Sinclair SMF-4E27AI User manual

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MULTI SPLITTYPE, HEATPUMPAIRCONDITIONERS
Technical service manual
R410ACassetteInvertermultiSeries
IndoorModels
SMF-C09AI
SMF-C12AI
SMF-C18AI
OutdoorModels
SMF-4E27AI

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CONTENTS
1.Features
2.Specification
3.Outlineand dimension
4.Indoor unitcombination
5.Capacitytable
6.Wiring diagram
7.Electroniccontrolfunctions
8.Exploded view

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1.Features:
1)Fashiondesign, qualitylife;
2)Lowoperationnoise;
3)High efficiencyscrewfan;
4)Equal,fast, wide-anglecooling,morecomfortable.

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2.Specification
indoorunit
Model SMF-C09AI SMF-C12AI SMF-C18AI
Powersupply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
CoolingCapacity BTU/h 9,000 12,000 18,000
HeatingCapacity BTU/h 11,000 13,000 20,500
DesignPressure(Hi/Lo) Mpa 4.2/2.5 4.2/2.5 4.2/2.5
Capacity
Max. OperatingPressure Mpa 3.7 3.7 3.7
Model YDK45-4F YDK45-4F YDK45-4F
Brand Welling Welling Welling
PowerInput W80 80 80
Capacitor uF 1.5uF/450V 1.5uF/450V 2.5uF/450V
Indoorfan motor
Speed(hi/mi/lo) r/min 750/660/540 830/730/680 930/830/660
a.Numberofrows 2 2 2
b.Tubepitch(a)xrowpitch(b)mm 21x13.37 21x13.37 21x13.37
c.Finspacing mm 1.3 1.3 1.3
d.Fintype(code) Hydrophilicaluminium Hydrophilicaluminium Hydrophilicaluminium
e.Tubeoutside dia.andtype mm 7.94,innergroove
tube
7.94,innergroove
tube
7.94,innergroove
tube
f.Coil lengthxheight xwidth mm 1185X210X26.7 1185X210X26.7 1185X210X26.7
Indoorcoil
g.Numberofcircuits 5 5 5
Indoorairflow(Hi/Mi/Lo)m3/h 600/500/420 680/580/500 860/760/650
Indoornoiselevel(Hi/Mi/Lo) dB(A) 36/33/30 36/33/30 43/40/38
Pipe size Liquidside/ Gasside mm(inch) φ6.35 (1/4’)
φ9.53 (3/8’)
φ6.35 (1/4’)
φ12.7(1/2’)
φ6.35 (1/4’)
φ12.7(1/2’)
Dimension (W*H*D) mm 580×254×580 580×254×580 580×254×580 Indoor
unit(body) Packing(W*H*D) mm 750x340×750 750x340×750 750x340×750

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Net/Gross weight(body)Kg 21/28 21/28 28/36
Dimension (W*H*D) mm 650x30x650 650x30x650 650x30x650
Packing(W*H*D) mm 715x115x715 715x115x715 715x115x715
Indoor
unit(panel) Net/Gross weight(panel)Kg 3/5 3/5 3/5
Application area m214-21 18-26 35-40
Qtyper20’/40’/40’HQ Pieces

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OUTDOORUNIT:
OutdoorModel SMF4E27AI
Indoorunit combination single double Treble Quadplex
Powersupply Ph-V-Hz 1Ph,220-240V~,50Hz
CoolingCapacityrange Btu/h 7000~18000 14000~24000 21000~26000 27000
Rated input powerrange W750~1870 1450~2430 2050~2600 2650
Rated current range A 3.1~7.8 6.1~10.1 8.56~10.9 11.1
Cooling
EER 10.2
HeatingCapacityrange Btu/h 9000~18000 16000~25000 21000~27000 28000
Rated input powerrange W850~1790 1470~2520 2020~2650 2700
Rated current range A 3.5~7.5 6.1~10.5 8.43~11.1 11.3
Heating
COP 10.4
Max. input consumption W4500
Max. current A25
Model BA160X2CS-20KU
Type Rotaryinverter
Brand GDToshiba
Capacity Btu/h 18000(60HZ)
Input W1690 60HZ）
Rated current(RLA) A11.6 60HZ）
Locked rotorAmp(LRA) A60
Thermalprotector Internal
Capacitor uF 85UF/250V
Compressor
Refrigerant oil ml RB68AF/α68TF/T-68750 ml
Model YDK100-6
Outdoorfan
motor Brand Welling

