Sanyo XHS3632, XHS2432, CH2432, CH3632 service manual Cold Draft Prevention Heating Cycle

Page 28

2. Processes and functions

Section

1

2

3

4

2-2 Cold Draft Prevention (Heating Cycle)

The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up.

STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF. This condition occurs in the following 3 cases:

During Thermo OFF (refer to 2-1 B). Room Temperature Control, Heating)

During the defrosting operation (refer to 2-10 Defrosting Control, Heating)

Until either the coil temperature E2 reaches 81°F or when a maximum of 6 minutes has past.

The indoor fan motor operates in L instead of LL for 3 seconds as it starts to give the fan an initial boost.

 

 

 

92

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MAX. 6 MINUTES

 

 

 

 

 

INDOOR UNIT

88

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COIL TEMP.

 

 

 

 

 

 

 

 

 

 

 

 

 

E2 (°F)

81

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

77

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SET

 

AUTO OR H

LL

 

LL/OFF

LL

L

 

M

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAN

 

 

M

LL

 

LL/OFF

LL

L

 

M

 

M

SPEED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

LL

 

LL/OFF

LL

L

 

L

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“STANDBY”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“STANDBY” APPEARS

 

 

 

 

 

 

INDICATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LL= Very low speed

 

M= Medium speed

 

 

 

 

 

 

 

 

L= Low speed

 

 

H= High speed

1135_THS_I

Fig. 3

Chart Summary and Explanations

The main idea of this chart is to show that the indoor fan speed increases and gets closer to the set fan speed as the coil temperature E2 rises.

The indoor unit’s coil temperature is taken from sensor E2 located in the middle of the indoor heat exchange coil.

The dotted line shows that the indoor fan motor is OFF. When the temperature at sensor E2 falls below 50°F, the indoor fan motor stops running.

