'22 • PAC-SM-412
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43
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i) Replace the PCB
① Take off the connection of connector and remove the screw of power transistor then remove the PCB.
Wipe off the silicon grease neatly on the control’s radiation heat fins.
② Before installing the power transistor on the new PCB, apply uniformly a bundled of silicon grease first on the surface of
power transistor. Make sure it is applied to prevent damage on power transistor, and install the PCB not to pinch the wirings.
③ Tighten the screw of power transistor and reconnect the wirings to the PCB.
Confirm the connection and don’t use soldering in the connection. Tighten properly the power transistor with a screw and
make sure there is no slack. Power transistor can be damage if not properly tighten. (Recommended power transistor
tightening torque:0.59 -0.78N ･m )
ii) Fan motor control PCB
Parts mounting are different by the kind of PCB.
• Model FDUA125VH
PSC012D022
3) Motor control PCB
Keep OFF
Keep OFF
●DIP switch setting list
SW2 0
SW6-1
SW6-2
SW6-3
SW6-4
SW7-1 OFF
SW7-2 OFF
SW7-3 OFF
SW7-4
SW8-1
SW8-2
SW8-3
SW8-4
OFF
OFF
OFF
OFF
OFF
JSL1 With
Keep OFF
Keep OFF
Keep OFF
Keep OFF
Superlink terminal spare Normal
*
/switch to spare
Reserved
Anti-freeze control
Reserved
Reserved
Reserved
Reserved
Reserved
Test run, drain pump motor Normal
*
/Test run
Valid/Invalid
*
Normal
Invalid
Model selection As per model See table 1.
Remark
Address No. setting at plural indoor units control by 1 R/C 0-F
Switch Description Default setting
Table 1: Indoor unit model selection with SW6-1
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SW6-4
125VH
SW6-4
SW6-1
SW6-2
SW6-3
* Default settingNote(1) : SW8 : FDE only
ON
OFF
OFF
ON
Switch
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