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Input W
169(HIGH)
Capacitor uF
5uF/500VAC
Speed r/min
900(HIGH)
a.Numberofrows
2
b.Tubepitch(a)xrowpitch(b)mm
25.4×22
c.Finspacing mm
1.5
d.Fintype(code)
Hydrophilicaluminium
e.Tubeoutside dia.andtype mm
φ9.53 innergroovetube
f.Coil lengthxheight xwidthmm
850×810×44
Outdoorcoil
g.Numberofcircuits
2
Outdoorairflow m3/h
3500
Outdoornoiselevel dB(A)
57
Dimension(W*H*D) mm
895X860X330
Packing(W*H*D) mm
1043X915X395
Outdoorunit
Net/Gross weight Kg
80/84
Refrigerant typeandcharge g
R410A, 2700
Designpressure(Hi/Lo) MPa
4.2/2.5
Liquidside/ Gasside mm(inch)
6.35(1/4)/9.53(3/8)
Max.refrigerantpipelengthfor
eachunit m
20
Refrigerant
piping
Max.differenceinlevelbetween
indoorandoutdoorunit m
10
Connection wiring
No
Plugtype
No
Thermostat type
Electroniccontrol
Cooling ℃
17~43
Operation temp heating ℃
-7~21

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Qty’per20’/40’/40'HQ set
Notes:
1. Nominalcoolingcapacitiesarebased on thefollowingconditions:
Indoortemp: 27°CDB, 19°CWB;
Outdoortemp: 35°CDB;
Equivalent ref. Piping: 8m(horizontal)
Outdooroperatingfrequency:78Hz
Indoorcombination:7KX4, settingtemp.:17℃,settingfan speed: highspeed.
2. Nominalheatingcapacitiesarebased on the followingconditions:
Indoortemp: 20°CDB;
Outdoortemp: 7°CDB, 6°CWB;
Equivalent ref. Piping: 8m(horizontal)
Outdooroperatingfrequency:85Hz
Indoorcombination:7KX4, settingtemp.:30℃,settingfan speed: highspeed.
3.Actualnoiselevelmaydiffer, dependingon the roomstructure, etc, sincethesenoisevaluesarefroman anechoicroom.

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3.Outlineand dimension
Indoorunit(7k/9k/12k/18k):
580(Body) 67
600(Ceilinghole)
650(Panel)
401(Hook-location)
611(Hook-location)
580(Body)
422 28.5
600(Ceiling hole)
650(Panel)
Drain side and Tubing side
A
600
Hook
265
Panel
Chart4
Body
Nut
Ceiling
Outdoorunit
1013
590
300 330 355
163 141
895
COMP

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4.Indoor unit combination:
Cautionon combination
The one-drive-fouroutdoorunitSMF-4E27AI nominalcooling capacityis8kw(under
condition ofambienttemp.35℃db/24℃wb,indoortemp.27℃db/19℃wb).According to
refrigeration design criterion,totalindoorunitcapacityshouldbe equaltooutdoorcapacity,
otherwise,wecan notguarantee bestperformanceand safeoperation.Although,wemade
specialdesignonrefrigerationsystemregardingcustomer’srequirements.Based onthis,
when indoortotalcapacityexceed outdoorcapacity,themachine can stillrun.Underthis
condition,the singleindoorunitcapacitywill attenuate.Thatmeansyou can notgainthe
nominalcapacity, but smallerthan it. Weareout of responsibilityif customersdon’t followthe
noticebelow:
1.You can connect two, three orfourindoorunitsaccording toyourneed;
2.The totalindoorunitnominalcapacityshouldnotexceed 11.3kw(42%morethan nominal
capacity);
3.Thereshouldbenomorethan one 18k(eithercassetteorduct)indoorunitwhen four
indoorunitsareconnected, and otherindoorunit shouldbeall7k;
4.Whenthreeorfourindoorunitsareconnected,thereshouldbe nomorethan onecassette.
If the cassetteispresent, the otherduct shouldbe all7K
5.Thereisno limit totwoindoorunitscombination.
6.Whenheating, capacityattenuatesharplyifindoorunitcapacityexceed toomuch.

