Sanyo SAP-KRV94EHDX service manual Non-Stop Defrosting, Mode Cooling, Mode Heating

Page 42

Defrost detection and release

Non-Stop Defrosting

Defrosting Sequence

Heating operation

Outdoor fan ON

4-way valve Heating mode

Frost sensing

Frosting is assumed according to the outdoor

temp.,outdoor

Outdoor heat exchanger temp.

heat exchanger

0

temp.,and

Ambient temp.

 

operation time.

 

 

Frosting

 

area

Non-stop defrosting

Compressor

ON

2-way valve ON

Outdoor fan

OFF

 

Indoor fan

OFF

 

4-way valve

Heating mode

 

Releasing of defrosting

Outdoor heating exchanger temp. is over 14 C.

Defrosting operation lasts 12 minutes (maximum). 4-way valve is Heating mode. Outdoor fan is ON. 2-way valve OFF

NOTE

If the air conditioner is turned off during the defrosting cycle, it will continue defrosting and turn itself off after defrosting is completed.

CT (Peak current cut-off control)

This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation is interrupted auto- matically to control the electrical current for operation.

When the cause of the increase in electrical current is rectified, the system will resume operation in the original mode.

(A)

 

Cooling

Dry Heating

Peak current cut-off trips

 

17.5

Hz down

12.2

14.0

 

 

 

NOTE Electrical current setting for COOL operation is used during DEFROST operation.

Operation Cut-Off Control in abnormal ambient temperature

The following three protective actions are available to prevent the compressor from operating with abnormal loads.

At that time, they initiate thermo-off (stopping the outdoor unit) of the air conditioner.

Mode : Cooling

Cut-off action

Thermo-off

Thermo-on

t : ambient temp

t : ambient temp

 

Low ambient temp.

t -22 C

t > -18 C

cut-off

 

 

Mode : Heating

Cut-off action

Thermo-off

Thermo-on

t : ambient temp

t : ambient temp

 

High ambient temp.

t

 

25 C

t < 24 C

cut-off

 

 

 

 

 

Low ambient temp.

t

 

-20 C

t > -16 C

cut-off

 

 

 

 

 

