Mitsubishi Electronics PKA-A24KA4.TH, PKA-A36KA4.TH Wiring Diagram, Explanation of symbols

Page 10

7 WIRING DIAGRAM

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

[Explanation of symbols]

 

Symbol

Name

I.B

Indoor controller board

 

CN2L

Connector (LOSSNAY)

 

CN30

Connector (LLC)

 

CN32

Connector ( Remote switch)

 

CN41

Connector (HA terminal-A)

 

CN51

Connector (Centrally control)

 

CN90

Connector (Remote operation adapter)

 

CN105

Connector (Radio frequency interface)

 

CN152

Connector (Back-up heating)

 

FUSE

FUSE (T3.15AL250V)

 

LED1

Power supply (I.B)

 

LED2

Power supply (R.B)

 

LED3

Transmission (Indoor-outdoor)

 

SW1

Switch (Model selection) +See table 1

 

SW2

Switch (Capacity code) +See table 2

 

SWE

Connector (Emergency operation)

R.B

Wired remote controller board

 

TB6

Terminal block (Remote controller transmission line)

 

Symbol

Name

M

Vane motor

MS

Fan motor

S.W

Switch board

 

SWE2

Emergency operation

TB2

Terminal block(Indoor unit Power (option))

TB4

Terminal block (Indoor/outdoor connecting line)

TB5

Terminal block (Remote controller transmission line)

TH1

Room temp. Thermistor

 

 

(32°F/15kΩ, 77°F/5.4kΩ Detect)

TH2

Pipe temp. Thermistor/liquid

 

 

(32°F/15kΩ, 77°F/5.4kΩ Detect)

TH5

Cond./eva. temp. Thermistor

 

 

(32°F/15kΩ, 77°F/5.4kΩ Detect)

W.B

Pcb for IR wireless remote controller

 

LED1

LED (Operation indication : Green)

 

LED2

LED (Preparation for heating: Orange)

 

REC1

Receiving unit

RFI

Radio frequency interface for RF thermostat

 

RFI

 

 

 

 

 

 

MS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

3~

 

 

 

 

 

 

 

I.B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

CNMF 6

 

 

 

TB4

<+1>

 

 

CN105

 

 

 

 

DB1

(WHT)

FUSE

1

YLW

YLW

TO

 

 

(RED)

 

 

 

 

 

 

 

S1

 

 

 

 

 

 

 

 

 

 

 

3

ORN

ORN

S2

OUTDOOR

 

 

 

 

 

 

 

 

 

CN01

5

 

 

S3

UNIT

 

SWE

 

 

 

 

LED1

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

(BLK)

 

 

 

 

 

 

ON

 

 

 

 

LED3

 

 

3

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1

1

 

ORN

 

 

 

 

 

 

 

 

 

LED2

 

 

 

 

 

 

 

 

 

 

 

 

CNP (BLU)

 

BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

CN3C 3

 

 

S.W

 

 

 

 

1

 

CN90

9

 

1 CN32 3

 

(BLU) 1

 

 

 

 

 

 

 

 

 

 

LDSWE (A)

 

2

LDSWE(B) SWE2

 

 

 

 

 

 

(WHT)

 

 

(WHT)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to

 

 

 

 

 

 

 

 

(BLU)

 

 

W.B

 

 

 

 

1

2

1

4

 

1

5

1

 

 

1

RU

 

 

tables

 

CN2L

CN41

 

CN51

 

 

 

 

 

REC1

 

 

1and 2

 

(RED)

(WHT)

 

(WHT)

 

CNRU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(WHT)

 

 

 

LED1

 

 

1

 

 

 

10

1 CN30 3

 

 

 

 

 

 

 

 

 

CN152

 

 

 

 

 

6

 

 

6

 

 

 

 

(WHT)

 

 

 

(BLK)

 

 

 

 

 

 

CN301

LED2

 

 

CN151

 

CN20

CN44

 

CN4F

 

 

 

 

(GRN)

 

 

 

 

 

 

 

 

 

 

 

