Toshiba RAS-10YKV-E - Manual (Page 64)

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No. Part name
T
Control board
assembly
Remarks Procedure
1) Disconnect lead wires and connectors connected
from the control board assembly to other parts.
1. Lead wires
• Connection with terminal block :
3 wires (Black, White, Orange)
• Connection with compressor :
Remove the connector (3P).
• Connection with reactor :
Remove the relay connectors from P07, 08
(2P, White) and P12, 13 (2P, Yellow).
2. Connectors
CN300 : Outdoor fan (3P, White)
CN301 : Outdoor fan position detection
(5P, White)
CN701 : 4 valve (3P, Yellow)
CN600 : TE sensor (2P, White)
CN601 : TD sensor (3P, White)
CN603 : TS sensor (3P, White)
CN602 : TO sensor (2P, White)
CN500 : Case thermo. (2P, White)
CN703 : Pulse modulating valve (6P, White)
2) Remove the control board assembly from P.C.
board base.
1. Main control board assembly side
• Remove two claws of P.C. board base, and
remove upward the heat sink with hands.
• Remove three screws fixing the heat sink
and main control board assembly side, and
replace the board with a new one.
;
;
Reactor
U
Rear cabinet 1) Perform work of item 1 of
Q
, and
R S
.
2) Remove fixed screws fixing to the bottom plate.
(ST1TØ4 x 10
l
3 pcs.)
3) Remove fixed screws fixing to the heat
exchanger. (ST1TØ4 x 10
l
2 pcs.)
4) Remove fixed screw fixing to the valve mounting
plate. (ST1TØ4 x 10
l
1 pc.)
CN300, CN301 and CN701, etc.
at the control board assembly
side are connectors with locks.
Therefore, remove the connector
while pushing the part indicated
by an arrow.
When mounting a new board,
check that the board is correctly
set in the groove of base holder
of P.C. board base.
CN701 CN500 CN703 CN301
P.C. board base
P.C. board
CN300
CN602
CN600
CN601
CN603