Carrier 38MVQ, 40MVQ service manual Wiring Diagram 38MVC018----3 W/ 40MVC018----3

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WIRING DIAGRAMS (CONT.)

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Fig. 9 – Wiring Diagram 38MVC018----3 W/ 40MVC018----3

38/40MVC, MVQ

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Contents Introduction 38MVC/40MVC 38MVQ/40MVQIndoor Unit Model Number NomenclatureStandard Features and Accessories System Model Number Specifications Cooling only UnitsCoil Outdoor Specifications Heat Pump UnitsService Valve Locations Clearances Indoor System Operating Envelope 53MVC/MVQ System Operating Envelope ChartElectrical Data Connection Diagrams Connection DiagramsWiring Diagram 38MVC009----1 W/ 40MVC009----1 Wiring DiagramsWiring Diagram 38MVC012----1 W/ 40MVC012----1 Wiring Diagram 38MVC012----3 W/ 40MVC012----3 Wiring Diagram 38MVC018----3 W/ 40MVC018----3 Wiring Diagram 38MVQ009----1 W/ 40MVQ009----1 Wiring Diagram 38MVQ012----1 W/ 40MVQ012----1 Wiring Diagram 38MVQ012----3 W/ 40MVQ012----3 Cooling Refrigeration Cycle DiagramGeneral refrigerant line sizing Refrigerant LinesRefrigerant Charge System Evacuation and Charging Using Vacuum PumpControl System Minute Time DelaySystem Safeties Compressor Overcurrent ProtectionIndoor High Temperature Protection Condenser High Temperature ProtectionSequence of Operation Indoor Coil Freeze ProtectionModes of Operation Defrost Auto FanManual Operation Dry Dehumidification ModeForced Cooling Operation Diagnostic Hierarchy TroubleshootingRequired Tools Recommended StepsYes Chart 1 Indoor FAN Speed OUT of ControlChart 2 Temperature Sensor Chart 3 Compressor Overcurrent Protection Chart 4 Indoor Unit Communication Error Size 9K and 12K Chart 5 Outdoor Unit Protects Chart 6 Indoor Unit Communication Error Size 18K and 24K Chart 7 Unit not RUNNING, no Diagnostic Code Chart 8 Unit not Running Optimally Chart 9 Unit not Running Optimally HP in Heating Chart 10 Compressor Chart 11 Outdoor Motor Chart 13 Receiver Board Chart 12 Reversing ValveAppendix Appendix Table of Contents Description NumberInput or Output Value 38MVC009--- --- ---1/38MVC012--- --- ---1 Control Board40MVC009--- --- ---1/40MVC012--- --- ---1 Control Board 38MVQ009---1/38MVQ012--- --- ---1 Control Board40MVC012--- --- ---3 Control Board 38MVC012--- --- ---3 Control Board38MVQ012--- --- ---3 Control Board 40MVQ012--- --- ---3 Control BoardControl Board 38MVC018--- --- ---3 Control BoardTemp. ˚F/˚C Resistance KΩ A6 Characteristics of Temperature Sensor18K & 24K Units 9K & 12K UnitsCatalog No.38---40MV---1SM
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40MVQ, 40MVC, 38MVQ, 38MVC specifications

The Carrier 38MVC, 38MVQ, 40MVC, and 40MVQ are advanced air-conditioning systems designed for both residential and commercial applications. These units are recognizable for their commitment to efficiency, reliability, and comfort, making them ideal choices for various environments.

One of the standout features of these models is their high energy efficiency ratings. Both the 38MVC and 38MVQ boast Seasonal Energy Efficiency Ratios (SEER) that exceed industry standards, delivering substantial energy savings over time. The 40MVC and 40MVQ models also continue this trend, featuring enhanced efficiency that translates into lower utility bills and a reduced carbon footprint.

These air-conditioning units utilize Carrier's innovative inverter technology, which allows for variable speed operation. This means that the compressor can adjust its speed according to the cooling demand, resulting in smoother temperature control and less energy consumption. The inverter technology not only maximizes comfort but also contributes to quieter operation, as the systems can run at lower speeds when full capacity is not required.

In addition to efficiency, the Carrier 38MVC, 38MVQ, 40MVC, and 40MVQ are equipped with advanced filtration systems. These systems work to purify the air by reducing allergens and pollutants, ensuring a healthier indoor environment. Some models also come equipped with smart connectivity options, allowing users to control their air conditioning remotely via a smartphone app. This feature adds convenience and helps monitor energy usage effectively.

With durable construction and high-quality components, these units are designed to withstand the test of time, reducing the need for frequent repairs or replacements. They are also built to operate quietly, so they can provide comfort without disturbing the peace of the indoor environment.

In terms of installation flexibility, the Carrier 38MVC, 38MVQ, 40MVC, and 40MVQ can be easily integrated into various existing HVAC systems, thanks to their compatible size and design. This adaptability makes them suitable for a wide range of applications, from small residential homes to larger commercial spaces.

Overall, the Carrier 38MVC, 38MVQ, 40MVC, and 40MVQ models are engineered with cutting-edge technologies that prioritize efficiency, comfort, and ease of use, making them an excellent choice for those looking to enhance their indoor climate control solutions.