Toshiba Carrier RAV-SP180AT2-UL Service Manual page 91

No. Part name
1. Control P.C. board
Exchange of
electric parts
Never disassemble the inverter for 1 minute after
power has been turned off because an electric
shock may be caused.
NOTE:
It is difficult to take out it because of radiator grease
for heat sink.
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.)
Procedure
1) Perform work of Detachment 1 of
WARNING
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)
7) Mount a new control P.C. board.
and .
– 91 –
Remarks
Pressure Compressor
switch lead
Compressor
case thermo. Fan motor
Relay Relay Relay
connector connector connector
Bundling band Bundling band Bundling band
(Reactor lead) (Reactor lead) (Reactor lead)
Ground screw Ground screw Ground screw
Inter unit Inter unit Inter unit
cable cable cable
PMV coil PMV coil PMV coil
4-way valve coil 4-way valve coil 4-way valve coil
Senser Senser Senser Indoor power supply Indoor power supply Indoor power supply
Screw for fixing P.C. board Screw for fixing P.C. board Screw for fixing P.C. board
Screw for fixing element (7 positions)
Power supply terminal block Power supply terminal block Power supply terminal block
Aluminum plate Aluminum plate Aluminum plate Radiator grease Radiator grease Radiator grease
(Q201) (Q201) (Q201)
Insulating sheet Insulating sheet Insulating sheet
(Q300) (Q300) (Q300)
Control P.C. board Control P.C. board Control P.C. board