21
• 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
CNT
CNV
SW4
SW2
SW5
CNE
CNQ
CNS
CNH
CNN
SW3
9
10
11
7
6
3
4
8
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
