Sanyo XMS0972, XMS1272 service manual Protective Functions, Freeze prevention

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7-2. Protective Functions

Freeze prevention

During COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below.

1.Freeze-prevention operation is engaged when the temperature of the indoor heat exchanger is below 43°F(6°C).

2.Restart after freeze-prevention operation occurs when the temperature of the indoor heat exchanger reaches 46°F(8°C) or above.

exchanger

46

 

 

 

C

 

 

 

 

 

°F(°C)

(8)

 

A

B

 

 

 

 

temperature

43

 

 

(6)

 

 

 

 

heat

36

 

 

 

 

Indoor

*

 

 

 

(2)

 

 

 

 

 

 

 

 

 

 

a

b

c

d

a.Area: Automatic capacity control

b.When the temperature drops below Point A, the operation frequency is reduced by a certain proportion.

c.Area: Frequency increase is prohibited.

d.When the temperature reaches Point C or above, freezing prevention is ended and control is the same as in the a area.

*When the temperature drops to below 36°F(2°C) (continuously for 2 minutes or longer), the compressor stops. Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off.

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Contents 11,900BTU / h 17,500BTU / hSafety Precautions Prohibit Table of Contents STK-RCS-7TWSUA Applicable MULTI-OUTDOOR Units Operating Range Indoor Air Intake Temp Outdoor Air Intake TempSpecifications 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 Body XMS0972 Major Component SpecificationsIndoor Unit Indoor Unit PanelIndoor Unit Body XMS1272 Indoor Unit Body XS1872 Indoor heat exchanger sensor Other Component SpecificationsModelKTEC-35-S98 ModelPT2M-51H-S3Dimensional Data 534Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor Unit XS1872 & PNR-XS1872 Indoor unit Electrical Data 5250-469008FA2 Disconnect the connectors in the control box MaintenanceDisassembly Procedure Remove the air intake grillRemove the ceiling panel Remove the indoor air temperature sensor Remove the power box and control boxScrew Ground cable CN07 ScrewCN03 CN09 CN06 Remove the main body lower section Remove the drain pump and float switch Remove the heat exchanger sensorRemove the turbo fan and fan motor Remove the heat exchangerEmergency operation FunctionsOperation Functions PAM- controlTimer backup Lamp colorsProtective Functions Freeze preventionTroubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Self-diagnostics Lamps Replace the controller Using the TEST/T-RUN terminalsChecking the Indoor and Outdoor Units Replace the circuit board or the fuseOff Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Trouble Diagnosis of Fan Motor Indoor Fan MotorElectromagnetic interference Noise Malfunction and Electromagnetic InterferenceNoise malfunction Locations most susceptible to noise Trouble CorrectionXMS0972 & PNR-XS1872 XMS1272 & PNR-XS1872 Mode D’EMPLOI Pub. OI-85264181141000 SanyoFeatures ContentsSafety Instructions Alert SymbolsInstallation Location Product InformationNames of Parts Unit Display and Operation ButtonRemote Control Unit Display SymbolsRemote Control Unit Mode selector button HR. Timer button 1-HOUR OFF TimerTemperature setting buttons Temp SensorUsing the Remote Control Unit Operation with the Remote Control Unit Automatic fan speedManual fan speed Special Remarks Setting the TimerCooling and DRY Mode How it works?Operation Indication 1030 pm 710 am 1100 am Present timeTips for Energy Saving Using the 1-HOUR OFF TimerAdjusting the Airflow Direction Do notCleaning the flaps Care and CleaningWhen the air conditioner is not running Cleaning the main unit and remote control unitAir filter How to remove the filterHow to remove the air intake grille Care After a prolonged idle periodTroubleshooting Wired Remote ControllerOperating Range XS1872 & PNR-XS1872 XS1271 XS1872 Pub. OI-85264181108001 SanyoOI-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 Contents For Indoor Unit…In a Ceiling or Wall For safe installation and trouble-free operation, you mustPlease Read Before Starting …In a RoomGeneral Tools Required for Installation not suppliedAccessories Supplied with Unit Table Optional Copper Tubing KitInstallation Site Selection Additional Materials Required for InstallationEmbedding the Tubing and Wiring H1, H2, H3, H4Suspending the Indoor Unit How to Install the Indoor UnitPreparation for Suspending Placing the Unit Inside the CeilingAttach so that the hose band Installing the Drain PipingDo not install an air bleeder as Fastener is on the sideChecking the Drainage 10aInstalling the Ceiling Panel Indoor unit Gaps Ceiling surface Ceiling panelWiring the Ceiling Panel and the Indicator Attaching the air-intake grilleAdjusting the Auto Flap Checking After InstallationWhen Removing the Ceiling Panel for Servicing 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 To take out the remote control unit, pull it forward Remote Control Unit Installation PositionRear side Remote control unit mount Mounting on a WallAddress Switch Address Setting of the Remote Control UnitConnecting a Home Automation Device Installation Check SheetSTK-RCS-7TWSUA STK-RCS-7TWSUA Pub. OI-85264181139000 SanyoDo not cool or heat the room too much Hot Start Heating System Timer and Present Time setting buttons SET buttonTimer Select button AutoAutomatic Operation Only for COOL/DRY/HEAT Model Remote Control Unit Display Heating Mode Only for COOL/DRY/HEAT ModelProgrammed Daily on / OFF910 pm 710 am 1130 pm Present time Sweep Cool Drysweep Heat FAN Appendix E Installation Instructions STK-RCS-7TWSUA How to install the remote controller Parts supplied with the remote controllerRemote controller installation guidelines Installation locationInstalling with in-wall junction box Installing directly onto the wallHow 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.