15: ...d Top Left 35 24 00030 001 1 1 1 1 36 EPS Pad Top Right 35 24 00040 001 1 1 1 1 37 EPS Tie bar 35 08 02060 001 1 1 1 1 38 EPS Side Post 35 24 00020 001 2 2 2 2 39 EPS Side Pad 35 24 00050 001 1 1 1 1 40 EPS Bottom Pad 35 24 00060 002 1 1 1 1 41 Carton Box Base 35 24 00080 001 1 1 1 1 42 Drain Adapter Kit 35 08 00820 001 1 1 1 1 include drain adapter gasket 43 Rubber Damper Feet 35 24 00010 001 4 4...

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Page 20: ...SECTION C INSTALLATION ...

Page 21: ...SPLIT TYPE AIR CONDITIONER INSTALLATION MANUAL For 18 000 24 000 Btu C1 ...

Page 22: ... C8 Sealing The Drain Hose And Tubing C9 Attaching The Unit To The Wall Bracket C10 Wiring The Indoor Unit C10 Connecting The Piping To The Indoor Unit C11 OUTDOOR UNIT INSTALLATION C12 Locating the outdoor unit C12 Installing The Outdoor Unit C13 Connecting The Wires To The Outdoor Unit C14 VACUUMING THE PIPING THE INDOOR UNIT C15 Removing air from the tubing and indoor unit C15 Restraining the p...

Page 23: ...ny object into the air inlet and air outlet WARNING WARNING CAUTION CAUTION Keep this manual for future reference as it contains important installa tion and safety instructions Do not install the outdoor condensing unit near flammable gas The condensing unit may catch fire if flammable gas leaks Do not connect the power plug with wet hands Do not expose your skin directly to the airflow for a long...

Page 24: ...the box with the list below Indoor To Outdoor Signal Connecting Wire For Heat pump Model Only Description Quantity 1 1 Remote Control 2 AAA batteries 2 Screws for Remote Control Holder 1 Remote Control Holder 6 Screws for Wall Mounting Bracket 4 Base Leg Damper Wall Bracket 1 Drain Adapter Drain Gasket 1 1 ...

Page 25: ...refrigerant charge that is sufficient for use with interconnecting tubing up to 7 5 metres If the required interconnecting tube exceeds 5 metres for each additional metre add the amount of refrigerant according to the table as shown below Max Piping Length per Indoor Unit Max Elevation per Indoor Unit The recommended maximum allowable tubing length between indoor and outdoor is 15 metres The recom...

Page 26: ...e tubing with the threaded end facing the end of the tubing Clamp the tube in the flaring block adjust the tube so that it is slightly above the block about 1 3 of the total height of the flare Place the yoke on the block with the taper cone over the end of the tube Turn the handle until the flare is completed Check for proper flaring of the tube A properly flared tube should be of even thickness ...

Page 27: ... wall bracket in a level angle Secure the bracket directly on the wall If you are mounting the bracket on plaster board use the tapping screws provided to secure the bracket on to the wall If you are mounting the bracket on a concrete wall use anchor bolts to secure the bracket to the wall If you are using the Right or Left back outlet see page 8 drill a 65mm diam eter piping hole at either on the...

Page 28: ...moving 3 screws Remove it by lifting it up and then out Right Outlet Left Outlet Left Back Outlet Bottom Outlet Removing The Decorative Front INDOOR UNIT INSTALLATION Do not remove the flare nut from the tubing in the indoor unit until you Do not remove the flare nut from the tubing in the indoor unit until you are ready to connect it to the outdoor unit are ready to connect it to the outdoor unit...

Page 29: ...ll rest inside the unit Drain hose Tubing Polyethylene tape Use caution when bending Piping Tape Gas Pipe Insulations Drain Pipe Liquid Pipe Connecting Wire Insert the tubing hose and wire through the wall tube with the drain hose in the lowest position Make sure the tubing hose and wire angle downwards as they pass through and exit the wall tube INDOOR UNIT INSTALLATION ...

