Manual

920-087-04 (8-05)
FriedrichDigital ControlFeatures
The new Friedrich digital PTAC has state of the art features to improve guest comfort, indoor air quality and conserve energy.
Through the use of specifically designed control software for the PTAC industry Ffiedfich has accomplished what other Manufactur-
er's have only attempted - a quiet, dependable, affordable and easy to use PTAC.
Below is a list of standard features on every Friedrich PTACand their benefit to the owner.
Digital Temperature Bydigitallymonitoringdesiredroomtemperaturetheroomiscontrolledmorepreciselythanconventionalsystems.The large,easy
Readout to readLEDdisplaycanshoweitherset-pointor actualroomtemperatureasselectedby owner.
Whentheunitispoweredoff theunitcan bereturneddirectlytoheatingorcoolingmodeby pressingthe 'Heat'or 'Coot'buttons
One-Touch Operation withouttheconfusingpowerupsequenceofsomecontrols.One-touchcontroltakesguessworkoutofunitcontroldeliveringamore
enjoyableexperienceandeliminatingfront-deskcalls.
Individual Mode and ByhavingseparatecontrolbuttonsandindicatorsforbothfanandmodesettingstheFriedrichdigitalcontroleliminatestheconfu-
Fan Control Buttons sionofpreviousdigitalPTACs.Theaccuratetemperaturesettingprovidesgreaterguestcomfortthanothersystems.
Thefanstartandstopdelayspreventabruptchangesinroomacousticsduetothecompressorenergizingorstoppingimmediately.
Quiet Start/Stop
Uponcallforcoolingorheatingtheunitfanwillrunforfivesecondspriortoenergizingthecompressor.Also,thefanoffdelayallows
Fan Delay for"free cooling"byutilizingthealreadycoolindoorcoilto itsmaximumcapacitybyrunningfor30secondsafterthecompressor.
Remote Thermostat Someapplicationsrequirethe useof a wallmountedthermostat.All newFriedrichPTACsmaybeswitchedfromunitcontrolto
Operation remotethermostatcontroleasilywithouttheneedto ordera specialmodeloraccessorykit,
Wireless Remote Guestscanadjustthetemperatureandmodeoftheunitthroughtheused anoptionalhandheldwirelessremote,improvingguest
Control Ready comfortandrelaxation.
Internal Diagnostic ThenewFriedrichdigitalPTACfeaturesa selfdiagnosticprogramthatcanalertmaintenancetocomponentfailuresoroperating
Program problems,Theinternaldiagnosticprogramsavespropertiesvaluabletimewhendiagnosingrunningproblems.
Service Error Code Theself diagnosisprogramwilI alsostoreerrorcodesinmemoryif certainconditionsoccurand correctthemselvessuchasex-
tremehighorlowoperatingconditionsor activationof theroomfreezeprotectionfeature,Storingerrorcodescan helpproperties
Storage determineiftheunitfacedobscureconditionsorifanerroroccurredandcorrecteditself.
Constant Comfort Theon-boardprocessormonitorstimebetweendemandcycles(heatorcool)andwilIcyclethefanevery9 minutesto samplethe
roomconditionanddetermineifthedesiredconditionsaremet.Thisallowsthe roomto havesimilarbenefitsto a remotemounted
Room Monitoring statwithoutthecomplicationor costofa wailmountedthermostat.
Electronic Temperature Bylimitingtheoperatingrangethepropertycansaveenergybyeliminating"maxcoot"or"maxheat"situationscommonwitholder
uncontrolledsystems.Thenewelectroniccontrolallowsownerstosetoperatingrangesforbothheatingandcoolingindependently
Limiting of oneanother.
RoomFreeze
Protection
RandomCompressor
Restart
DigitalDefrost
Thermostat
WhenthePTACsensesthattheindoorroomtemperaturehasfallento 40°Ftheunitwillcycleonhighfanandtheelectricstripheat
to raisetheroomtemperatureto 46°Fthencycleoff again.Thisfeatureworksregardlessof themodeselectedandcanbeturned
off.ThecontrolwillalsostoretheRoomFreezecycleintheservicecodememoryfor retrievalata laterdate.Thisfeatureensures
thatunoccupiedroomsdo notreachfreezinglevelswheredamagecanoccurto plumbingandfixtures.
Multiplecompressorsstartingat oncecanoftencauseelectricaloverloadsand prematureunitfailure.The randomrestartdelay
eliminatesmultipleunitsfromstartingat oncefollowinga poweroutageor initialpowerup,Thecompressordelaywillrangefrom
180to 240seconds.
ThenewFriedrichPTACusesa digitalthermostatto accuratelymonitortheoutdoorcoilconditionsto allowthe heatpumpto run
wheneverconditionsarecorrect,Runningthe PTACin heatpumpmodesaveenergyandreducesoperatingcosts.The digital
thermostatallowsmaximizationof heatpumpruntime.