Control board
assembly
%
1) Disconnect the leads and connectors connected
to the other parts from the control board assem-
bly.
1) Leads
• 3 leads (black, white, orange) connected to
SL connectors.
• Lead connected to compressor : Disconnect
the connector (3P).
• Lead connected to reactor : Disconnect the
two connectors (2P).
2) Connectors (x8)
CN300 : Outdoor fan motor (3P: white)*
(See Note)
CN701 : 4-way valve (2P: yellow)*
CN600 : TE sensor (2P: white)*
CN700 : PMW (6P: white)
CN603 : TS sensor (3P: white)*
CN601 :TD sensor (3P: white)*
CN602 : TO sensor (2P: white)
Note :
These connectors have a disconnect prevention
mechanism: as such, the lock on their housing
must be released before they are disconnected.
2) Remove the control board assembly from the
P.C. board base. (Remove the heat sink and
control board assembly while keeping them
screwed together.)
Note :
Disengage the four claws of the P.C. board base,
hold the heat sink, and lift to remove it.
3) Remove the two fixing screws used to secure
the heat sink and control board assembly.
4) Mount the new control board assembly.
Note :
When mounting the new control board assembly,
ensure that the P.C. board is inserted properly
into the P.C. board support groove.
CN300, CN701, CN600 and
CN603 are connectors with
locking mechanisms: as such,
to disconnect them, they must
be pressed in the direction of the
arrow while pulling them out.
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