Mitsubishi Electronics PKA-A24KA4.TH service manual BACK-UP Heating Function CN152, How to connect

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(2) Setting method of each function by wired remote controller

 



 

B: Refrigerant address



C: Data display area

D: Request code display area

 



 

 



 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Stop operation( ).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Press the

TEST

 

button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ().

 

After a while, [00] appears in the refrigerant address number display area.(at  )

3.

Press the

CHECK

 

button ( ) for 3 seconds to switch to [Maintenance monitor].

 

Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode

 

(i.e., while “----” is blinking) since no buttons are operative.

 

[----] appears on the screen () when [Maintenance monitor] is activated.

 

(The display () now allows you to set a request code No.)

4.

Press the [TEMP (

 

 

 

and

 

 

)] buttons () to select the desired refrigerant address.

 

[ScreenB]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 



 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Press the [CLOCK (

 

 

 

and

 

 

)] buttons () to set the desired request code No.(“311~318”, “321~324”)

6.

Press the

FILTER

button () to perform function setting.

If above setting operations are done correctly, "Request code number" will appear in data display area.() [Example: When the "311" of "Request code number" is set, [311] appears on the screen.()]

[Refererence]

You can check current "request code number" setting by setting the "request code number"(“310” or “320”) and pressing the FILTER button.()

[Example: When the current setting is "Setting No.2(Request code 311)", [311] appears on the screen.()]

7. To return to normal mode, press the ON/OFF button ( ).

10-2. BACK-UP HEATING FUNCTION (CN152)

10-2-1. Operation

Outline of functions

The back-up heater signal is sent out according to the tempera- ture difference between indoor room temperature and set tem- perature. This function is available only in heating operation.

10-2-2. How to connect

When connecting to the connector CN152 of the indoor unit, use PAC-SE59RA-E (optional parts).

 

 

Temperature difference

 

Back-up heater

 

 

(Z=Set temp. - Room temp.)

 

signal output

 

 

 

 

 

 

 

 

 

1

 

 

 

Z 0˚C(˚F)

 

 

OFF

2

 

0 < Z < 2.5˚C(4.5˚F)

 

Keeping condition

3

 

 

2.5˚C(4.5˚F) Z

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

Z

0

2.5˚C(4.5˚F)

 

 

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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 SectionOperation Mode display Mode Select buttonTemperature setting display Timer displaySpecifications Service RefNoise Criterion Curves PKA-A24KA4.THPKA-A30KA4.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 MALFUNCTION-DIAGNOSIS Method by Remote Controller ProcedureWired remote controller Case of trouble during operationU9,UH Wired remote controller LED 1, 2 PCB in outdoor unit Unit’s power terminal block L1, L2, GRAppear even when operation Remote controller wire shortSELF-DIAGNOSIS Action Table Pipe temperature OperatingCause Countermeasure Pipe temperature thermistor Remote controller transmissionErrorE0/signal receiving errorE4 Condenser-Evaporator TH5Error Signal receiving error Error Transmitting errorRemote controller control board Indoor/outdoor unit communicationTroubleshooting by Inferior Phenomena Phenomena Cause Countermeasure 1Upward/downward vanePerformance failure ControllerWhen the remote controller cannot be used Emergency OperationHeat pump type Cooling Only typeLower temperature Condenser/evaporator temperatureThermistor Thermistor TH5Sensor signal check DC Fan motor fan motor/indoor controller circuit boardTest Point Diagram Functions of DIP Switch and Jumper Wire Special Function OperationRotation function and Back-up function Outline of functions System constraintRequest Code List Rotation setting2nd stage cut-in setting 2nd unit Cut-outHow to connect Setting method of each function by wired remote controllerBACK-UP Heating Function CN152 Outline of functionsDisassembly Procedure Operation Procedure Photos & IllustrationsBe careful when removing heavy parts PhotoRemoving the Nozzle Assembly with Vane Operation Procedure PhotosVane Motor and Drain Hose Disconnect the connector CN44 on the indoor controller Remove the panel and the corner box. Refer to stepRemove the screw fixing motor band. See Photo 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

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