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5. Capacitytable
SMF-4E27AI (7k+7k+7k+7k)
COOLING OUTDOORTEMPERATUREDRY
Indoor
Conditions
21 C 25 C 30 C 35 C 40 C 45 C
TotalcapacitykW 7.63 7.30 7.03 6.64 6.37 6.17
SensitivecapacitykW 6.11 5.84 5.63 5.31 5.10 4.94
21ºCD
15ºCW Input kW. 1.95 2.23 2.51 2.79 3.07 3.35
TotalcapacitykW 8.36 7.99 7.70 7.27 6.98 6.76
SensitivecapacitykW 6.69 6.40 6.16 5.81 5.58 5.41
24ºCD
17ºCW Input kW. 2.06 2.36 2.65 2.95 3.24 3.53
TotalcapacitykW 9.09 8.69 8.37 7.90 7.58 7.35
SensitivecapacitykW 7.27 6.95 6.70 6.32 6.07 5.88
27ºCD
19ºCW Input kW. 2.17 2.48 2.79 3.10 3.41 3.72
TotalcapacitykW 10.45 9.99 9.63 9.09 8.72 8.45
SensitivecapacitykW 8.36 7.99 7.70 7.27 6.98 6.76
32ºCD
23ºCW
Input kW. 2.50 2.85 3.21 3.57 3.92 4.28
HEATING
OUTDOORCONDITIONS
Indoor
Conditions
24 CD
18 CW
12 CD
11 CW
7CD
6CW
4CD
3CW
0CD
-1 CW
-
5CD
-6 CW
-7 CD
-8 CW
-15 CD
-16 CW
Capacity
kW 14.66
11.73 9.78 8.80 8.31 7.33 6.84 6.35
15ºC
Input kW. 5.52 4.42 3.68 3.50 3.31 3.13 2.94 2.58
Capacity
kW 13.77
11.02 9.18 8.26 7.80 6.89 6.43 5.97
18ºC
Input kW. 5.18 4.15 3.46 3.28 3.11 2.94 2.76 2.42
Capacity
kW 12.75
10.20
8.50 7.65 7.23 6.38 5.95 5.53
20ºC
Input kW. 4.80 3.84 3.20 3.04 2.88 2.72 2.56 2.24
Capacity
kW 11.73 9.38 7.82 7.04 6.65 5.87 5.47 5.08 22ºC
Input kW. 4.42 3.53 2.94 2.80 2.65 2.50 2.36 2.06
Capacity
kW 10.20
8.16 6.80 6.12 5.78 5.10 4.76 4.42
27ºC
Input kW. 3.84 3.07 2.56 2.43 2.30 2.18 2.05 1.79

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6.WIRING DIAGRAM
Indoorunit:

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Outdoorunit(SMF-4E27AI)

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7. Electriccontrolfunctions:
7.1Protection
1.3minutesdelayat restart forcompressor.
2.Temperatureprotection of compressortop, compressorstopswhen the temp. of top of
compressorismorethan 120 ,compressorrunswhen thetemp.oftopofcompressorisless
than 105 .
3.When ACvoltage ≥270Vfor30 seconds,OutdoorUnit stopsoperation and alarms.
When ACvoltage ≤260Vfor30 seconds, OutdoorUnitresumesoperation.
4.Invertermoduleprotection, InvertermoduleProtection itselfhasaprotectionfunction
against current,voltage and temperature.
5.Sensorprotectionat open circuitand breaking disconnection.
6.Fan Speed isout of control.When IndoorFan Speed istoohigh(higherthan High
Fan+300RPM)ortoolow(lowerthan400RPM), the unit stopsand LEDdisplays failure
information andcan’t returntonormaloperation automatically.
7.Cross Zerosignalerrorwarning.If thereisno Cross Zerosignalsin4minutes, the unit
stopsand LEDdisplays failureinformation andcan’t returntonormaloperationautomatically.
8.Current protection:When thecurrentismorethan25A, thecompressorstops.
9.Outdoorcondenserhightemperatureprotection: Undercooling mode,ifT3>65for3
minutes, the compressorwillstop.WhenT3<52, the protectionisnot valid.
10.Outdoorlowtemperatureprotection: If theoutdoortemperatureislowerthan-15for
1hour,the compressorand fan motorwillstop. If the outdoortemperatureishigherthan-12
for10 minutesand thecompressorstopsoperationfor1h, orthe outdoortemperatureis
higherthan 5 for10minutes, thenrestart andenterintotheprioroperation mode.
11.Compressorpre-heating function:When the outdoortemperatureislowerthan 3 and
the compressorstopsoperationformorethan3hours,orthe outdoortemperatureislower
than 3 and the powerisjustputon,thecompressorentersintopre-heatingcondition.When
outdoortemp. ismorethan 5 oruseroperateit,pre-heatingconditionwillfinish.
7.2Operatingmode
7.2.1Coolingmode
1.Indoorfan keepsrunning, fanspeedcan beset inhigh/mid/low/Auto:
2.Autofan atcooling mode: (T=IndoorTemp.-Setting Temp.)
Condition Indoorfanspeed
T<1.5 Low
1.5 <T<4 Mid.
Roomtemp.up
T>4 High
T> 3 High
1<T<3 Mid.
Roomtemp.down
T<1 Low
3.Anti-freezingcontroltoindoorevaporatoratcoolingmode(T: evaporatortemp. )
EvaporatorTemp.Compressor
T< 4 Off
T>8 On

