Nordyne DS4QD Series User manual

Split System Air Conditioner - 13 SEER
USER’S MANUAL
DS4QD Series
IMPORTANT SAFETY INFORMATION
WARNING:
To avoid possible equipment damage, fire,
or death, the following instructions must be
observed regarding unit maintenance and
operational procedures.
Please read all information in this manual thoroughly
and become familiar with the capabilities and use of your
appliance before attempting to operate or maintain this
unit. Pay attention to all safety warnings and any other
special notes highlighted in the manual. Safety markings
areusedfrequentlythroughoutthismanualtodesignatea
degreeorlevelofseriousnessandshouldnotbeignored.
WARNING indicates a potentially hazardous situation
thatifnotavoided,couldresultinpersonalinjuryordeath.
CAUTIONindicatesapotentiallyhazardoussituationthat
if not avoided, may result in minor or moderate injury or
property damage.
Keep this literature where you have easy access to it in
thefuture.Ifaproblemoccurs,checktheinstructionsand
followrecommendationsgiven.Ifthesesuggestionsdon’t
eliminateyourproblem,call yourservicingcontractor.Do
not attempt to service this unit yourself!
• Undernocircumstancesshouldtheapplianceownerattempttoinstalland/orservicethis
equipment. Some local codes require licensed installation / service personnel for this
type of equipment. Improper service, adjustment, or maintenance may cause explosion,
fire, electrical shock or other hazardous conditions which may result in personal injury or
property damage.
• Readtheseinstructionsthoroughlybeforeusingtheequipment.Followallprecautionsand
warnings contained within these instructions and on the unit.
• Improper installation, adjustment, alteration, service, or maintenance can cause personal
injury or property damage. Refer to this manual. For assistance or additional information,
consult a qualified installer or service agency.
• Donotstoreorusegasolineorotherammablevaporsandliquidsinthevicinityofthisor
any other appliance.
DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
WARNING:
!
• To achieve optimum performance and minimize
equipment failure, it is recommended that periodic
maintenance be performed on this unit. The ability
to properly perform maintenance on this equipment
requires certain mechanical skills and tools. Please
consult your dealer for maintenance information and
availability of maintenance contracts.
• Theareaaroundthecoolingunitamustbekeptclear
and free of combustible materials, gasoline, and other
flammable vapors and liquids. Do not store or use
flammable items such as paint, varnish, or strippers
in the vicinity of the unit.
• Donotusetheareaaroundtheunitasastoragearea.
Thisarea must be keptclean and clearoflooseor
exposed insulation materials.Examine the unit’s area
when it is installed or when insulation is added, since
some insulation materials may be combustible.
• Donotusethisapplianceifanyparthasbeenunder
water.Immediately call a qualified service technician to
inspect the unit and to replace any part of the control
system and any gas control which has been under
water.
• Familiarizeyourselfwiththecontrolsthatshutoffthe
electrical power to the unit.If the unit needs to be shut
down for an extended period of time, turn off electrical
poweratthecircuitbreaker.Foryoursafetyalwaysturn
off the electrical power before performing service or
maintenance on the unit

2
Figure 1. DigitalThermostat
Fan
Mode Temperature
Selector
System
Mode
ABOUTTHE AIR CONDITIONER
Thissplitsystemcoolingunithasbeendesignedandbuilt
to provide many years of safe and dependable comfort,
providing it is properly installed and maintained. With
regular maintenance, this unit will operate satisfactorily
year after year. Abuse, improper use, and/or improper
maintenance can shorten the life of the appliance and
createunsafehazards.Aregularserviceandmaintenance
schedule should be established to ensure efficient and
safe operation of the unit.
OPERATING INSTRUCTIONS
Thermostat styles vary. Somemodelsmaynotinclude
theAUTOmodeandotherswillhavetheAUTOinplace
ofthe HEATand COOL. Others mayinclude all three.
Please refer to the thermostat’s User Manual for detailed
programming instructions.
Thethermostatshouldbemountedabout5feetabovethe
floor on an inside wall and not on an outside wall or other
locationwhereitsoperationmaybeadverselyaffectedby
radiant heat from fireplaces, sunlight, or lighting fixtures,
and convective heat from warm air registers or electrical
appliances.
Cooling Operation
1. Setthethermostat’ssystemmodetoCOOLorAUTO
andchangethefanmodetoAUTO.SeeFigure1.
2. Set the temperature selector to the desired
temperaturelevel.Theoutdoorfan,compressor,and
blower motor will all cycle on and off to maintain the
indoor temperature at the desired cooling level.
NOTE: If the temperature level is re-adjusted, or the
system mode is reset, the fan and compressor in the
outdoor unit may not start immediately. A protective
timercircuitholdsthecompressorandtheoutdoorfan
offforapproximately5minutesfollowingaprevious
operation or the interruption of the main electrical
power.
Heating Operation
1. Setthethermostat’ssystemmodetoHEATorAUTO
andchangethefanmodetoAUTO.SeeFigure1.
2. Set the temperature selector to the desired
temperature level.The optional heating equipment
(furnace or electric heat) will cycleon & off tomaintain
the indoor temperature at the desired heating level.
Operating the AC for Automatic Cooling &
Heating
1. SetthethermostatsystemmodetoAUTOandthe
thermostatfanmodetoAUTO.SeeFigure1.
2. Set the thermostat temperature selector to the
desired temperature level. The thermostat will
maintain the desired temperature level by switching
between either the outdoor cooling unit or the indoor
heating unit (furnace or electric heat) automatically.
Operating the Indoor Blower Continuously
Thecontinuousindoorbloweroperationistypicallyused
to circulate the indoor air to equalize a temperature
unbalanceduetosolarloads,increasedoccupancyloads,
or mechanical equipment operation. Set the thermostat
fan mode to ON (Figure 1). The indoor blower starts
immediately, and will run continually until the fan mode
isresettoAUTO.
NOTE:Thecontinuousindoorbloweroperationcanbe
obtained with the thermostat system mode set in any
position,includingOFF.
Turning the Air conditioner Off
Changethethermostat’ssystemmodetoOFFandthefan
modetoAUTO(SeeFigure1).NOTE:Thesystemwillnot
operate, regardless of the temperature selector setting.

