Toshiba CARRIER RAV-SP300AT2-UL - Manual (Page 100)

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No. Part name
Replacement of
electric parts
Procedure
1. Control P.C. board
1) Perform work of Detachment 1 of  and
„ .
X WARNING X
Never disassemble the inverter for 1 minute
after power supply has been turned off
because an electric shock may be caused.
2) Remove the connectors connected to the
control P.C. board.
(Indoor power supply, Temperature
sensor, PMV coil, 4-way valve coil,
Compressor case thermo, Fan motor,
reactor, pressure switch)
• Unlock the lock of the housing part and
then remove the connectors.
3) Remove the lead wires connected to the
control P.C. board.
Compressor lead U : CN200 Red
V : CN201 White
W : CN202 Black
Reactor lead
Relay connector
: 2 positions
4) Remove the earth wire from the control
P.C. board.
(Trust B tight screw M4, 6 mm, 1 pc.)
5) Remove the fixing screws of the control
P.C. board.
(Screw with collar for fixing element M3,
16 mm, 9 pcs. Pan S tight screw for fixing
board M3, 20 mm, 1 pc.)
6) Remove the control P.C. board.
(Supporter: 5 positions)
NOTE :
Be careful to take out because there is sealing
material for the heat sink.
7) Replace the control P.C. board with a new
one.
NOTE :
• Be sure not to come-off of the insulating sheet.
Remarks
Pressure switch Upper fan motor
Compressor
case thermo. Lower fan motor
Compressor lead
Temperature Temperature
sensor
sensor
4-way valve coil 4-way valve coil
PMV coil PMV coil
Ground screw Ground screw
Inter-unit cable Inter-unit cable
4-way valve coil
Indoor power supply Indoor power supply
PMV coil Sensor Sensor
Ground screw
Inter-unit cable
Indoor power supply
Sensor
Indoor power supply Indoor power supply
Temperature
sensor
Indoor power supply
Insulating sheet
Control P.C. board Control P.C. board
Sealing material Sealing material
P.C. board P.C. board
fixing screw
fixing screw
Control P.C. board
Sealing material
P.C. board
fixing screw
Element fixing screws
(9 positions)