Mitsubishi Heavy Industries FDTCVA SERIES Technical Manual page 247

Model: FDUM, FDU series
CNT
Drain motor
52X3
CNW1
PCB power supply connector
(Primary side)
SETTING BY THE JUMPER WIRE
±
Name
Closed Input signal for CnT - Level input
J1 (SW7-1)
(1)
Open Input signal for CnT - Pulse input
Closed Heating thermostat OFF-Lo Fan speed
J2 (SW7-2)
(1)
Open Heating thermostat OFF-Stop for 5 min then Lo fan speed
Closed Input signal for CnT - Normal operation (Run/Stop)
J3 (SW7-3)
(1)
Open Input signal for CnT - Operation permission/prohibition
Closed Normal
J4 (SW7-4)
(1)
Open Set point for Heating offset by +3˚C
Closed Freeze prevention fan control activated
J6 (SW8-2)
(1)
Open Freeze prevention fan control deactivated
Note (1) "Open" means that jumper wire is not provided on the PCB or the
connection is cut.
(2) The replacement PCB is not equipped with jumpers J1 ~ J4, J6. Instead,
SW7 and 8, with the same functions as jumpers J1~J4, J6, are used in
the position where the jumpers were previously. Set SW7 and 8 locally
in accordance with the above table.
Heat exchanger thermistor,
Return air thermistor
(Thl-R1, Thl-A)
Heat exchanger thermistor
(Thl-R2)
Connector
(CNT)
CNN1 CNN2
CNH
CNV
CNO
52X2 52X1 52X6
F1
CNM3 CNW0
Function
Address swith
(SW2)
DIP switch
(SW5)
Remote controller
J10~J11
(SW10)
CNB CNQ
CNF
SW2 SW10
SW5
LED2
LED1
CNE
CNG
CNW2
PCB power supply connector
Power supply
(Secondary side)
CONTROL SETTING SWITCH (SW5, SW9, SW10)
±
Function of DIP switch SW5 Master/slave setting and fi lter
sign setting (Usually all turned OFF)
Switch
ON
SW5-1
OFF
ON
SW5-3
OFF
Function of DIP switch SW9
Switch
SW9-3
SW9-4
Function of DIP switch SW10
Switch
OFF
SW10-2
(J10)
ON
246
- -
J6
(SW8)
DIP switch
(SW9)
J1~J4
(SW7)
CNZ CNI
SW8 SW9
SW7
CNK1 CNK2
Function
ON Slave c
OFF Slave b
SW5-2
ON Slave a
OFF Master
Setting time : 1000hrs. (Unit stop)
ON
OFF Setting time : 1000hrs. (Display)
SW5-4
ON Setting time : 600hrs. (Display)
OFF Setting time : 180hrs. (Display factory setting)
Function
Emergency operation
ON
Normal
OFF
Fan control : High speed (High Ceiling)
ON
Fan control : Standard
OFF
Function
OFF Remote controller air flow –
ON Remote controller air flow 1 speed
SW10-3
OFF Remote controller air flow 2 speed
(J11)
ON Remote controller air flow 3 speed
Float switch