3
AIR CONDITIONER MAINTENANCE
WARNING:
The DS4QD air conditioner contains liquid and
gaseousrefrigerantunderpressure.Installation
and servicing should only be attempted by
qualified,trainedpersonnelthoroughlyfamiliar
with the equipment and safe responsible
refrigerant handling procedures. Failure to
comply with this warning could result in
equipment damage, personal injury, or death.
WARNING:
To prevent electrical shock, personal injury,
or death, disconnect all electrical power to
the unit before performing any maintenance
or service. The unit may have more than one
electrical supply.
CAUTION:
DO NOT touch any of the internal electrical
components while cleaning the unit.
Proper maintenance is important to achieve optimum
performancefromtheairconditioner.Theabilitytoproperly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills,contactyourdealerformaintenance.Consultyour
localdealerabouttheavailabilityofmaintenancecontracts.
Routine maintenance should include the following:
Regular Cleaning
CAUTION:
DO NOT touch any of the internal electrical
components while cleaning the unit.
• Theareaaroundtheunitandthevicinityofanyother
appliances must be kept clear and free of combustible
materials, gasoline, and other flammable vapors and
liquids. Do not store or use flammable items such as
gasoline, paint, varnish, or strippers in the vicinity of
the unit.
• Keeptheoutdoorunitclean.Hoseoffperiodicallyand
keep unit fins clear of leaves and grass clippings. Be
careful not to damage the aluminum fins. Clean
the outdoor coil and fins as necessary using a mild
detergent and water. Rinse thoroughly with water.
• Keeptheoutdoorunitclearofobstructions.DONOT
obstructairowwithtallplantsorshrubs.Checkforand
remove any obstructions such as twigs, sticks, etc.
• Inspectthecondensatedrainandoutdoorcoilatthe
beginning of each cooling season.Remove any debris.
Air Filters
WARNING:
Never operate the unit without a filter in the
return air system. Dust and lint in the return
air can build up on the internal components,
resulting in loss of efficiency, equipment
damage, and possible fire risk.
• Inspectandcleanorreplaceairltersatthebeginning
of each heatingand cooling season,or more frequently
if required.A clogged filter could cause airflow related
problems and reduce the overall efficiency of your unit.
Always replace disposable filter(s) installed in your
system only with the same size dimensional filters
that are being replaced.
• Neveroperatetheappliancewithoutalterinstalledin
the return air duct.Inspectfilters frequently and replace
when necessary with filter of same dimensional size.
TROUBLESHOOTING
BeforeyoucallaTechnician,checkthefollowing:
• Checkthethermostatsetting.Makesurethesystem
mode and temperature settings are correct.
• Checktheelectricalpanelfortrippedcircuitbreakers.
• Checktheltersfordustaccumulation.
• Check the unit and make sure it is clean and not
covered with grass or leaves.
• Iftheitemsabovedon’tresolveyourproblems,then
call your nearest service technician.
WARRANTY INFORMATION
A warranty certificate with full details is included with the
equipment. Carefully review these responsibilities with
yourdealerorservicecompany.Themanufacturerwillnot
be responsible for any costs found necessary to correct
problems due to improper setup, improper installation,
adjustments, improper operating procedure on the part
of the user, etc.
Some specific examples of service calls which are not
included in the limited warranty are:
• Correcting wiring problems in the electrical circuit
supplying the equipment.
• Resettingcircuitbreakersorotherswitches.
• Adjustingorcalibratingofthermostat.

Specifications & illustrations subject to change without notice or incurring obligations.
O'Fallon,MO|Printed in U.S.A. (08/11) 7093220 (NEW)