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7.2.2Dehumidifyingmode
1.The indoorfan isfixed inlowspeed
2. Lowroomtemperatureprotection:
Whenroomtemperaturedecreasestobelow10℃,indoorfan stop,when roomtemperature
restorestoover12℃,indoorfan start.
3. At dehumidifyingmode, the anti-freezingfunctionoftheindoorheatexchangeristhesame
asthat of cooling mode.
7.2.3Heatingmode
1. IndoorFanactionsat heating mode
IndoorFan can be set at HIGH/MID/LOW/AUTO byusingaremotecontroller, butAnti-cold
wind function prevails.
Anti-coldwind controlfunction atheating mode
Condition
T=Indoorexchanger
temp.
Indoorfan speed
T<34 Off
34 <T<37 Breeze
37 <T<44 Lowspeed
Indoorexchangertemp.
up
T>44 Setting fan speed
T>38 Setting fan speed
33 <T<38 Lowspeed
24 <T<33 Breeze
Indoorexchangertemp.
down
T<24 Off
1.Autowind at heating mode
Condition
T=IndoorTemp.-Setting Temp.
Indoorfan speed
T<1.5 High
1.5 <T<2.5 Mid.
Roomtemp. up
T>2.5 Low
T<1.0 High
1.0 <T<2.0 Mid.
Roomtemp. down
T>2.0 Low
2.Indoorevaporatorhigh-temperatureprotectionat heatingmode
Condition
T=Indoorexchangertemp.
Compressor
T<48 On
53 <T<63 Decreasefrequency of compressor
T>63 Off
7.2.4Defrostoperation
1. Defrostingcondition:
The temperatureofoutdoorheatexchangerremainsconsecutivelylowerthan -2°cformore
than 40 minutes,
2. Endingconditionof defrosting

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If one offollowing conditionsissatisfied, endthe defrost and turnintoheating mode:
a.The defrosttimehasreached to10 minutes.
b.When thetemperatureofoutdoorheat exchangerrisesup to15°C.
3. DefrostingActions:
a. Compressorruns.
b. 4wayvalveswitchesoff,
c. Outdoorfan switchesoff
d. Indoorfan runningaccording toanti-coldwind functioninheating mode.
4.Automaticoperationmode
The airconditionerautomaticallyselectsoneofthefollowing operation modes:cooling,
heating orfan onlyaccordingtothetemp.differencebetween roomtemp.(TA)and set
temp. (TS).
TA—TS Operationmode
TA—TS>2 Cooling
-1 ≤TA-TS≤+2 Fan-only
TA-TS<-1 Heating(air-onlyforcoolingonlytype)
7.3Mode conflict
The indoorunitscan not workcoolingmode and heatingat sametime.
Heatingmode hasapriority.
7.3.1Definition
Coolingmode
HeatingMode Fan Off
Coolingmode
No Yes No No
HeatingMode
Yes No Yes No
Fan No Yes No No
Off No No No No
No: Nomode conflict;
Yes: Mode conflict
7.3.2Incaseofone Indoorunitworking incooling mode orfan mode,and anotherindoor
unitissettoheatingmode,the indoorunitworking incooling mode orfan mode will
change tostand by.The outdoorunit will workinheating mode.
7.3.3IncaseofoneIndoorunitworking inheatingmode,and anotherindoorunitissetto
coolingmode orfan mode,the indoorunitsetting tocoolingmode orfan mode will
change tostand by.
7.4Manualswitch
Mode changeswhen pushthisbutton.
CooingmodeàAutomodeàUnit offàCooingmode
AtCooingmode,after30 minutescoolingoperation whosefan speed issetaslow,the
A/Coperateswithasettingtemp. of 24℃.
At automode, the A/Coperateswithasettemp. of 24℃
7.5Timer Function

