Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 354

FDT ( N ) -H
• Function of jumper wires
Name
With
J1(SW5-1)
None
With
J2(SW5-2)
None
With
J3(SW5-3)
None
With
J4(SW4-1)
None
With
J5(SW4-2)
None
With
J6(SW4-3)
None
With
J7(SW4-4)
None
*1 With
J7(SW4-4) None
Note (1) *1 J7 (SW4-4) is for switching models on the FDKN (P) Series.
Model: FDT, FDR, FDU, FDFL series
Power
supply
Transformer, primary side
• Function of DIP switched (SW3)
Switch
ON
SW3-1
OFF
ON
SW3-2
OFF
ON
SW3-3
OFF
ON
SW3-4
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.
352
Function
1 Phase model
3 Phase model
Cooling only type
Heat pump type
Pulse input
Step input
—
Antifrost 2.5˚C
Antifrost 1˚C
With abnormality resetting
Without abnormality resetting
4 position louver control: valid
4 position louver control: invalid
FDKN208 type
FDKN258, 308 type
9 7 6 3 4 8 13
52X6
52X5 52X4 52X7 52X1 52X2 52X3
Transformer, secondary side
( Power supply connector )
for PCB
Function
Power off guaranteed
No power off guaranteed
With low-voltage detection
control
Without low-voltage detection
control
Power up mode (UHi-Lo)
Mild mode (Hi-Lo)
Indoor fan is Lo when heating
thermostat is OFF.
Indoor fan is OFF when
heating thermostat is OFF.
• Function of DIP switched (SW3)
Switch
ON
SW3-1
OFF
ON
SW3-2
OFF
ON
SW3-3
OFF
ON
SW3-4
OFF
SW4
SW2 (Only case of FDT)
(Optional : For auto lift panel)
SW2 SW3
SW4
SW5 SW1
For test mode selection
(Shortcircuit : Test mode)
Thermistor
(Return air)
Thermistor
(Heat exchanger)
CNV CNT
External input /
output function
• Function of DIP switched (SW4, 5)
Switch Function
ON Antifrost 2.5˚C
SW4-1(J1)
OFF Antifrost 1˚C
ON With abnormality resetting
SW4-2(J2)
OFF Without abnormality resetting
ON 4 position louver control: valid
SW4-3(J3)
OFF 4 position louver control: invalid
ON 1 Phase model
SW5-1(J4)
OFF 3 Phase model
ON Step input
SW5-2(J5)
OFF Pulse input
Function
Power off guaranteed
No power off guaranteed
With low-voltage detection
control
Without low-voltage detection
control
Power up mode (UHi-Lo)
Mild mode (Hi-Lo)
Indoor fan is Lo when heating
thermostat is OFF.
Indoor fan is OFF when
heating thermostat is OFF.
SW3
SW1
( Indoor unit number )
address switch
SW5