Sanyo XMS1272, XMS0972 service manual Checking the Indoor and Outdoor Units, Replace the controller

Page 33

(2)If the self-diagnostics function fails to operate Check the indoor unit.

Is the fuse blown?

Normal

Replace the controller.

No indicators illuminate and the indoor fan does not rotate.

Check the power voltage.

Blown

Replace the circuit board or the fuse.

8-3. Checking the Indoor and Outdoor Units

(1) Checking the indoor unit

No.

Control

Check items (unit operation)

1

Use the remote controller to operate the

The rated voltage must be present between inter-unit wirings 1 and 2.

 

unit in "TEST run" mode. To determine

Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the

 

whether the mode is currently in

voltage at both ends is measured, approximately 12 to 15V DC must

 

"TEST run" mode, check the 3 indicator

be output and the multimeter pointer must bounce once every 8

 

lamps on the unit. If all 3 are blinking,

seconds.

 

the current mode is "TEST run."

Or instead of measuring the voltage, you can insert an LED jig and

 

 

check that the LED flickers once every 8 seconds.

If there are no problems with the above, then check the outdoor unit.

For the "Test run" procedure, refer to the Appendix B "Installation Instructions".

(2) Checking the outdoor unit

 

 

 

 

No.

Control

Check items (unit operation)

1 Apply the rated voltage between outdoor

The control panel LED (red) must illuminate.

 

unit terminals L and N.

 

2Short-circuit the outdoor unit COM terminal The compressor, fan motor and 4-way valve must all turn on. to the T-RUN terminal.

If there are no problems with the above, then check the indoor unit.

Using the TEST/T-RUN terminals

 

TEST/T-RUN terminals

 

 

 

 

 

 

 

 

 

 

T-RUN : Test run (compressor and fan motor turn ON).

 

 

 

 

 

 

 

 

 

 

TEST/MV : Compresses time to 1/60th (accelerates

 

 

 

 

 

 

 

 

 

 

operation by 60 times faster than normal).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(TEST)/MV

 

T-RUN

 

COM

33

Image 33
Contents 17,500BTU / h 11,900BTU / hSafety Precautions Prohibit Table of Contents STK-RCS-7TWSUA Applicable MULTI-OUTDOOR Units Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeSpecifications Unit SpecificationsIndoor Unit XMS0972 & PNR-XS1872 Indoor Unit XMS0972 & PNR-XS1872208V XMS1272 & PNR-XS1872 XMS1272 & PNR-XS1872 XS1872 & PNR-XS1872 XS1872 & PNR-XS1872 Indoor Unit Major Component SpecificationsIndoor Unit Body XMS0972 Indoor Unit PanelIndoor Unit Body XMS1272 Indoor Unit Body XS1872 ModelKTEC-35-S98 Other Component SpecificationsIndoor heat exchanger sensor ModelPT2M-51H-S3534 Dimensional DataRefrigerant Flow Diagram Refrigerant Flow DiagramIndoor Unit XS1872 & PNR-XS1872 Indoor unit Electrical Data 5250-469008FA2 Disassembly Procedure MaintenanceDisconnect the connectors in the control box Remove the air intake grillRemove the ceiling panel Remove the power box and control box Remove the indoor air temperature sensorScrew Ground cable CN07 ScrewCN03 CN09 CN06 Remove the main body lower section Remove the heat exchanger sensor Remove the drain pump and float switchRemove the heat exchanger Remove the turbo fan and fan motorOperation Functions FunctionsEmergency operation PAM- controlLamp colors Timer backupFreeze prevention Protective FunctionsTroubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Self-diagnostics Lamps Checking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsReplace the controller Replace the circuit board or the fuseBefore the Operation Serial Communication Error Identification ProcedureOff Blinking Illuminated Condition E01Terminal board Outdoor Unit Condition E12 Indoor Fan Motor Trouble Diagnosis of Fan MotorNoise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Locations most susceptible to noise Trouble CorrectionXMS0972 & PNR-XS1872 XMS1272 & PNR-XS1872 Pub. OI-85264181141000 Sanyo Mode D’EMPLOIContents FeaturesInstallation Location Alert SymbolsSafety Instructions Product InformationUnit Display and Operation Button Names of PartsSymbols Remote Control Unit DisplayRemote Control Unit Temperature setting buttons Temp HR. Timer button 1-HOUR OFF TimerMode selector button SensorUsing the Remote Control Unit Operation with the Remote Control Unit Automatic fan speedManual fan speed Cooling and DRY Mode Setting the TimerSpecial Remarks How it works?1030 pm 710 am 1100 am Present time Operation IndicationAdjusting the Airflow Direction Using the 1-HOUR OFF TimerTips for Energy Saving Do notWhen the air conditioner is not running Care and CleaningCleaning the flaps Cleaning the main unit and remote control unitHow to remove the air intake grille How to remove the filterAir filter Care After a prolonged idle periodTroubleshooting Wired Remote ControllerOperating Range XS1872 & PNR-XS1872 Pub. OI-85264181108001 Sanyo XS1271 XS1872OI-108-2-EG Important Multiple use is applied for the model XS1872 only OI-108-4-EG OI-108-5-EG OI-108-6-EG OI-108-7-EG OI-108-8-EG OI-108-9-EG OI-108-10-EG OI-108-11-EG OI-108-12-EG OI-108-13-EG OI-108-14-EG OI-108-15-EG Appendix C Installation Instructions For Indoor Unit ContentsPlease Read Before Starting For safe installation and trouble-free operation, you must…In a Ceiling or Wall …In a RoomAccessories Supplied with Unit Table Tools Required for Installation not suppliedGeneral Optional Copper Tubing KitAdditional Materials Required for Installation Installation Site SelectionH1, H2, H3, H4 Embedding the Tubing and WiringPreparation for Suspending How to Install the Indoor UnitSuspending the Indoor Unit Placing the Unit Inside the CeilingDo not install an air bleeder as Installing the Drain PipingAttach so that the hose band Fastener is on the side10a Checking the DrainageIndoor unit Gaps Ceiling surface Ceiling panel Installing the Ceiling PanelAttaching the air-intake grille Wiring the Ceiling Panel and the IndicatorWhen Removing the Ceiling Panel for Servicing Checking After InstallationAdjusting the Auto Flap Wiring Instructions General precautions on wiringHow to connect wiring to the terminal For Indoor Unit For Outdoor Unit For solid core wiring or F-cableFor stranded wiring How to Test Run the Air Conditioner Rear side Remote control unit mount Remote Control Unit Installation PositionTo take out the remote control unit, pull it forward Mounting on a WallAddress Setting of the Remote Control Unit Address SwitchInstallation Check Sheet Connecting a Home Automation DeviceSTK-RCS-7TWSUA Pub. OI-85264181139000 Sanyo STK-RCS-7TWSUADo not cool or heat the room too much Hot Start Heating System SET button Timer and Present Time setting buttonsAuto Timer Select buttonAutomatic Operation Only for COOL/DRY/HEAT Model Heating Mode Only for COOL/DRY/HEAT Model Remote Control Unit DisplayProgrammed Daily on / OFF910 pm 710 am 1130 pm Present time Sweep Cool Drysweep Heat FAN Appendix E Installation Instructions STK-RCS-7TWSUA Remote controller installation guidelines Parts supplied with the remote controllerHow to install the remote controller Installation locationInstalling directly onto the wall Installing with in-wall junction boxHow to wire the remote controller ON/OFF

