Toshiba HWS-P1105HR-E, Service Manual

Page: 167 / 184

166
4 Electric parts
replacement 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, high pressure switch)
* 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 connector A
connector B
4) Remove the earth 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.)
No.
Exchange parts
name
Work procedure Remarks
Control board
Control board
Insulating
sheet
Hear release
grease
Fan motor (upper)
Fan motor (lower)
Reactor lead
connector A
Reactor lead
connector B
Compressor lead
4-way valve coil
Temperature sensor
Hydro power source Motorized control coil
Screw for fixing
board
Screw for fixing element
(9 positions)
Earth wire
Compressor
case
thermostat
High pressure
switch