Page 30: ...roper position Drain Hose You may connect the wires to the indoor unit by opening the Decorative Front Grille Remove 2 screws that secure the Control Box Cover Connect the wire as shown on the wire diagram located on the control box cover or refer to the Wiring Diagram Section in this manual Wiring The Indoor Unit INDOOR UNIT INSTALLATION Screws Wire Diagram Decorative Front Grille Route the wires...

Page 31: ...ufficiently tighten the flare nut with fingers tighten the flare nut with torque wrench according to the table as shown below Flare nut Indoor unit tubing Torque wrench Spanner Pipe Size Diameter Torque N m 35 6 44 4 9 52mm 3 8 15 87mm 5 8 58 7 73 2 Torque Table INDOOR UNIT INSTALLATION ...

Page 32: ... level and does not exceed the maximum slope of 5 degrees Secure the unit to a base with anchor bolts to reduce vibrations and noise Place the unit with access space for servicing and maintenance Do not install the unit near a heat source steam source and flammable gas Ensure that the minimum distances around the unit are maintained as shown on the right For Heatpump unit mount the unit above the ...

Page 33: ...asten the unit down referred to the mounting dimensions as shown here 604mm 356mm Connecting The Pipe To The Outdoor Unit Align the center of the piping and sufficiently tighten the flare nut with fingers Finally tighten the flare nut with torque wrench according to the Table shown here Torque Table Torque Wrench Liquid Line Gas Line Pipe Size Diameter Torque N m 35 6 44 4 9 52mm 3 8 15 87mm 5 8 5...

Page 34: ...ng the orientation as shown below Wire Retainer Connecting Wire For Flat Type For Round Type Drip Loop Service Cover Screw Wires Caution Caution This air conditioner must be This air conditioner must be disconnected from the supply by a disconnected from the supply by a switch having a 3mm contact switch having a 3mm contact separation in all poles separation in all poles OUTDOOR UNIT INSTALLATION...

Page 35: ...e which may cause a malfunction or ineffectiveness of the com pressor Connect the center hose of the Manifold gauge to the vacuum pump Connect the Manifold gauge to the outdoor unit gas line port as shown Turn the vacuum pump on for about 10 15 minutes in order to evacuate the air Close the manifold valve then turn off the vacuum pump and disconnect the hose Vacuum pump Manifold gauge 3 way valve ...

Page 36: ...e insulation and seal it with polyethylene tape You may connect an additional drain hose The end of the drain outlet should keep a distance from the ground Tape the connecting piping drain hose and wires with polyethylene tape from bottom upwards to the top and secure them to the wall Fill any gap in the wall that has been core drilled Form a drip loop on the electri cal cable to prevent water ent...

Page 37: ...ing are connected properly and securely before turning the power On securely before turning the power On Turn the main switch of the unit to On Operate the Indoor unit at Cool ing Heating mode for fifteen minutes or more Measure the temperature of the intake and the discharge air the temperature difference should be at least 9o C CAUTION CAUTION ...

Page 38: ... clean the air filters Explain the 3 minute delay function NOTICE TO THE CONSUMER Checking The Unit Check all the control functions Check all the indicator lights Check that the drain hose is draining properly Ensure all the units are fastened properly and free from vibrations Upon completion of installing and checking the unit ...

Page 39: ...SECTION D TROUBLE SHOOTING ...

Page 40: ...D1 ...

Page 41: ...erature pressure defective compressor Replace part Small or no sound of refrigerant flow System restriction replace capillary tube High rise in temperature pressure of and strainer condenser frost forms on evaporator Poor cooling Incorrect thermostat setting Adjust Open door or window Correct Air inlet or outlet obstructed Correct Unit exposed to sun Draw curtains Additional heat sources or occupa...

Page 42: ...SECTION E WIRING DIAGRAM ...

Page 43: ...E1 ...

Page 44: ...E2 ...

Page 45: ...E3 ...

