Heat Controller MSS-024B/A, MSH-0186/A, MSS-018B/A manual Rý u, Pipe Temp, Defrost OFF, Defrost on

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rý u

Defrost Control

"Defrost operation is controlled by timer and sensing temperature of outdoor pipe.

"The first defrost starts only when the outdoor pipe temperature falls below 21°F after 60 minutes passed from starting of heating operation and more than 10 minutes operation of compressor.

"Defrost ends after 12 minutes passed from starting of defrost operation or when the outdoor fan operates with- in 4 minutes after the outdoor pipe temperature rises over WF even if before 12 minutes.

"The second defrost starts only when the outdoor pipe temperature falls below 21°F after 60 minutes passed from ending of the first defrost and more than 10 minutes operation of compressor.

OUTDOOR	More than 60 minutes of	Within	More than 60 minutes of	Defrost
PIPE TEMP.	heating operation	12minutes	heating operation	Defrost
	More than 10 min.	Defrost	More than 10 min.
540F	running of compressor		running of compressor
540F
(DEFROST OFF)

21°F
(DEFROST ON)
		Within	HOT-
		4 minute	START
INDOOR FAN SPEED	ON	OFF	ON	OFF
COMPRESSOR	ON	ON	ON	ON
4-WAY VALVE	ON	OFF	ON	OFF
OUTDOOR FAN	ON	OFF	ON	OFF

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Contents Heat CONTROLLER, INC Contents Indoor Unit FunctionsAuto Wind Operation Owoff Operation Mode Selection Remote ControllerFan Speed Selection Oumw 1 ,260 Product SpecificationsCooling OnlyPower Supply 17Z,-W Air CirculationProduct SpecificationsCooling & Heating 9k, 12k 18k, 24k Jzý, Installation plateIndoor Unit Tubing hole coverGas side Outdoor UnitModel DIM Cooling Only Models Refrigeration Cycle DiagramEvaporator I / \ Cooling & Heating ModelsCamay a Heating HeatIroom Indoor Wiring DiagramIndoor Wiring Diagram MSS-012, MSS-018, MS18, MSS-024, MSF4424LO.a Outdoor Unit Cooling Only Models9k, 12k 18k 24k12k 18k 24k Airflow Direction Control Time delay Safety ControlCooling Operation Mode Function of main controlIntake AIR Temp Setting TEMP. +1F Auto Operation Electronic control modeSetting TEMP. -10F End ModeoMODE1rStart MODE2 MODE3 MODE4 ModesOFF Compressor Soft Dry Operation ModeIntake AIR TE Selecting LowIndoor Intake AIR Temp Setting TEMP. +60FSetting Temp Heating Operation Modeonly Heating ModelDefrost on Rý uPipe Temp Defrost OFFSetting TEMP. -1F Cooling or Heating Mode with Sleep Mode Auto ControlICJ Setting TempForced Operation Crank Case Heater Coil Controlonly Heating modelOutdoor IndoorDiagnosis Display FunctionSelf-diagnosis Function Buzzer SoundWhen servicing InstallationIs toxic when burned When connecting refrigerant tubingSelection of the best location Roof Top InstallationsPiping length and the elevation Lower left and right side of Installation Plate Indoor Unit InstallationAvoid areas where electrical wiring, conduits or Wire or gas line can cause death or injury113 H IW-0 Piping and Drainage of Indoor UnitPreparation of Pipings Started PooFor right rear piping Connection of Pipings5kgm39.8ft.ibs LljFor the left pipings Installation plate. Engage the two hooks of the rear Insert the connecting cable into the indoor unitTape the tubing, drain hose and the connecting Indoor unit installationDrain hose Taping Connecting the pipings to the Outdoor unit Connecting Pipings and the cable to Outdoor unitConnection of the cable 2sanoev Terminals and fasten the wire tightly with the fixing screwChecking the Drainage Attach the Grille onto the cabinet Connect the cable to the indoor unitForming the pipings BwidPage Page Settfemont of Outdoor Unit Temperature, Pressure, Ampere ChanEvaluation of theperformance Operation display Name and Function-Remote ControllerMG OFF Timer Button Sleep Mode Auto ButtonStart/Stop Button Qs Operation Mode Selection ButtonTo remove the Control Box Be careful not to lose the clip when reassem- blingCooling & Heating Remove the securing screwsRemove 2 securing screws Page To remove the Control Box To remove the Grille from the ChassisUnhook the tab on the left inside edge To remove the Discharge GrilleTo remove the Evaporator Remove three screws fixing control box and motorTo remove the Fan Motor To remove the Cross-Flow FanTrouble analysis Cycle Troubleshooting GuideCause of Trouble Does beeping sound is made from the Indoor Unit? Turn off Main Power Cý After 10 secondsConnector related to CN-POWER Connector related to CN-FAN Display PWB Assy Check Connector related to CN-DC/DCR751K C711000PF Micom PIN Check Receiver Assy Product Is not operate with the remote controllerCompressor/Outdoor Fan are unable to drive Turn on Main PowerWhen Indoor Fan does not operate When Vertical Louver does not operate Operation indicator of Indoor unit blinks five times When a comunication error occursCN-TH Phenomena in case of connecting errorIndoor Unit CN-UP/DOWNCN-TRANS CN-FAN CN-POWER RY-COMP+0 , ý Outdoor UnitVoltage of Connectors according to Indoor Fan Speed Optional Function Electronic Control DeviceOptional Function Model Main PWB ASSYOutdoor Unit1OK LD2 LD4 18k, 24kLDt ftn ASMSchematic Diagram Page BA ýJ Parts Name Controller Plate InstallationRemote Controller Heat OTY RemarkIndoor Unit18k, 24k Motor Assy Chassis Assy Parts NameTom, .ý M m mm 7DDD \ , \Front Panel Assy 9k, 12kBase Weld ASM Condenser Compressor ASM Reversing Valve Reversing CoilCapillary Final ASM HEATERCRANK-CASE1 Heat QTY Remark BarrierTOP Cover ASM Rear Panel 31 CAPOutdoor Unit18k `Ty MSS-018A MSH-018A L8k171 PWB ASSY, Main SH-CAPACITOR Reversing Coil QTY RemarkClamp Capacitor Controller Assy Check Valve CAPILLARY, Bent 2021-0024 CAPILLARY, Bent Panel Cover Control29 CAP PANEL, RearMSS-009B MSS-012B 2021-0001 Remark R means service partsICJ No 9O2kFAN Assy Cross Plate Installation Holder Tube Motor Assy Chassis AssyMSS-0188 MSH-018B 2021-0001 2021-0074 2010-0003 2021-0069 2021-0005GQ 21k Service VALVE1/4 Service VALVE112HEATERCRANK-CASE TOP Cover ASMCapillary Final ASMReversing Valve High Pressure S/W2021-0024 I`J FAN MotorMSS-018A MSH-018A SAT City Remark Support Valve High Pressure S/W Reversing CoilPWBASSY,MAIN Extra FAN Barrier ASM UTY Remark2035-0004 2035-0006 2021-0021 2050-0001Heat CONTROLLER, INC