Mitsubishi Heavy Industries FDC508HES3 Owner's Manual download pdf (Page 23)

• Function of jumper wires

Name Function

J1(SW5-1)

With 1 Phase model

None 3 Phase model

J2(SW5-2)

With Cooling only type

None Heat pump type

J3(SW5-3)

With Pulse input

None Step input

J4(SW4-1)

With

—

None

J5(SW4-2)

With Antifrost 2.5˚C

None Antifrost 1˚C

J6(SW4-3)

With With abnormality resetting

None Without abnormality resetting

J7(SW4-4)

With

4 position louver control: valid

None

4 position louver control: invalid

*1 With

FDKN208 type

J7(SW4-4) None

FDKN258, 308 type

• Function of DIP switched (SW3)

Switch Function

SW3-1

ON Power off guaranteed

OFF No power off guaranteed

ON With low-voltage detection

control

SW3-2

OFF Without low-voltage detection

control

SW3-3

ON Power up mode (UHi-Lo)

OFF Mild mode (Hi-Lo)

ON Indoor fan is Lo when heating

thermostat is OFF.

SW3-4

OFF Indoor fan is OFF when

heating thermostat is OFF.

Note (1) *1 J7 (SW4-4) is for switching models on the FDKN (P) Series.

Model: FDT, FDR, FDU, FDFL series

• Function of DIP switched (SW3)

Switch Function

SW3-1

ON Power off guaranteed

OFF No power off guaranteed

ON With low-voltage detection

control

SW3-2

OFF Without low-voltage detection

control

SW3-3

ON Power up mode (UHi-Lo)

OFF Mild mode (Hi-Lo)

ON Indoor fan is Lo when heating

thermostat is OFF.

SW3-4

OFF Indoor fan is OFF when

heating thermostat is OFF.

(ii) Please match the settings of control switching switches (SW3, SW4, SW5) to the settings they had before they were replaced. With

these switches, if the printed circuit had a jumper wire before being replaced, set to jumper wire ON if there was a jumper wire and

jumper OFF is these was not.

(iii) Connect the fast-on terminals and connectors that are to the circuit board for the micro-computer.

Connect by matching the wire color of the fast-on terminal with the color printed on the circuit board for the micro-computer.

Note (1) When connecting to the fast-on connection for the circuit board for the micro-computer, use care so as not to excessively

distort the circuit board.

Power supply connector

for PCB

Transformer, secondary side External input /

output function

SW4

SW5

SW3

SW1

SW2 (Only case of FDT)

(Optional : For auto lift panel)

( )

Indoor unit number

address switch

( )

For test mode selection

(Shortcircuit : Test mode)

Thermistor

(Return air)

Thermistor

(Heat exchanger)

Transformer, primary side

Power

supply

52X6

52X5 52X4 52X7 52X1 52X2 52X3

CNTCNV

SW4

SW2

SW5

CNE

CNQCNS CNHCNN

SW3

1011

76 3 48 13

SW1

• Function of DIP switched (SW4, 5)

Switch Function

SW4-1(J1)

ON Antifrost 2.5˚C

OFF Antifrost 1˚C

SW4-2(J2)

ON With abnormality resetting

OFF Without abnormality resetting

SW4-3(J3)

ON 4 position louver control: valid

OFF 4 position louver control: invalid

SW5-1(J4)

ON 1 Phase model

OFF 3 Phase model

SW5-2(J5)

ON Step input

OFF Pulse input

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 33 34

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Mitsubishi Heavy Industries FDC508HES3 Owner's Manual Page 23

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