Page 46: ...E4 ...

Page 47: ...SECTION F TECHNICAL DATA ...

Page 48: ...ture control range of 16 C to 31 C f 3 minute compressor switch on delay except on power up or system reset for compressor protection g 60 second four way valve switch over meaning switch from ON to OFF and vice versa delay after turning off the compressor except on power up or system reset applicable on Heat Pump Unit only h Cool fan prevention measure in heat mode to reduce discomfort to user ca...

Page 49: ... vii On off timer settings if timer function has been activated viii Sleep function icon if sleep function has been activated ix Arrow icon to indicate the sequence of ON OFF timer actions x Signal transmitted icon to indicate that transmission of command code to receiver is being done The hand held transmitter has one button for each of the following functions in manual operation a POWER ON OFF b...

Page 50: ...the CLOCK button has been pressed prior to this step Adjust the minute setting of the ON OFF timer if the Start Stop button has been pressed a to d and i are exposed buttons The remaining buttons are concealed behind a hinged door A beep sound acknowledging the reception of a valid infrared signal will be generated by the main receiver board if a valid button is pressed III Receiver Module Input V...

Page 51: ...t Whenever the Air con is switched on the air filter usage time will be monitored by the microcontroller When the period of usage reaches 500 hours the red LED on the LED board will light up to indicate that the air filter is dirty The filter should then be removed and cleansed To extinguish the red LED after cleansing and replacing the filter press and hold the Operation Filter reset switch for 3...

Page 52: ...mal in cool mode and reset by turning off main power supply In case the thermistor is fault the transimitter will not be able to function applicable on Heat Pump Unit only Check thermistor open or short circuit 3 Infra Red Sensor Board An Infra Red sensor on this board detects infra fed signal transmission from the remote hand held transmitter IV Operations of the electronic controller 1 ON In man...

Page 53: ...operation time to blow out warm air The indoor fan runs according to the following table during heat mode STEP 1 ID Coil Temp T T 28 C 28 C T 30 C T 30 C ID Fan STOP LOW STEP 2 ID Coil Temp T T 33 C 33 C T 36 C T 36 C ID Fan LOW SET STEP 3 ID Coil Temp T T 46 C 46 C T 50 C T 50 C ID Fan SET HIGH Maintain current state The start up warm airflow control program is regardless room temperature The ind...

Page 54: ...e from the indoor air and tries to maintain room temperature to the default set temperature of 22 C To dry the air the controller executes the dry mode cycle which toggles the compressor and outdoor fan on for 10 minutes and off for 5 minutes repetitively The temperature setting which is not changeable by user is internally set at 22 C In this mode the indoor fan constantly runs at the low speed T...

Page 55: ...on controller will automatically select cool dry or heat mode when this mode is first selected The selected mode of operation will not be exited until Auto mode is de selected If automatic operation is chosen auto mode will be automatically selected Room Temperature Range Mode of Operation That Will Be Entered if Auto Mode Is Selected Room Temp 24ºC Cool Mode 19 ºC Room Temp 24ºC Dry Mode Room Tem...

Page 56: ...control range of the air con controller is from 16ºC to 31ºC both inclusive In manual operation set temperature is adjusted using the temperature setting buttons and on the hand held transmitter At each press of one of the buttons the set temperature is changed by 1ºC if it is currently in cool or heat mode until the upper limit of 31 C or the lower limit of 16 C is reached In Auto mode pressing t...

Page 57: ... to 23 C In dry mode the indoor fan constantly runs at low speed The Auto Fan function is not available Room Temperature Set pt 1 C Set pt 1 C Set pt Set pt 1 C Set pt 1 C Indoor Fan Speed LOW LOW LOW LOW LOW In heat mode Heat Pump Unit only indoor fan speed is controlled as follows Room Temperature Set pt 3 C Set pt 3 C Set pt Set pt 3 C Set pt 3 C Indoor Fan Speed HIGH HIGH LOW LOW Maintain curr...

