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7
ELECTRIC CIRCUIT DIAGRAM
1) FUNCTIONAL CIRCUIT DIAGRAM
42HWG007/009/012 & HWG195/225/305C-SERIES
a
•
After the power I/O button is pressed once, the Power-relay and AC SWITCH are turned
on or off per the remote control setpoint.
– AC SWITCH U9 is controlled per the fan speed selection.
– Power-relay K1 is controlled per the operation mode selection.
•
If the power I/O button is pressed once more, the Power-relay and AC SWITCH are turned
off and the unit stops operation.
•
The unit turns on or off according to the temperature setpoint by sensing the room air
temperature through thermistor.
•
If the fan speed selection is set to the auto position, the fan speed is automatically con-
trolled according to the temperature difference between room temperature and tempera-
ture setpoint.
37
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