Mitsubishi Heavy Industries SCM50ZS-S1 - Page 224

This PCB is a general PCB. Replace the PCB according to this instruction.
a) Replace the PCB
i) Unscrew terminal of the wiring(yellow/green) connected to terminal block (CNWO) from the box.
ii) Replace the PCB only after all the wirings connected to the connector are removed.
iii) Fix the board such that it will not pinch any of the wires.
iv)
Reconnect the wirings to the PCB. Wiring connector color should match with the color of connector of the PCB.
v)
Screw back the terminal of wiring, that was removed in i).
b) Power PCB
Parts mounting are different by the kind of
PCB.
Part number
CNM1(White）
Fan motor
CNW1(White）
Control PCB
CNW3（White）
Terminal block
CNW0（White）
Terminal block
2) Power PCB
●DIP switch setting list
SW2 0
SW6-1
SW6-2
SW6-3
SW6-4
SW7-1 OFF
SW7-2 OFF
SW7-3 ON
SW7-4 OFF
JSL1 With
Keep OFF
Superlink terminal spare Normal
*
/switch to spare
Reserved
Powerful mode Valid
Reserved
Keep OFF
Test run, Drain motor Normal
*
/Test run
Valid*/Invalid
Normal
SW8-1 OFF
SW8-2 OFF
SW8-3 OFF
SW8-4 OFF
Keep OFF
Reserved
Reserved
Reserved
Keep OFF
Keep OFF
Keep OFF
Reserved
Model selection As per model See table 1
Remarks
Address No. setting at plural indoor units control by 1 R/C 0-F
Switches Description Default setting
Table 1: Indoor unit model selection with SW6-1-SW6-4
25VF 35VF
ON OFF
OFF ON
OFF OFF
OFF OFF
50VF
ON
OFF
ON
OFF
SW6-4
SW6-1
SW6-2
SW6-3
* Default setting
PSB012D992
△
C
This PCB is a general PCB. Replace the PCB according to this instruction.
a) Replace the PCB
i) Unscrew terminal of the wiring(yellow/green) connected to terminal block (CNWO) from the box.
ii) Replace the PCB only after all the wirings connected to the connector are removed.
iii) Fix the board such that it will not pinch any of the wires.
iv)
Reconnect the wirings to the PCB. Wiring connector color should match with the color of connector of the PCB.
v)
Screw back the terminal of wiring, that was removed in i).
b) Power PCB
Parts mounting are different by the kind of
PCB.
Part number
CNM1(White）
Fan motor
CNW1(White）
Control PCB
CNW3（White）
Terminal block
CNW0（White）
Terminal block
-
222
-
'18 • SCM-T-251