Toshiba CARRIER RAV-SP300AT2-UL - Manual (Page 90)

– 90 –
No. Part name
Exchange of
electric parts
Procedure
1. Control P.C. board
1) Perform work of Detachment 1 of  and „ .
WARNING
Never disassemble the inverter for 1 minute after
power 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 sensors,
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.
(Torque at tightening time: 1.47 ± 0.1N•m)
Compressor lead
U: CN200 Red
V: CN201 White
W: CN202 Black
Reactor lead
Relay connector: 2 positions
Remove the power wire from the power supply
terminal block.
(Torque at tightening time: 2.5 ± 0.1N•m)
4) Remove the earth wire from the control P.C.
board. (Truss 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,
7 pcs. Pan S tight screw for fixing P.C. board M3,
20 mm, 1 pc.)
6) Remove the control P.C. board.
(Supporter: 5 positions)
NOTE:
It is difficult to take out it because of radiator grease
for heat sink.
7) Mount a new control P.C. board.
NOTE:
Do not forget to attach the aluminum plate (Q201) and
the insulating sheet (Q300).
(Applying a little of radiator grease at the rear surface
of the insulating sheet in advance to adhere to the
heat sink makes easy the work.)
Remarks
Control P.C. board Control P.C. board
Insulating sheet Insulating sheet
(Q300)
(Q300)
Aluminum plate Aluminum plate
(Q201)
(Q201)
Radiator grease Radiator grease
Control P.C. board
Insulating sheet
(Q300)
Aluminum plate
(Q201) Radiator grease
PMV coil PMV coil
Indoor power supply Indoor power supply
4-way valve coil 4-way valve coil
Pressure
switch Compressor
lead
Fan motor
Bundling band Bundling band
(Reactor lead) (Reactor lead)
Power supply terminal block Power supply terminal block
Screw for fixing P.C. board Screw for fixing P.C. board
Power supply terminal block
Screw for fixing P.C. board
Screw for fixing element (7 positions)
Compressor
case thermo.
PMV coil
Senser Senser Indoor power supply
4-way valve coil
Ground screw Ground screw
Inter unit Inter unit
cable
cable
Senser
Ground screw
Inter unit
cable
Bundling band
(Reactor lead)
Relay Relay
connector
connector
Relay
connector