XMS1272, XMS0972 specifications

The Sanyo XMS0972 and XMS1272 are remarkable air conditioning units that blend efficiency with cutting-edge technology. Designed for residential and commercial spaces, these models promise comfort while optimizing energy consumption.

One of the standout features of both the XMS0972 and XMS1272 is their advanced inverter technology. This feature allows the units to adjust their cooling capacity based on the room's ambient temperature. As a result, the air conditioners can maintain a consistent temperature without the frequent on/off cycles associated with traditional units. This not only ensures a more stable climate but also significantly reduces energy consumption, making them eco-friendly options.

Another significant characteristic is the Quiet Operation mode. Both models are engineered with noise reduction technology, providing a tranquil environment for users. This is particularly beneficial for bedrooms, offices, or libraries where noise levels can be a concern. The XMS models operate at a whisper-quiet level, allowing users to focus on their tasks or enjoy a peaceful night's sleep without disruption.

The Sanyo XMS0972 and XMS1272 also feature a user-friendly digital interface. With an intuitive remote control and an easy-to-read display, setting your desired temperature or switching modes has never been easier. Moreover, the smart diagnostic capability allows for quick troubleshooting, helping to identify any issues to ensure peak performance throughout their lifespan.

Both models are equipped with a 24-hour timer, adding convenience for users who wish to come home to a pre-cooled or heated environment. This feature enhances comfort and saves energy when the unit is not in use.

In terms of design, the Sanyo XMS units boast a sleek and modern aesthetic that seamlessly integrates into various interior styles. Their compact size allows for flexible installation options, making them suitable for various living and working spaces.

The XMS line also emphasizes air purification, incorporating advanced filters that capture dust, allergens, and other pollutants. This results in not just temperature control but also improved air quality, contributing to a healthier living environment.

In conclusion, the Sanyo XMS0972 and XMS1272 air conditioning units stand out for their energy efficiency, quiet operation, user-friendly features, and air purification capabilities. These characteristics make them an ideal choice for individuals and businesses looking for reliable and sophisticated climate control solutions.