Friedrich Kuhl+ KEQ08A11A User Manual

64 PB
TROUBLESHOOTING
COMPLAINT CAUSE SOLUTION
Water “spitting” into room
Sublimation:
Whenunconditionedsaturated,outside
airmixeswithconditionedair,conden-
sationformsonthecoolersurfaces
Ensurethatfoamgasketsareinstalledin
between window panes & in between the unit &
thesleeve.Also,ensurethatfresh
air/exhaustvents(onapplicablemodels)arein
theclosedposition&areintact
Downwardpitchofinstallationistoo
steeptowardsbackofunit
Followinstallationinstructionstoensurethat
downwardpitchofinstalledunitisnolessthan
1/4”&nomorethan3/8”
Restrictedcoilordirtylter
Clean&advisecustomerofperiodiccleaning&
maintenanceneedsofentireunit
Excessive moisture
Insufcientaircirculationthruareato
beairconditioned
Adjustlouversforbestpossibleaircirculation
Inadequate vapor barrier in building
structure,particularlyoors
Advisecustomer
Unit short cycles
Defectivethermistor Replacethermistororelectroniccontrolboard
Unit oversized Seesizingchart.Correctasneeded.
Chassissealgasketnotsealingor
absentcaustingunittoshortcycle
Checkgasket.Repositionorreplaceasneeded
Restrictedcoilordirtylter
Clean&advisecustomerofperiodiccleaning&
maintenanceneedsofentireunit
Prolonged off cycles
Defectiveindoorambientthermistoror
electroniccontrolboard
Checkalarms.Replacethermistororelectronic
controlboard
Outsidewaterleaks
Evaporatordrainpancrackedorob-
structed
Repair,cleanorreplaceasrequired
Obstructedcondensercoil
Usepressurewashorbiodegradablecleaning
agenttoclean
Fanblade/slingerringimproperly
positioned
Adjustfanbladeto1/2”ofcondensercoiln
pack
Room temperature uneven
(Heating cycle)
Bad indoor ambient thermistor
Checkdiagnosticcodes.CheckThermistors.
Replaceasneeded.
Fan speed too low Setathigherfanspeed.
Does not heat adequately
Dirtylter Clean(SeeRoutineMaintenance)
Unit undersized
Checkheatriseacrosscoil.Ifunitoperatesef
ciently,checkifinsulationcanbeaddedtoattic
orwalls.Ifinsulationisadequate,recommend
additional unit or larger one
Heaterhi-limitcontrolcyclingon&off
Checkforadequatefanairacrossheater.Check
foropenhi-limitcontrol.
Shorted or open supplementary heater Doohmmetercheck.
Incorrectwiring Checkapplicablewiringdiagram
Tips continued

Friedrich Kuhl+ KEQ08A11A Specifications

General

Brand	Friedrich
Model	Kuhl+ KEQ08A11A
Category	Air Conditioner
Language	English