SM830076

– 28 –

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Contents Split System AIR Conditioner Please Read Before Starting If Necessary, Get HelpWHO should USE this Manual Table of Contents Service Procedures Introduction Read Me First Specifications Specifications Unit Specifications PerformanceData Subject to Change Without Notice Model No Indoor Unit XHS3632 Outdoor Unit PNR-XHS3632 Specifications Major Component Specifications Indoor Unit Fan motorModel No XHS3632 Source Specifications Major Component Specifications Outdoor Unit CompressorModel No CH3632 Source Specifications Other Component Specifications Indoor Unit Model No XHS2432 Power TransformerXHS3632 Power Transformer Specifications Other Component Specifications Outdoor Unit Model No CH2432Model No CH3632 Specifications Dimensional Data Indoor Unit XHS2432 Specifications Dimensional Data Indoor Unit XHS3632 Dimensional Data Outdoor Unit CH2432 SpecificationsSpecifications Dimensional Data Outdoor Unit CH3632 Operating Range Specifications Refrigerant Flow Diagram Outdoor Unit CH2432Indoor Unit XHS2432 Specifications Refrigerant Flow Diagram Outdoor Unit CH3632 Indoor Unit XHS3632Processes and1.Specificationsfunctions Processes and FunctionsProcesses and functions Room Temperature ControlCooling Heating Cold Draft Prevention Heating Cycle Chart Explanations and notes Automatic Fan Speed Indoor UnitOutdoor Fan Speed Control Freeze Prevention Cooling Condensing Temperature Control Cooling Overload Protection Heating This function prevents the air conditioner from overloadingDischarge Temperature Control Cooling and Heating Auto. Mode for Automatic Heating/Cooling Switching Processes and functions Time Chart for Defrosting Defrosting Control, Outdoor Heat Exchanger Coil HeatingNormal Control Mode 11 4-Way Valve, Solenoid ControlAutomatic Restart after Power Interruption Auto Control ModeCompressor Discharge Gas Temperature Electronic Expansion ValveHeating Except During Defrosting Fuzzy ControlCompressor Current Detection Circuit Overload ProtectionContents and Order of control Electronic Expansion Valve ControlRefrigerant flow distribution control Fuzzy control optimal refrigerant flow rate controlVoltage Detection Control Processes and functions Electrical Data Electrical dataIndoor Unit XHS2432, XHS3632Schematic Diagram CH2432 OutdoorUnitOutdoor Unit ControllerElectric Wiring Diagram CH3632FMO1 FMO2 Electrical data Service Procedures Service proceduresTroubleshooting This section explainsService procedures Check before and after Troubleshooting Check power supplyCheck power supply wiring Check inter-unit wiringCooling Service procedures Heating Meanings of alarm messages Controller DisplayWireless remote Controller Display Refrigerant Shortage Service procedures Symptoms and parts to inspect SM830076 0335MI Influenced by external noise Yes Start Is there connector contact defect? Correct the connection 0343MI Symptom LCD on the remote controller displays Check E15 Symptom LCD on the remote controller displays Check E16 0346MI Indoor fan does not operate Compressor motor does not operate Set service check switches Service procedures Use the test run procedure Service procedures Check the sensor temperature readings Find out about past service problems SET Temp Check the remote controller itself for correct operation Service procedures Execute the auto. address operation 0362MI 0364MI Change the shift temperature in heating mode Service procedures Set the indoor unit address Set the No. of R. C. which you want to set with , button 0371MI Service procedures Change the period of the filter timer Checking the Electrical Components Measurement of Insulation ResistanceChecking the Protective Devices Compressor motor thermal protector . . . . . . Outdoor unitService procedures Checking the Electrical Parts Power transformer TR1Motor capacitor ............ Both in indoor and outdoor unit Continuity of fuse on P.C.B. Ass’yCase of single -phase compressor Solenoid coil of the electronic refrigerantCompressor motor CM ……… Outdoor unit Compressor motor magnetic contactor 52C ………… Outdoor unitService procedures Sensor and Solenoid Layout Diagram CH2432XHS3632 Service procedures Thermistor Characteristic Curve Service procedures C.B. Setting Central control when using the *system controllerSetting of indoor control P.C.B Standard control single outdoor unitBoth OFF Set to When shipped from factory Service procedures Automatic Address Setting Method Displaying Indoor / Outdoor Unit Combination NumbersItems to Check Prior to Test Run Service procedures Test Run 100 Test Run Procedure Service procedures 12 P.C.B. and Parts Location CR-THS2432CR-CH2432 Checking procedure for each P.C.B Service procedures Check Pins Switch the pin from normal operation to check operationCentral Region
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XHS3632, XHS2432, CH3632, CH2432 specifications

The Sanyo CH3632 is a cutting-edge air conditioning unit that exemplifies efficiency and innovation in climate control technology. Designed primarily for residential use, this model has attracted attention due to its combination of powering performance and user-friendly features.

One of the standout characteristics of the Sanyo CH3632 is its energy efficiency. With a high Seasonal Energy Efficiency Ratio (SEER), the unit consistently delivers cooling while minimizing energy consumption. This not only reduces monthly electricity bills but also contributes positively to environmental sustainability. Its environmentally friendly refrigerant further emphasizes Sanyo's commitment to eco-conscious designs.

The unit employs advanced inverter technology, which allows for variable-speed compressor operation. This means that instead of turning on and off, the compressor adjusts its speed based on the cooling needs of the space. This creates a more stable and comfortable indoor environment while ensuring quieter operation. The reduced noise levels make the CH3632 an excellent choice for bedrooms and living spaces where peace and tranquility are essential.

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Smart features are also integral to this model. The Sanyo CH3632 can be integrated with smart home systems, allowing users to control temperature settings via mobile apps or voice commands. This connectivity makes it convenient to manage cooling preferences from anywhere in the house, adding a layer of modern convenience to home comfort.

Installation of the Sanyo CH3632 is straightforward and can often be completed without extensive modifications to existing structures. Its sleek design allows it to blend seamlessly into various home aesthetics, making it an attractive addition to any space.

In summary, the Sanyo CH3632 is a highly efficient air conditioning unit that incorporates advanced technologies for optimal performance. With eco-friendly features, smart connectivity, and an emphasis on air quality, it sets a high standard for comfort in residential air conditioning solutions.