Heat Controller SMH 24 User manual

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • [phone] • www.heatcontroller.com
OWNER’S MANUAL
SMA/SMH 09/12/18/24
Version C
Single Zone Ductless Mini-Split System
A/C and Heat Pump

SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
1
Table of Contents
Safety Precautions
Warnings and Cautions ............................................................... 2
Operating Instructions
Part Names.................................................................................. 3
 DisplayPanelIdentication....................................................... 3-4
Features and Functions............................................................ 5-6
 AirowDirectionalControl ........................................................... 7
Typical Operational Occurrences.............................................. 8-9
Care and Maintenance
Care and Maintenance ......................................................... 10-11
Troubleshooting Tips
Troubleshooting Tips ................................................................. 12
CAUTION!
!
•Contactanauthorizedservicetechnicianforrepairormaintenanceofthisunit.
•Installationworkmustbeperformedinaccordancewithlocalandnationalelectricalcodesbyauthorizedper-
sonnel only

SMA/SMHOWNER’S MANUAL
2
•Do not attempt to install this air conditioner by yourself.
•This unit contains no user-serviceable parts. Always consult authorized service personnel for repairs.
•Do not insert or objects into the outlet or intake grilles.
•Do not start and stop air conditioner operation by disconnecting the power supply.
•Take care not to damage the power supply wiring.
•In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the
power supply, and consult authorized service personnel.
•Provide occasional ventilation during use.
•Do not direct air at or heating apparatus.
•Avoid installing the air conditioner near a or other heating apparatus.
•Do not climb on, or place objects on, the air conditioner.
•Do not hang objects from the indoor unit.
•Do not set vases or water containers on top of the air conditioner.
•Do not expose the air conditioner directly to water.
•Do not operate the air conditioner with wet hands.
•Turn off power source when not using the unit for extended periods.
•Do not drink the water drained from the air conditioner.
•Connection valves become hot during Heating; handle with care.
•Do not apply any heavy pressure to evaporator
•Operate only with air installed.
•Do not block or cover the intake or outlet grille.
•Ensure that any electronic equipment is at least 3 feet (1m) away from either the indoor or outdoor
units.
•Do not use gases near the air conditioner.
CAUTION!
!
WARNING!
!
To prevent injury to the user, other people and/or to property, the following instructions must be followed. Incorrect operation
due to ignoring these instructions may cause harm or damage. The seriousness is by the following indications:
WARNING!
!
CAUTION!
!
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
Never do this.
Always do this.
Meanings of symbols used in this manual are as shown below:
!
Heat Controller, Inc.

3
SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
1
54
3
2
3
The display panel of the indoor unit will look like one of the following:
NOTE: For cooling only models ≥18000Btu/h indicator light
2is for FAN ONLY, not defrost.
AUTO indicator
This indicator illuminates when the air conditioner is in AUTO operation.
DEFROST indicator (for cooling & heating models only)
This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air
control feature is activated in heating operation.
1
54
3
2
3
The display panel of the indoor unit will look like one of the following:
NOTE: For cooling only m odels≥18000Btu/h indicator light
2is for FAN ONLY, not defrost.
AUTO indicator
This indicator illuminates when the air conditioner is in AUTO operation.
DEFROST indicator (for cooling & heating models only)
This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air
control feature is activated in heating operation.
1
54
3
2

4
SMA/SMHOWNER’S MANUALHeat Controller, Inc.
3 TEMPERATURE indicator
Displaysthe temperature settings when the air conditioner is operational.
4 OPERATION /POWER indicator
Thisindicator after power is on and illuminates when the unit is in operation. The operation in-
dicator lights rapidly times per second) when safety protection features come into operation.
5 TIMER indicator
Thisindicator illuminates when the TIMER is set ON/OFF.

SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
5
Mode Temp Ambient Operating Conditions
Fahrenheit Celsius
Cooling Outdoor 5 to 109.4 -15 to 43
Indoor =62.6 =17
Heating Outdoor 5 to 75.2 -15 to 24
Indoor =86 =30
Dehumidication Outdoor 23 to 109.4 -5 to 43
Indoor >17 >62.6
See chart below for operating conditions:
Low Ambient Operation and Crank Case Heater Feature:
Whencoolingisneededyearround,includingwhenoutdoortemperaturesareapttofallbelowfreezing,ourS
Seriesductlessmini-splitsystemswillcontinuetowork,astheycomewithfactoryinstalledlowambientcon-
trols.Thelowambientfeatureworksbyregulatingtheheadpressurebyvaryingtheamountofairowthrough
thecondenser,whichhelpstopreventevaporatorfreezeupsandlowpressureproblemsduetolowambient
outdoortemperatures.Lowambientoperationisagreatfeaturefortemperature/humiditysensitiveenviron-
mentsorapplicationssuchasserver/computerrooms,supermarkets,restaurants,orcoolingtowerfans.
Additionally,acrankcaseheaterisrequiredandfactoryinstalled,asitisneededforusewiththelowambient
controls.Thecrankcaseheaterminimizesliquidrefrigerantmigrationtothecompressorwhenthecompressor
isnotoperatingandhelpstokeepthecompressoroilwarmenoughsothatitremainsuidtopreventslugging.
Crankcaseheatersalsoassisttogreatlyreduceheatlosstoambientair.Together,thelowerambientfeature
combinedwiththefactoryinstalledcrankcaseheater,willnotonlyallowtheairconditionertocoolyearround,
butwillalsopreventcompressorfailureinlowambientconditions.
Manual Operation
Manualoperationcanbeusedtemporarilytoruntheairconditionerwithoutusingtheremotecontroller.Thisfea-
turecanalsobeusedtotesttheunitduringinstallationandtroubleshootingbyanauthorizedservicetechnician.
1 Openandliftthefrontpanelupuntilitstopsand
makesaclickingsound.
2 Bypressingthemanualcontrolbutton,theunit
willbeplacedintoforcedAUTOoperationmode.
3 Closethepanelrmlytoitsoriginalposition.
CAUTION
•Onceyoupushthemanualbutton,theoperationmode
willchangeinthefollowingorder:
•Bypushingthebuttontwice,theunitwillbeplaced
intoforcedCOOLmode,whichcanbeusedfortesting
purposes.
•Bypushingthebuttonathirdtime,theairconditioner
willstopoperatingandturnoff.
•Torestoreuseoftheremotecontrollertocontrolthe
unit,simplybegintooperatetheunitwiththeremote
controller.
AUTO COOL OFF
Features and Functions:

Heat Controller, Inc. OWNER’S MANUAL SMA/SMH
6
AUTO operation
•WhenyousettheairconditionertoAUTOmode,itwillauto-
maticallyselectcooling,heating(heatpumpmodelsonly),or
fanonlyoperationdependingonwhattemperatureyouhave
selected and the actual room temperature.
•Theairconditionerwillcontrolroomtemperatureautomatically
around the temperature set point you select.
•IftheAUTOmodeisuncomfortable,youcanchangedesired
temperature settings manually.
ECONOMY/SLEEP operation
WhenyoupushECONOMYbuttononremotecontrollerit
activatesSLEEPmode.Duringcooling,heating(heatpump
only),orAUTOoperation,theairconditionerwillautomatically
increase(cooling)ordecrease(heating)2°F(1°C)perhour.The
settemperaturewillbecomesteady2hourslater.TheSLEEP
modewillturnoffafter7hoursandresortbacktotheprevious
settings.Thefanspeedwillbeautomaticallycontrolled.This
featurecanmaintainthemostcomfortabletemperaturewhile
yousleepandsavemoreenergyduringuse.
DRY MODE/DEHUMIDIFYING operation
•Thetemperatureisregulatedwhiledehumidifyingbyrepeat-
edlyturningonandoffofthecoolingoperationorfanonly.The
fanspeedindicatorwilldisplayAUTOandlowspeedwillbe
used.
Optimal Usage Tips:
Toachieveoptimalperformance,pleasenotethefollowing:
•Adjusttheairowdirectioncorrectlysothatitisnotdirected
directlyblowingonpeople/animals.
•Adjustthetemperaturetoachievethehighestcomfortlevel.
Donotadjusttheunittoexcessivetemperaturelevels.
•WheninCOOLorHEATmodescloseanyopendoorsand
windowswithintheroomthattheunitisoperatingintoin-
creaseperformance.
•UseTIMERONbuttonontheremotecontrollertoselecta
timeyouwanttostartyourairconditioner.
•Donotputanyobjectsnearairinletorairoutlet,astheef-
ciencyoftheairconditionermaybereducedandtheaircondi-
tionermaystoprunningduetoairowblockages.
•Cleantheairlterperiodically,otherwisecoolingorheating
performancemaybereduced.
•Donotoperateunitwithlouversinaclosedposition

SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
7
• Donotoperatetheairconditionerforlongperiods
withtheairowdirectionsetdownwardincoolingor
dehumidifyingmode.Otherwise,condensationmay
occuronthesurfaceoftheverticallouvercausing
moisturetodropontotheoororonfurnishings.
• Donotmovetheverticallouvermanuallyunlessitis
necessary.Alwaysusetheremotecontroller.
• Whentheairconditionerisstartedimmediatelyafter
itwasstopped,theverticallouvermightnotmovefor
approximately10seconds.
• Openangleoftheverticallouvershouldnotbesettoo
small,asCOOLINGorHEATINGperformancemaybe
impairedduetotoomuchrestrictionofairowarea.
• Donotoperateunitwithlouversinclosedposition.
• Whentheairconditionerisconnectedtopower(initial
power),theverticallouvermaygenerateasoundfor10
seconds,thisisanormaloperationfunction.
CAUTION!
!
Airow Direction Control
NOTES:
•Usetheremotecontrollertoadjustthehorizontallouver
•Manuallyadjusttheverticallouver.
To set the vertical air ow(Up–Down) direction
Performthisfunctionwhiletheunitisinoperation.Use
theSWINGbuttonontheremotecontrollertoadjustthe
airowdirection.Theverticallouvercanbemovedat
arangeof6°foreachpressoftheswingbutton,andif
pressingmorethan2seconds,theautomaticswingfunc-
tionwillbeactivatedandthelouverswillmoveupand
downautomaticallytocreateabreeze-likeeffect.
PleaserefertotheREMOTE CONTROLLER
OPERATION MANUALfordetails.
To set the horizontal air ow direction (left–right)
•Movethelefttorightlouvermanuallytoadjusttheair
owinthedirectionyouprefer.
IMPORTANT:Beforeadjustingthelefttorightlouvers,
thesupplypowermustbedisconnected.
Verticallouver

Heat Controller, Inc. OWNER’S MANUAL SMA/SMH
8
Typical Operational Occurrences
Thefollowingeventsmayoccurduringnormaloperation.
1. Protection of the air conditioner.
Compressor protection
•Iftheunitisstoppedandthenimmediatelyrestartedagain,thecompressorwillnotoperateforabout
3 minutes in order to protect the compressor.
Anti-cold air (heat pump models only)
•TheunitisdesignednottoblowcoldairinHEATmode,whentheindoorheatexchangerisinoneof
thefollowingthreesituationsandthesettemperaturehasnotbeenreached.
A)Whenheatinghasjuststarting.
B)Defrostingisoccurring
C)Lowtemperatureheatingisoccurring
Defrosting (Cooling and heating models only)
•Theindoororoutdoorfanstoprunningwhendefrosting(heatpumpmodelsonly).
•Frostmayaccumulateontheoutdoorunitduringheatcyclewhenoutdoortemperatureislowandhu-
midityishigh,resultinginlowerheatingefciencyoftheairconditioner.
•Duringthiscondition,airconditionerwillstoptheheatingoperationandstartdefrostingautomatically.
•Defrosttimemayvaryfrom4to10minutesaccordingtotheoutdoortemperatureandtheamountof
frostbuildupontheoutdoorunit.
2. Mist or steam are being emitted
•Awhitemistmayemitfromtheindoorunitduetoalargetemperaturedifferencebetweenairinletand
airoutletinCOOLmodeinanindoorenvironmentthathasahighrelativehumidity.
•Awhitemistmayemitduetomoisturegeneratedfromthedefrostingprocesswhentheairconditioner
restartsinHEATmodeoperationafterdefrosting.
3. Typical sounds
•Youmayhearalowhissingsoundwhenthecompressorisrunningorhasjuststoppedrunning.This
soundisthesoundoftherefrigerantowingorcomingtoastop.
•Youcanalsohearalow“squeak”soundwhenthecompressorisrunningorhasjuststoppedrunning.
Thisiscausedbyheatexpansionandcoldcontractionoftheplasticpartsintheunitwhenthetempera-
ture is changing.
•Anoisemaybeheardduetolouverrestoringitsoriginalpositionwhenpowerisrstturnedon.
•Asizzlingsoundmaybeheardoccasionallywhentheunitisdefrosting.
4. Dust is blown out from the indoor unit
•Thisisanormalconditionwhentheairconditionerhasnotbeenusedforalongtimeorduringrstuse
oftheunitandanaccumulationofdusthasformedontheunit’soutlet.Cleaningdustoffoftheunit
beforeoperationwillpreventthis.
5. A peculiar smell comes out from the indoor unit
•Thisiscausedbytheindoorunitgivingoffsmellspermeatedfrombuildingmaterial,fromfurniture,or
smoke.Aburningsmellcouldmeanthereissomethingwrongwiththeunit.Powerofftheunitandcall
anauthorizedservicer.
6. Operating mode changes to FAN ONLY mode
•Whentheindoortemperaturereachesthetemperaturesetpointonairconditioner,thecompressorwill
stopautomatically,andtheairconditionermodechangestoFANonlymode.Thecompressorwillstart
againwhentheindoortemperaturerisesabovethesetpointintheCOOLmodeorfallsbelowtheset
pointintheHEATmode(heatpumponlymodels).

SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
9
7. Condensation
•Drippingwatermaygenerateonthesurfaceoftheindoorunitwhencoolinginrelativelyhighhumidity.
AdjusttheverticallouvertothemaximumairoutletpositionandselectHIGHfanspeed.NOTE:Water
coulddropontotheoororobjectsbelowtheindoorunit.
8. Heating mode (heat pump models only)
•Theairconditionerdrawsinheatfromtheoutdoorunitandreleasesitviatheindoorunitduringheat-
ingoperation.Whentheoutdoortemperaturefalls,heatdrawninbytheairconditionerdecreases
accordingly.Atthesametime,theheatloadoftheairconditionerincreasesduetolargerdifference
betweenindoorandoutdoortemperature.Ifacomfortabletemperaturecan’tbeachievedbytheair
conditioner,wesuggestyouuseasupplementaryheatingdevice.
9. Auto-restart function
•Powerfailureduringoperationwillstoptheunitcompletely.
•ForunitswiththeAuto-restartfeature,whenthepowerrestores,theunitrestartsautomaticallyusing
theprevioussettingspreservedbythememoryfunctionoftheunit.Timersettingsmayneedtobe
adjustedafterapowerfailure.
10. Electrical interference
•Electronicequipmentwhichuseswirelessradiotransmitterswithin3ft(1m)oftheairconditioningunit
maycausetheunittomalfunction.Disconnecttheunitwithpowerandthenre-connecttheunitwith
poweragain.PushtheON/OFFbuttonontheremotecontrollertorestartoperation.Ensurethattheair
conditionerunitisasfarawayfromanyelectronicinterferencesourcesaspossible,otherwisewireless
interferencecanoccur.

Heat Controller, Inc. OWNER’S MANUAL SMA/SMH
10
Care and Maintenance
•Donotuseanoverlywetclothtocleantheunitas
it may damage the electronic components. A damp
clothcanbeusedifneeded.
•Donotuseachemicallytreatedclothordusterto
clean the unit.
•Donotusebenzine,paintthinner,polishing
powder,orsimilarsolventsforcleaning.These
maycausetheplasticsurfacetocrackordeform.
•Neverusewaterhotterthan104°F(40°C)toclean
thefrontpanel,itcouldcausedeformationor
discoloration.
CAUTION!
!
Cleaning the Grille, Case and Remote Controller
•Turnthesystemoffbeforecleaning.Toclean,wipe
withasoft,drycloth.Donotusebleachorabrasives.
NOTE: Supply power must be disconnected before
cleaning the indoor unit.
Cleaning the Air Filter
Acloggedairlterreducesthecoolingefciencyof
thisunit.Pleasecleanthelteronceevery2weeks.
1.Lifttheindoorunitpaneluptoanangleuntilitstops
withaclickingsound.
2.Holdthehandleoftheairlterandliftitupslightly
totakeitoutfromthelterholder,thenpullitdown-
wards.
3.RemovetheAIRFILTERfromtheindoorunit.
•CleantheAIRFILTERoncetwoweeks.
•CleantheAIRFILTERwithavacuumcleaneror
water,thendryitinacoolplace.
Continued on next page