Page 58: ...ly closed In manual operation the vane can be set to position 1 position 2 and position 3 or made to swing using the hand held transmitter If the user does not wish to control the vane position the Auto Vane function can be chosen In automatic operation the auto vane function is always chosen The vane will thus move to the default vane position according to the mode of operation selected 3 Auto Va...

Page 59: ...n OFF Actions of Sleep function in cool mode In heat or auto heat mode applicable on Heat Pump Unit only one hour after Sleep function is selected the temperature set point will be lowered by 1ºC Two hours later the set temperature will be lowered by another 1ºC Eight hours after selection of Sleep function the air con will be turned OFF Set point Set point 1 Set point 2 Air con OFF Actions of Sle...

Page 60: ...imer operation In addition the yellow LED on the LED board will be lighted to indicate that at least one timer is in operation ON OFF ON Operation If the current time is 8 00 PM the following timer setting will turn off the air con at 11 00 PM and turn it on again at 6 00 AM This sequence will repeat in a cyclic manner STOP START PM AM 6 8 11 Current ON ON OFF Air con Status ON OFF ON timer operat...

Page 61: ...r fan remain on 4 way valve remain off indoor fan run at set speed 3 Heat mode protection applicable on Heat Pump Unit only If the indoor coil thermisor temperature is 28 C and below after the compressor has been turned on for more than 30 minutes in heat mode only then the compressor will stop and the outdoor fan will stop the 4 way valve will remain on and the indoor fan stop the RED LED will bl...

Page 62: ... to 20 C again the cycle will still not start The heat mode cycle will only start when the room temperature descents further to 19 C 5 Indoor Coil Protection Against Icing in Cool Mode After switching on the compressor for 10 minutes in cool mode the electronic air con controller will detect the indoor coil temperature If indoor coil temperature 6 C the indoor fan will operate in accordance with t...

Page 63: ...5 Outdoor Coil Protection Against Icing in Heat Mode applicable on Heat Pump Unit only After switching on the compressor in heat mode the electronic air con controller will monitor the outdoor coil temperature after 30 minutes later the unit will perform outdoor coil de icing if necessary While the outdoor coil is being de iced the green LED on the LED board will blink at approximately 95 times pe...

Page 64: ...n on defrost interval is described in 3 b Defrost termination conditions When the condition of i or iv is satisfied the defrosting operation stops iv The defrost thermistor reads above 5 C v The defrost time exceeds 8 minutes c Defrost interval The defrost interval time is determined as follows There should be a 30 minutes intervals between defrost cycle During this intervals No detection of defro...

Page 65: ...e the 4 way valve must be turned off During this period the indoor fan must be switched off with exception condition as stated in Note 1 otherwise it will fill the room with cool air and cause discomfort to the users Defrost Time Chart Defrost thermistor below 40 C Below 4 C Compressor ON OFF 4 way valve ON OFF Outdoor fan ON OFF Defrost counter Indoor fan ON OFF Low Max 8 min 60 sec 30 sec 60 sec...

Page 66: ...pump Large Split Heat Mode Protection Control Sequence Legend Comp Compressor OD Outdoor Indoor fan runs according to section IV cool fan prevention in heat mode Comp ON OD Fan ON ID Fan Set Comp ON OD Fan ON ID Fan Set Comp ON OD Fan OFF ID Fan High Comp OFF OD Fan OFF ID Fan High Comp ON OD Fan ON ID Fan Set Comp ON OD Fan ON ID Fan Set Comp ON OD Fan OFF ID Fan High Comp ON OD Fan OFF ID Fan Hi...

Page 67: ... indoor fan runs at low speed for 3s viii Following the indoor fan runs at medium speed for 3s ix Following the indoor fan runs at high speed x 3s later the vane moves to down position taking 3 42s stays for 2s xi The vane moves to home position taking 1 47s and stays for 2s xii The vane moves to middle position taking 1 39s and stays for 2s xiii The vane moves to angle position taking 0 565s stay...

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