Mitsubishi Electronics PKA-A30KA4.TH, PKA-A36KA4.TH Refrigerant System Diagram, Heat exchanger

Page 11

8 REFRIGERANT SYSTEM DIAGRAM

PKA-A24KA4.TH PKA-A30KA4.TH PKA-A36KA4.TH

Strainer (#50)

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Thermistor TH2			Refrigerant flow in cooling

Pipe temperature(Liquid)			Refrigerant flow in heating

Thermistor TH5


(Cond./ Eva.temperature)				Refrigerant LIQUID pipe connection
(Cond./ Eva.temperature)				Refrigerant LIQUID pipe connection
	Thermistor TH1			(Flare)


	(Room temperature)
	(Room temperature)		Strainer (#50)
		Distributor	Strainer (#50)
		Distributor
		with strainer (#50/#100)

Image 11

Contents Parts Catalog OCB488 ContentsRevised EDITION-A Reference Manual Remote controller Optional partsAlways Observe for Safety Safety PrecautionFront grille When charging directly from cylinderPart Names and Functions Operation Section Display SectionTimer display Operation Mode displayMode Select button Temperature setting displayService Ref SpecificationsPKA-A24KAL PKA-A30KAL Noise Criterion CurvesPKA-A24KA4.TH PKA-A30KA4.THUnit inch mm Outlines and DimensionsPKA-A24KA4.TH PKA-A30KA4.TH PKA-A36KA4.TH Explanation of symbols Wiring DiagramHeat exchanger Refrigerant System DiagramAccording to 9-4. Troubleshooting by inferior phenomena TroubleshootingTroubleshooting Case of trouble during operation MALFUNCTION-DIAGNOSIS Method by Remote ControllerProcedure Wired remote controllerU9,UH Remote controller wire short Wired remote controller LED 1, 2 PCB in outdoor unitUnit’s power terminal block L1, L2, GR Appear even when operationSELF-DIAGNOSIS Action Table Operating Pipe temperatureCondenser-Evaporator TH5 Cause Countermeasure Pipe temperature thermistorRemote controller transmission ErrorE0/signal receiving errorE4Indoor/outdoor unit communication Error Signal receiving errorError Transmitting error Remote controller control boardController Troubleshooting by Inferior PhenomenaPhenomena Cause Countermeasure 1Upward/downward vane Performance failureCooling Only type When the remote controller cannot be usedEmergency Operation Heat pump typeThermistor TH5 Lower temperatureCondenser/evaporator temperature ThermistorDC Fan motor fan motor/indoor controller circuit board Sensor signal checkTest Point Diagram Functions of DIP Switch and Jumper Wire System constraint Special FunctionOperation Rotation function and Back-up function Outline of functions2nd unit Cut-out Request Code ListRotation setting 2nd stage cut-in settingOutline of functions How to connectSetting method of each function by wired remote controller BACK-UP Heating Function CN152Photo Disassembly ProcedureOperation Procedure Photos & Illustrations Be careful when removing heavy partsVane Motor and Drain Hose Operation Procedure PhotosRemoving the Nozzle Assembly with Vane Remove the liquid pipe thermistor and cond / eva thermistor Disconnect the connector CN44 on the indoor controllerRemove the panel and the corner box. Refer to step Remove the screw fixing motor band. See PhotoDisconnect the connector CN20 on the indoor controller Board Remove the room temperature thermistor

PKA-A36KA4.TH, PKA-A30KA4.TH, PKA-A24KA4.TH specifications

Mitsubishi Electronics introduces its PKA series of commercial air conditioners, comprising models PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH. These units are designed to meet the growing demand for energy-efficient and reliable climate control solutions in commercial spaces. Each model in the series is equipped with advanced features that set them apart in the competitive air conditioning market.

One of the main features of the PKA series is the innovative inverter technology. This technology enables the air conditioning units to adjust their cooling or heating output according to the indoor temperature, leading to significant energy savings. By operating at varying speeds rather than a constant rate, the inverter system provides a more consistent and comfortable environment while reducing energy consumption by up to 30% compared to traditional fixed-speed systems.

Another standout characteristic of the PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH models is their compact design. These units are designed for easy installation in various commercial settings while taking up minimal space. This is particularly beneficial for businesses looking to optimize their floor space without compromising climate control efficiency.

The PKA series features advanced filtration technology, including a highly efficient air purification system. This enhances indoor air quality by removing dust, allergens, and other airborne pollutants, creating a healthier environment for occupants. The inclusion of a self-cleaning function also contributes to maintenance ease, as the unit automatically cleans the heat exchanger, preventing dust buildup and ensuring efficient operation.

Mitsubishi's commitment to whisper-quiet operation is another critical feature of these models. They are engineered to operate at sound levels as low as 19 dB(A), making them ideal for environments where noise control is essential, such as offices, hotels, or healthcare facilities.

Moreover, the PKA series is compatible with Mitsubishi's sophisticated control systems, allowing users to manage their air conditioning remotely via smartphone or tablet. This level of control enhances user convenience and maximizes system efficiency by enabling real-time adjustments based on occupancy and other factors.

Overall, the Mitsubishi Electronics PKA-A24KA4.TH, PKA-A30KA4.TH, and PKA-A36KA4.TH units represent a perfect blend of modern technology and user-centric design, providing businesses with effective, efficient, and quiet climate control solutions. With their advanced features, energy-saving capabilities, and emphasis on air quality, these models stand out as premier choices for managing environmental comfort in commercial applications.