Microcomputer Block Diagram - Toshiba RAC-08EW-E Service Manual

8. MICROCOMPUTER BLOCK DIAGRAM

AC 50Hz
Transformer
220/230/
240V
Power relay
Compressor
A bold line denotes a 220/230/240V AC line.
Functions
3-minute delay at Restart for
compressor
Start-up Compensation for fan
motor
Timer
Processing
(Temperature processing)
Power supply
circuit
Relay driver
C.P.U.
Relay driver
Miniature
relay
Fan motor
Fig. 8-1
– 8 –
Mode selector
(Cool/Dry/Fan only)
Operation indicator
Economy indicator
Economy indicator
Warning indicator
Timer selector (ON,
CONTINUE, OFF)
Timer setting
Air flow selection
(Fan selector High,
Low, AUTO)
Operation
(ON/OFF)
Temperature setting
Economy selection
(ON/OFF)
Remote control unit
Room temperature sensor
(Ta sensor)
Heat-exchanger sensor
(Tc sensor)
Control unit