Toshiba HWS-803XWHM3-E Service Manual page 175

Exchange parts
No.
name
4 Electric parts
replacement
Work procedure
1. Control board
1) Perform the step 1-1.
WARNING
For 1 minute after the power is turned off, do not
disassemble the inverter to prevent an electric shock.
2) Remove the connector connected to the control
(Hydro power source, temperature sensor, electric
control valve coil, 4-way valve coil, compressor
case thermostat, fan motor)
* Remove the connector by releasing the lock in the
housing.
3) Remove the lead cable connected to the control
board.
Compressor lead U: CN200 Red
V: CN201 White
W: CN202 Black
Reactor lead CN05 White
CN06 White Relay connector
4) Remove the ground wire of the control board.
(Truss B tight screw Ø4 × 6, 1 screw)
5) Remove the fixed screws of the control board.
(Collar screw for fixing element Ø3 × 16, 9 screws,
Pan S-tight screw for fixing the board Ø3 × 20, 1
screw)
6) Remove the control board.
(Supporter 5 positions)
Note) Removing the control board may be difficult
due to the heat release grease for the heat
sink.
7) Attach a new control board.
NOTE
• Be careful for not taking the compressor lead V:
CN201 White for the reactor lead CN05 or 06
White.
(The compressor lead has a transparent sleeve at
its ring terminal. The reactor lead ring terminal does
not have sleeve.)
• Be sure to attach the insulating sheet.
(Applying beforehand a bit of heat release grease
to the back side of the insulating sheet can easily
paste the sheet to the heat sink.)
Compressor
case
thermostat
Fan motor (lower)
Temperature
sensor
Motorized control coil
Screw for fixing
board
Control board
174
Remarks
Fan motor (upper)
Control board
Reactor lead
Compressor lead
4-way valve coil
Indoor power source
Screw for fixing element
(9 positions)
Hear release
Insulating
sheet grease
Ground wire