– 90 –
No.
Part name
Control board
assembly
Procedure
1. Disconnect the leads and connectors connected to
the other parts from the control board assembly.
1) Leads
• 3 leads (black, white, orange) connected to
terminal block.
• Lead connected to compressor :
Disconnect the connector (3P).
• Lead connected to reactor :
Disconnect the two connectors (2P).
2) Connectors
CN300 : Outdoor fan motor (3P: white)*
(* : See Note)
CN700 : PMV (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.
Remarks
CN300 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.
P.C. board base
P.C. board
CN700 CN602 CN300
CN603
CN601
FILE NO. SVM-10052
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