SMA/SMH OWNER’S MANUAL Heat Controller, Inc.
11
• Donottouchthemetalpartsoftheunitwhenremoving
thelter.Injuriescanoccurwhenhandlingsharpmetal
edges.
• Donotusewatertocleaninsidetheairconditioner.
Exposuretowatercandestroytheinsulationorelectrical
components,leadingtopossibleelectricshock.
• Whencleaningtheunit,rstmakesurethatthepower
andcircuitbreakerareturnedoff.
CAUTION!
!
4.Removetheairfresheninglter(optionalonsome
models)fromitssupportframe
•Cleantheairfresheninglteratleastonceamonth
withavacuumclearner,andreplaceitevery4-5
months.
5.Installtheairfresheninglterbackintoposition.
6.Inserttheupperportionofairlterbackintothe
unittakingcarethattheleftandrightedgeslineup
correctlywhileplacingthelterintoitsoriginalposition.
Maintenance:
Ifyoudonotplantousetheunitforanextendedperiod
oftime,performthefollowing:
(1)Operatethefanforabouthalfadaytodrythe
insideoftheunit.
(2)Stoptheairconditioneranddisconnectpower.Re-
movethebatteriesfromtheremotecontroller.
(3)Theoutdoorunitrequiresperiodicmaintenance
andcleaning.Donotattempttodothisyourself.
Contactanauthorizedservice.
Check before operation (after extended period of
non-use):
•Checkthatthewiringisnotbrokenoffordisconnected.
•Checkthattheairlterisinstalled.
•Checkiftheairoutletorinletisblockedaftertheair
conditionerhasnotbeenusedforalongtime.

Heat Controller, Inc. OWNER’S MANUAL SMA/SMH
12
Troubleshooting Tips
Stoptheairconditionerimmediatelyifoneofthefollowingerrorsoccurs.Disconnectthepowerandcontact
anauthorizedservicer.
Callfor
serviceif
OPERATIONindicatorlightashesrapidly(5timeseverysecond)andthiscan’tbexedbydis-
connectingthepowerandthenreconnectingit.
Fuseblowsorcircuitbreakertripsfrequently
Otherabnormalsituations(suchasburningsmells)thatcan’tberesolvedusingthestepsoutlined
below.
Symptoms Possible Cause/Things to Check What should be done?
Unitdoes
no start or
operate at
all
Istherepowersuppliedtotheunit? Waitforthepowertoberestoredorcallan
electriciantoaddressanypowersupplyproblem.
Fusemayhaveblownoutoracircuit
breakerhasbeentripped. Replacethefuseoripthecircuitbreaker.
Batteries in remote controller may be dead
or installed incorrectly.
Replace the batteries and ensure the polarities
are correct.
Istheunit’stimerset? Wait or cancel timer setting.
Poor cooling
or heating
(heatpump
modelsonly)
performance
Inappropriate temperature setting. Set temperature correctly.
Airltermaybeblocked Cleantheairltertopreventairowblockages.
Doorsorwindowsareopen.
Closethedoorsorwindowswithinthearea
beingcooled/heatedtoincreaseefciencyand
performance.
Airinletoroutletofindoororoutdoorunit
areblocked. Clearobstructionsaway,thenrestarttheunit.
Compressortimedelayhasbeenactivated Waitapproximately3minutesforthecompressor
to turn on and the unit to begin cooling/heating.
Iftheproblempersistsafterperformingthesechecks,orifyounoticeburningsmells,ortheoperation
indicatorlightashesrepeatedly,immediatelystopoperation,disconnectthepower,andcallanauthorized
servicecenter.

04/2009
06/2011