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Contents DC Inverter Split System AIR Conditioner Table of Contents Checking Electrical Components For safe installation and trouble-free operation, you Must Please Read Before StartingOperating Range Unit Specifications Indoor Unit SAP-KRV94EHDXSAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDXMajor Component Specifications SAP-KRV94EHDXCB-KRV124EHDX Outdoor Unit CB-CRV124EHDX Other Component Specifications Dimensional Data Dia .35 1/4 Insulation of Refrigerant Tubing Refrigerant Flow DiagramRefrigerant Flow Diagram Indoor Unit SAP-KRV94EHDX Outdoor Unit SAP-CRV94EHDXTemperature Charts Performance DataIndoor Unit SAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDX Air Throw Distance Charts Indoor Unit SAP-KRV124EHDX Electrical Characteristics CoolingHeating Electric Wiring Diagrams Outdoor Unit Indoor UnitSAP-CRV94EHDX SAP-KRV94EHDX SAP-CRV124EHDX SAP-KRV124EHDX Installation Site Selection About Recommended Wire Length and Diameter Wiring System DiagramRemote Control Unit Installation Position Mounting on a WallHow to Test Run the Air Conditioner ON/OFFRemove the Grille to Install the Indoor Unit How to remove the grilleHow to replace the grille Maintenance Address Setting of the Remote Control UnitSwitching the remote controller address Removing and Mounting the Drain Hose Removing the Electrical Component Box Page Removing the Panel Motor Removing and Mounting the Drain Pan Air Outlet Assy Removing the Drain Pan Air Outlet AssyMounting the Drain Pan Air Outlet Assy Water in the drain panRemoving the Negative Ion Generator Removing and Mounting the Fan Motor Removing the Fan MotorMounting the Fan Motor Removing the Fan How to Disconnect How to ConnectEmergency operation FunctionsOperation Functions Auto cooling/heating operationTimer backup Lamp colorsOverload prevention during heating Compressor discharge temperature controlProtective Functions Freeze preventionMode Cooling Mode HeatingNon-Stop Defrosting Troubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Self-diagnostics Lamps ION Timer OperationChecking the Indoor and Outdoor Units Remedy for symptom 3 to Diagnostic procedureDiagnostic results Trouble Diagnosis of Indoor and Outdoor Fan MotorOutdoor Fan Motor Noise Malfunction and Electromagnetic Interference Noise malfunctionElectromagnetic interference Upper right screw Grille Screw Flap Screw cover Making a Diagnosis of the Panel Motor Checking Electrical Components Measurement of Insulation ResistanceChecking Continuity of Fuse on PCB Assy Checklist before Servicing Refrigerant R410A Special Precautions When Servicing UnitCharacteristics of New Refrigerant R410A Size of flareNo use of refrigerant other than R410A Tubing precautionsNo addition of compressor oil for R410A If refrigerant R410A is exposed to fireFor servicing, use the following tools for R410A Tubing Installation ProceduresTools Specifically for R410A Tool Distinction Tool NameProcedure for Replacing Compressor Case of Compressor MalfunctionNever charge a large amount Configuration and characteristics of cylindersRecharging Unit. This may causeCase Refrigerant is Leaking Welding leaking pointsRetro-Fitting Existing Systems When Tubes are ExtendedCharging Additional Refrigerant Use of Existing UnitsOI-852-6-4180-791-00-0 Features Child LockContents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Names of Parts Unit Display and Operation Button Remote Control Unit Display Remote Control Unit DRY AutoHeat CoolUsing the Remote Control Unit ONE TIME/EVERYDAYUsing the Remote Control Unit Remote control unit mount Mounting screws 4 x 16 includedControl Unit Step Operation with the Remote Control UnitStep Press the ON/OFF operation buttonOperation with the Remote Control Unit Cover closed Cover opened StepAdjusting the Fan Speed Setting Cooling and DRY ModeNight Setback Mode is used for saving energy Setting TemperatureQuiet Mode Special Remarks Setting the Timer Example To set toOperation Indication 2230 610 2000 Present time Setting the TimerTo cancel a timer program Press the Cancel button OFFCancellation procedure Using the 1.2.3.5-Hour OFF TimerSetting procedure Operation together with the Daily ON/OFF Repeat TimerAdjusting the Airflow Direction SweepFAN Heat Care and Cleaning Indoor UnitRemounting the front panel Care and CleaningHow to replace the anti-mold FilterHow to clean the air clean filter Negative ion generator metal electrodes inside plastic caseTroubleshooting Operating RangeTrouble Possible Cause Remedy Osaka, Japan Sept

SAP-KRV94EHDX specifications

The Sanyo SAP-KRV94EHDX is a cutting-edge split-type air conditioning unit that exemplifies advanced technology and efficiency. Designed for both residential and commercial spaces, this model is equipped with features that cater to various cooling and heating needs.

One of the main highlights of the Sanyo SAP-KRV94EHDX is its energy efficiency. With a high Energy Efficiency Ratio (EER), this unit minimizes energy consumption while maximizing cooling performance. This not only results in lower electricity bills but also contributes to a reduced carbon footprint, making it an environmentally friendly choice for users.

The SAP-KRV94EHDX employs inverter technology, which allows the compressor to adjust its speed dynamically based on the temperature requirements of the environment. This means that the unit operates more quietly and uses less energy when maintaining a consistent temperature. The inverter system ensures that the air conditioner can quickly reach the desired cooling or heating temperature and maintain it without the frequent on-off cycles typical of traditional units.

Additionally, the air conditioning unit comes with a powerful cooling capacity, effectively managing larger spaces. It can easily handle varying ambient conditions while providing rapid cooling in extremely warm weather, making it perfect for areas with hot climates.

Other notable features include a user-friendly remote control, allowing users to adjust settings from a distance effortlessly. The unit also incorporates a multi-stage air filtration system designed to remove dust, allergens, and other airborne particles, contributing to better indoor air quality.

The Sanyo SAP-KRV94EHDX is not just about functionality; it also boasts a sleek and modern design that blends seamlessly with various interior aesthetics. Its quiet operation ensures that it does not disturb daily activities, making it suitable for bedrooms, offices, and living spaces.

Moreover, the unit comes with various operational modes, including cooling, dehumidification, and a heating function. This versatility makes the SAP-KRV94EHDX an all-season solution for climate control.

In summary, the Sanyo SAP-KRV94EHDX is a top-tier air conditioning unit that combines efficiency, advanced technology, and user convenience. Its inverter technology, multi-stage air filtration, and modern design make it a reliable choice for anyone seeking comfort throughout the year.
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