Sanyo SAP-KRV94EHDX service manual Outdoor Fan Motor

Page 47

10-4-2. Outdoor Fan Motor

This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor.

To perform diagnosis, follow the instructions in "Checking the Outdoor Unit" on the previous page and set the outdoor unit to Test Run mode (compressor ON, outdoor fan motor ON).

Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors.

(B)When performing voltage measurement at the outdoor controller connector for (3) in the table below, the DC motor will trip and voltage output will stop approximately 10 seconds after operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor unit power, then follow the instructions in "Checking the Outdoor Unit" and again set the unit to Test Run mode.

[Trouble symptom 1] The fan does not stop when the outdoor unit stops. Outdoor unit controller trouble

[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.

(Diagnostic procedure)

*Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor unit controller (3 locations).

Measurement location

Normal value

(1) Vs-Gnd: Between pin 1 and pin 4

DC 230 V or more

(2) Vcc-Gnd: Between pin 5 and pin 4

DC 14 V or more

 

 

(3) Vsp-Gnd: Between pin 7 and pin 4

After fluctuating 4 times between DC 1.0 to 4.3 V

 

(1 sec. ON) and DC 0 V (1 sec. OFF), the DC

 

motor trips.

 

 

(Diagnostic results)

All of the above measured values are normal. Fan motor trouble (Replace the motor.) Any one of the above measured values is not normal. Outdoor unit controller trouble

(Replace the controller .)

(Reference) DC motor connector pin arrangement Pin 1: Vs (white)

Pin 2: Not used

Pin 3: Not used

Pin 4: Gnd (black)

Pin 5: Vcc (red)

Pin 6: FG (blue)

Pin 7: Vsp (yellow)

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor unit operates.

(There is trouble in the system that provides feedback of motor rotation speed from the motor to the outdoor unit controller.)

[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.

[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.

(Remedy for symptom 3 to 5)

It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble. Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.

47

Page 46 Page 48
Image 47
Page 46 Page 48
Contents DC Inverter Split System AIR Conditioner Table of Contents Checking Electrical Components Please Read Before Starting For safe installation and trouble-free operation, you MustOperating Range Indoor Unit SAP-KRV94EHDX Unit SpecificationsOutdoor Unit SAP-CRV124EHDX SAP-KRV124EHDXSAP-KRV94EHDX Major Component SpecificationsCB-KRV124EHDX Outdoor Unit CB-CRV124EHDX Other Component Specifications Dimensional Data Dia .35 1/4 Indoor Unit SAP-KRV94EHDX Outdoor Unit SAP-CRV94EHDX Refrigerant Flow DiagramRefrigerant Flow Diagram Insulation of Refrigerant TubingPerformance Data Temperature ChartsIndoor Unit SAP-KRV124EHDX Outdoor Unit SAP-CRV124EHDX Air Throw Distance Charts Indoor Unit SAP-KRV124EHDX Heating Electrical CharacteristicsCooling SAP-CRV94EHDX SAP-KRV94EHDX SAP-CRV124EHDX SAP-KRV124EHDX Electric Wiring DiagramsOutdoor Unit Indoor Unit Installation Site Selection About Wiring System Diagram Recommended Wire Length and DiameterMounting on a Wall Remote Control Unit Installation PositionON/OFF How to Test Run the Air ConditionerHow to replace the grille Remove the Grille to Install the Indoor UnitHow to remove the grille Switching the remote controller address MaintenanceAddress Setting of the Remote Control Unit Removing and Mounting the Drain Hose Removing the Electrical Component Box Page Removing the Panel Motor Removing the Drain Pan Air Outlet Assy Removing and Mounting the Drain Pan Air Outlet AssyWater in the drain pan Mounting the Drain Pan Air Outlet AssyRemoving the Negative Ion Generator Mounting the Fan Motor Removing and Mounting the Fan MotorRemoving the Fan Motor Removing the Fan How to Connect How to DisconnectAuto cooling/heating operation FunctionsOperation Functions Emergency operationLamp colors Timer backupFreeze prevention Compressor discharge temperature controlProtective Functions Overload prevention during heatingNon-Stop Defrosting Mode CoolingMode Heating Method of Self-Diagnostics TroubleshootingPrecautions before Performing Inspection or Repair ION Timer Operation Self-diagnostics LampsChecking the Indoor and Outdoor Units Trouble Diagnosis of Indoor and Outdoor Fan Motor Diagnostic procedureDiagnostic results Remedy for symptom 3 toOutdoor Fan Motor Electromagnetic interference Noise Malfunction and Electromagnetic InterferenceNoise malfunction Upper right screw Grille Screw Flap Screw cover Making a Diagnosis of the Panel Motor Measurement of Insulation Resistance Checking Electrical ComponentsChecking Continuity of Fuse on PCB Assy Size of flare Refrigerant R410A Special Precautions When Servicing UnitCharacteristics of New Refrigerant R410A Checklist before ServicingIf refrigerant R410A is exposed to fire Tubing precautionsNo addition of compressor oil for R410A No use of refrigerant other than R410ATool Distinction Tool Name Tubing Installation ProceduresTools Specifically for R410A For servicing, use the following tools for R410ACase of Compressor Malfunction Procedure for Replacing CompressorUnit. This may cause Configuration and characteristics of cylindersRecharging Never charge a large amountWelding leaking points Case Refrigerant is LeakingUse of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing SystemsOI-852-6-4180-791-00-0 Child Lock FeaturesProduct Information ContentsAlert Symbols Electrical Requirements Installation LocationSafety Instructions Names of Parts Unit Display and Operation Button Remote Control Unit Display Remote Control Unit Cool AutoHeat DRYONE TIME/EVERYDAY Using the Remote Control UnitControl Unit Using the Remote Control UnitRemote control unit mount Mounting screws 4 x 16 included Press the ON/OFF operation button Operation with the Remote Control UnitStep StepCover closed Cover opened Step Operation with the Remote Control UnitAdjusting the Fan Speed Setting Temperature Cooling and DRY ModeNight Setback Mode is used for saving energy SettingQuiet Mode Special Remarks Operation Indication Setting the TimerExample To set to OFF Setting the TimerTo cancel a timer program Press the Cancel button 2230 610 2000 Present timeOperation together with the Daily ON/OFF Repeat Timer Using the 1.2.3.5-Hour OFF TimerSetting procedure Cancellation procedureFAN Heat Adjusting the Airflow DirectionSweep Indoor Unit Care and CleaningFilter Care and CleaningHow to replace the anti-mold Remounting the front panelNegative ion generator metal electrodes inside plastic case How to clean the air clean filterTrouble Possible Cause Remedy TroubleshootingOperating Range 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.
Top Page Image Contents