Kaisai KMS-8243 Operating instructions

Hello! I've reviewed the technical manual for the KA8243 Inverter Condensing Unit Control Module. This document outlines the device's features, such as its 0-10V analog input for capacity control, digital inputs for cooling and heating modes, and LED indicators for operation status. I'm ready to answer your questions about this device.
What voltage range can the 0-10V analog input signal have?

What happens if both COOL and HEAT terminals are closed?

What does error code E1 mean?

What does error code Ed mean?

What does error code dF mean?

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InverterCondensingUnit

ControlModule

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TechnicalManual

Model:KA8243

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refrigerant pipes

PQE signal

communication with

outdoor unit

heating

cooling

0-10V

Heat exchanger

L N Power supply 230V

Alarm

Defrost

KA8243

400V,50H,3Ph+T

0‐10V‐‐‐analoginputterminaltocontroloutdoorunitcapacity.Warning:signalinputcannot

exceed10.5VDC,otherwiseitmaydestroythiscontrolmodule.

Capacitysteps:

0‐0.5V0%(unitstopped)

0.5‐1.5V,10%capacity(LEDdisplaydigit1)

1.5‐2.5V,20%capacity(LEDdisplaydigit2)

...

9.5‐10.5V,100%capacity(LEDdisplaydigit10)

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COOL‐‐‐digitalinput.Whenterminalsareclosed,theunitwillrunincoolingmodeand"COOL"

LEDwillbeon.

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HEAT‐‐‐digitalinput.Whenterminalsareclosed,theunitwillruninheatingmodeand"HEAT"

LEDwillbeon.

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Note:HEATsignalhasthepriority.IfbothCOOLandHEATterminalsareclosed,unitwillrunin

HEATmode.

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ENC1‐knobtoselectcondensingunitmodel.

KnobselectionCondensingunit

05,3kWunit

17,1kWunit

29,0kWunit

310,5kWunit

414,0kWunit

516,0kWunit

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LEDlampsintroduction:

RUNLEDislightenedwhencontrollerispoweredon.

HEATLEDislightenedwhentheunitisoperatinginheatingmode.

COOLLEDislightenedwhentheunitisoperatingincoolingmode.

DEFLEDislightenedwhenunitisindefrostmode

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4. MalfunctionandErrorCode

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E1‐‐‐communicationerrorwithoutdoorunit

Ed‐‐‐outdoorunittemperaturesensormalfunctionoroutdoorunitprotection.Inthiscase,check

theerrorcodedisplayedonthePCBoftheoutdoorunit.

dF‐‐‐outdoorisdefrosting.

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Kaisai KMS-8243 Operating instructions

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