R.B

 

(WHT)

5

(RED)

(WHT)

1

(WHT)

 

 

 

 

 

 

 

1

1

2

1

4

4

 

CN22 1

 

2

 

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(BLU) 2

 

 

 

2

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TB5

TB6

 

M

 

 

 

 

 

 

 

 

 

 

 

 

 

OPTION PART

t° TH1

t° TH2 t°TH5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

<Table 1>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW1

 

 

 

<Table 2>

 

 

 

 

 

 

 

 

 

 

(MODEL SELECTION)

SW2 (CAPACITY CODE)

 

 

 

 

 

 

 

SETTING

 

 

MODELS

SETTING

MODELS

SETTING

MODELS

SETTING

1 2 3 4 5 ON

PKA-A24KA4

1 2 3 4 5 ON

PKA-A30KA4

1 2 3 4 5 ON

PKA-A36KA4

1 2 3 4 5 ON

OFF

 

OFF

 

OFF

 

OFF

The black square (■) indicates a switch position.

Notes:

1.SymboIs used in wiring diagram above are, : Connector, : Terminal (block).

2.Indoor and outdoor connecting wires have poIarities, make sure to match terminal numbers (S1, S2, S3) for correct wirings.

3.Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric wiring diagram for servicing.

4.This diagram shows the wiring of indoor and outdoor connecting wires.(specification of 230V), adopting superimposed system of power and signal.

+1: Use copper supply wires.

10

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Page 9 Page 11
Contents Revised EDITION-A ContentsParts Catalog OCB488 Remote controller Optional parts Reference ManualSafety Precaution Always Observe for SafetyPart Names and Functions When charging directly from cylinderFront grille Display Section Operation SectionTemperature setting display Operation Mode displayMode Select button Timer displaySpecifications Service RefPKA-A30KA4.TH Noise Criterion CurvesPKA-A24KA4.TH PKA-A24KAL PKA-A30KALPKA-A24KA4.TH PKA-A30KA4.TH PKA-A36KA4.TH Outlines and DimensionsUnit inch mm Wiring Diagram Explanation of symbolsRefrigerant System Diagram Heat exchangerTroubleshooting TroubleshootingAccording to 9-4. Troubleshooting by inferior phenomena Wired remote controller MALFUNCTION-DIAGNOSIS Method by Remote ControllerProcedure Case of trouble during operationU9,UH Appear even when operation Wired remote controller LED 1, 2 PCB in outdoor unitUnit’s power terminal block L1, L2, GR Remote controller wire shortSELF-DIAGNOSIS Action Table Pipe temperature OperatingErrorE0/signal receiving errorE4 Cause Countermeasure Pipe temperature thermistorRemote controller transmission Condenser-Evaporator TH5Remote controller control board Error Signal receiving errorError Transmitting error Indoor/outdoor unit communicationPerformance failure Troubleshooting by Inferior PhenomenaPhenomena Cause Countermeasure 1Upward/downward vane ControllerHeat pump type When the remote controller cannot be usedEmergency Operation Cooling Only typeThermistor Lower temperatureCondenser/evaporator temperature Thermistor TH5Sensor signal check DC Fan motor fan motor/indoor controller circuit boardTest Point Diagram Functions of DIP Switch and Jumper Wire Rotation function and Back-up function Outline of functions Special FunctionOperation System constraint2nd stage cut-in setting Request Code ListRotation setting 2nd unit Cut-outBACK-UP Heating Function CN152 How to connectSetting method of each function by wired remote controller Outline of functionsBe careful when removing heavy parts Disassembly ProcedureOperation Procedure Photos & Illustrations PhotoRemoving the Nozzle Assembly with Vane Operation Procedure PhotosVane Motor and Drain Hose Remove the screw fixing motor band. See Photo Disconnect the connector CN44 on the indoor controllerRemove the panel and the corner box. Refer to step Remove the liquid pipe thermistor and cond / eva thermistorRemove the room temperature thermistor Disconnect the connector CN20 on the indoor controller Board

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.
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