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13-1-4. Compressor P.C. Board (MCC-1746) Replacement Procedure
Target model
43TN9883: MMY-MUP0721HT9*/0961HT9*/072H1HT9*
43TN9884: MMY-MUP1201HT9*/1441HT9*/1681HT9*/096H1HT9*/120H1HT9*
This board is commonly installed in different models. Set the DIP switch (SW800) settings of the service board to match
as before replacement.
Included items:
①
MCC-1746 : 1pcs
Replacement Steps:
(1) Turn off the power supply of the outdoor unit and wait
at least 5 minutes for the capacitor to discharge.
(2) Remove all of the connectors attached to the Compressor
P.C. board. (Remove the connectors by pulling the connector
body. Do not pull the wire.)
(3) Remove the BUS-BAR and lead wire screws(⑤：5pcs (M6) )
that connected the Capacitor P.C. board and the Compressor
P.C. board.
(4) Remove all of the connector and
screw terminals(⑥：6pcs (M5) )
which were connected to the
Compressor P.C. board.
(Remove the connectors by pulling
the connector body. Do not pull the
wire.)
⑥ RED lead wire(CN301, M5)
⑥ WHITE lead wire(CN302, M5)
⑥ BLACK lead wire(CN303, M5)
② Spacer
⑦ Screw(M4)
SW800
③ Bush
④ Collar
⑧ Screw(M3)
② Spacer
② Spacer : 4pcs
③ Bush :
Pinch this part by round-
nose pliers for removing
the P.C. board
② Spacer
② Spacer
④ Collar :
1pcs
Compressor P.C. board
(
43TN9883, 43TN9884
② Spacer
⑦ Screw(M4)
43TN9883
⑥ RED lead wire(CN201, M5)
⑥ WHITE lead wire(CN202, M5)
⑥ BLACK lead wire(CN203, M5)
- 291 -
1pcs
)
43TN9884
⑤ Screw(M6)
BUS-BAR
⑤ Screw(M6)
⑤ Screw(M6)
BUS-BAR
⑤ Screw(M6)
⑤ Screw(M6)
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