Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 209

7-2. Selection of controls
Controls of outdoor unit may be selected as follows using the dip switches on the PCB and C○○, P○○ on the 7-segment.
To change C○○, P○○ on the 7-segment, hold down SW8 (7-segement display increment up: 1-digit), SW9 (7-segment increment up: 10-digit) and SW7 (Data write/Enter).
Unit set※1
SW setting on PCB
Master SW3-2 to ON
SW3-7 to ON *2
Master
Master SW5-1 to ON + SW5-2 to ON
SW5-1 to ON + SW5-2 to OFF
Master
Close the fluid operation valve on outdoor unit and set as follows:
(1) SW5-2 on PCB to ON
Master
(2) SW5-3 on PCB to ON
(3) SW5-1 on PCB to ON
SW4-5:OFF, SW4-6:OFF*2 80% (Factory default)
SW4-5:ON , SW4-6:OFF*2 60%
Master
SW4-5:OFF, SW4-6:ON*2 40%
SW4-5:ON , SW4-6:ON*2 00%
Master SW5-5
Master/slave
SW6-3 to ON
Master J13: Closed (Factory default), J13: Opened
Master/slave
J14 : Closed (Factory default), J14: Opened
J15: Closed (Factory default), J15: Opened
Master/slave
Master
ー
Master/slave
ー
ー
ー
ー
ー
Master/slave
ー
※1 "Unit set" shown in the above table refers to the master/slave setting of units comprising a combined installation.
Master: control mode setting required for the master unit only (setting not required with the slave unit).
Master/slave: control mode setting required for both master and slave units.
※2 Control is switched when both the allocation of external input function (P11∼14) and SW are changed.
(Example: To use CnS1 for the input of forced cooling mode, set P11 at 2 and SW3-7 at ON. To use CnS2 for the input of forced cooling mode, set P12 at 2 and SW3-7 at ON.)
By changing the allocation of external input functions (P11∼14) on the 7-segment, functions of external
input terminals may be selected. Inputting signals to external input terminals enable the following functions.
Setting value for allocation of external input function
"0" : External operation input
"1" : Demand input
"2" : Cooling/heating forced input
"3" : Silent mode input
"4" : Spare
"5" : Outdoor fan snow guard control input
"6" : Test run external input 1 (equivalent to SW5-1)
"7" : Test run external input 2 (equivalent to SW5-2)
"8" : Silent mode 2
"9" : Spare
7-3. External input and output terminals specifications
Name
External input CnS1 External operation input (Closed at shipping)
External input CnS2 Demand input (Closed at shipping)
External input CnH1 Cooling / Heating forced input (Opened at shipping)
External input CnG2 Silencing mode input (Opened at shipping)
External output CnH Operation output
External output CnY Error output
Control selecting method
C P on 7-segment
○○, ○○
ー
Set external input function
allocation to
"2"
ー
ー
ー
Set allocation of external
allocation to
"1"
ー
ー
ー
ー
C70
C75
P11
P12
P13
P14
P16
With external input terminals closed With external input terminals opened
Invalid
Invalid
Valid
Valid
Valid
Test run start
Cooling
Valid
Purpose (Factory default)
Non-voltage contactor (DC12V)
Non-voltage contactor (DC12V)
Non-voltage contactor (DC12V)
Non-voltage contactor (DC12V)
DC12V output
DC12V output
Automatic back up operation
Forced cooling mode
*2 (It can be fixed at cooling with external input terminals opened, or at heating with them closed.)
Cooling test run
Heating test run
Pump down operation
Inputting signals to external input terminals selects the demand mode.
*2 (J13 short-circuited: Level input, J13 open: Pulse input)
Communication method selection ON: Previous SL communication, OFF: New SL communication
High static pressure mode
External input selection (CnS1, CnS2 only) Closed : Level input, Opened: Pulse input
Defrosting mode is switched. (will enter defrosting mode more frequently)
Defrost selection Closed : Normal defrosting, Opened: Forced defrosting
Operation priority selection
Outdoor unit fan snow protection control 0: Control disabled (at shipping)
Allocation of external input (CnS1)
Allocation of external input (CnS2)
Allocation of external input (CnG1)
Allocation of external input (CnG2)
Outdoor unit fan snow protection control ON time setting - 30 sec (at shipping) 10, 30-600 sec
Valid
Valid
Invalid
Invalid
Invalid
Normal
Heating
Invalid
Specification Operating side connector
NICHIATSU B02B-XAMK-1 (LF) (SN)
NICHIATSU B02B-XARK-1 (LF) (SN)
NICHIATSU B02B-XAEK-1 (LF) (SN)
NICHIATSU B02B-XASK-1 (LF) (SN)
MOLEX 5286-02A-BU
MOLEX 5266-02A
- -
206
Content of control
0: First push priority (at shipping)
1: Last push priority
1: Control enabled
*