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1.The maximumlengthoftimeris24 hoursand the minimumresolving poweris15 minutes.
2.Timeron: firstturnoff the A/C, theA/Cwillbe automaticallyon at the set time.
3.Timeroff: first turnon the A/C, theA/Cwillbe automaticallyoff at the set time
4.Timeron/offfunction(on timeisearlierthan offtime):firstturnoffthe A/C,itwillbe
automaticallyon at set time, and laterbeoff atthe set time, then unit turnsonat settime.
5.Timeroff/on function(offtimeisearlierthan on time):firstturnon the A/C,itwillbe
automaticallyoff at set time, and laterbe on atthe set time, then unit turnsoff at settime.
7.6Autorestart function
Incaseofasudden powerfailure,thisfunctionautomaticallysetsthe unittoprevioussettings
beforethe powerfailurewhen powerreturns.
7.7Cooling capacitytest frequencylocked.
Whentest thecooling capacity, the frequency can be lockedat 78Hzbyfollowing the below:
1.Set the indoortemp. to17 andhigh speed;
2.Pushthe outdoorcheck button for5seconds, then itsfrequency can be fixed at 78Hz.
Afterthe testisover, turnoff the indoortoexit.
Whentest theheatingcapacity, thefrequencycan be lockedat 85Hzbyfollowing the below:
1.Set the indoortemp. to30 andhigh speed;
2.Pushthe outdoorcheck button for5seconds, then itsfrequency can be fixed at 78Hz.
Afterthe testisover, turnoff the indoortoexit.
7.8Indoorunit indicatordisplayfunction:
Operation
Timer
De-frost
Alarm
State
★X X X Indoorroomtemp. sensoropen orshort-circuit
X X ★X Indoorpipetemp. sensoropen orshort-circuit
X ★X X Indoorand outdoorcommunication error
X X X ★Waterlevelalarm
★★X X EEPROMerror
★X X ●Invertermoduleprotection
★●X X Outdoorsensoropenorshort circuit
★●X●Outdoorvoltageprotection
★X●X Compressortoptemp.protection
★X●●Mode conflict
★X ★★Outdoorcurrent protection
flash, ●light,★Xextinguished.

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7.9Outdoor unitLEDdisplayfunction:
1.Whenstand-byit displaynumberof indoorunit online;
2.Whenoperation it displayfrequency of outdoorunit;
3.Whendefrostit display “df”;
4.Whenaprotection orerroroccurred,itdisplayasthe followingtable:
Display Explanation
E0 EEPROMerror
E1 No1Indoorunitspipetemp.sensororconnectorofpipetemp.sensorisdefective
E2 No2Indoorunitspipetemp.sensororconnectorofpipetemp.sensorisdefective
E3 No3Indoorunitspipetemp.sensororconnectorofpipetemp.sensorisdefective
E4 Outdoortemp.sensororconnectorof temp.sensorisdefective
E5 Compressorvoltageprotection
E6 No4Indoorunitspipetemp.sensororconnectorofpipetemp.sensorisdefective
E7 Indoorand outdoorcommunicationerror
P0 Compressortopprotectionagainsttemperature
P1 High pressureprotection
P2 Lowpressureprotection
P3 Compressorcurrent protection
P4 Invertermoduleprotection
P5 Outdoorlowtemp.protection
P6 Condenserhigh-temperatureprotection
7.10Checkfunction:
Thereisacheckbuttonon outdoorpcb.Whenpushthisbutton,the outdoorLEDcandisplay
insequence:
Capacitydemand→Running mode →revisedcapacity →fan state →No.1evaporatorpipe
temp. →No.2evaporatorpipetemp.→No.3evaporatorpipe temp.→No.4evaporatorpipe
temp.→outdoorpipe temp. →Outdoortemp. →discharge gastemp.→currentofoutdoorunit
→No.1opening degree ofelectronicexpansionvalve→No.2opening degreeofEXV →
No.3opening degree ofEXV→No.4opening degreeofEXV→indoorunitnumber→last
protection/errorcode→capacitydemand(cycle)
Explanation forthe somedisplaycontent:
1.Running mode:
DisplayCorresponding mode
0 Off
1 Coolingmode
2 Heatingmode

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2.Fan state:
DisplayCorresponding mode
0 Off
1 Lowfan
2 High fan
3.Opening degreeof EXV:
Opening degreeequalsthe displaydatatimes8;
4.Numberofindoorunit
The indoorunit that can communicatewithoutdoorunitnormally.
7.11Outdoorfanspeedcontrol
Thereisone fan withtwo-speed,the fan speed iscontrolled according ambienttemp.After
the compressorstop,30 secondslaterthe fanstop.
Whencooling:
>27 Highspeed
Ambient temp.rise <27 Lowspeed
>25 HighspeedAmbient
temp.decline <25 Lowspeed
Whenheating:
>14 Lowspeed
Ambient temp.rise <14 Highspeed
>12 LowspeedAmbient
temp.decline <12 Highspeed
7.12Oil returnfunction
If operation frequency islowerthan 54Hzin2hoursconsecutively,it willbe increasedto62Hz
for3minutes.Then itrecoverstothe formeroperation frequency.