Hitachi Primairy Series - Check Parts Unit

3. CHECKING COMPONENTS
3.2 Check parts unit
1. Indoor unit fan motor
Ducted motor model (DC motor)
3.0HP: SIC-68CVL-F160-2
3.5/4.0HP: SIC-101CW-F1210-1
5.0/6.0/6.5HP: SIC-101CW-F1250-4
Cassette motor model(DC motor)
3.0/3.5/4.0HP: EHDS50AQH
5.0/6.0/6.5HP:SIC-72FW-D8124-2B
Floor Ceiling model (DC motor)
3.0HP: SIC-70CW-F1100-6
3.5/4.0HP: SIC-70CW-F1140-3
5.0/6.0/6.5HP: SIC-101CW-F1181-2
Test in resistance.
TOOL: Multimeter.
Test the resistance of the main winding. The indoor fan motor fails if the resistance of main
winding
is 0(short circuit)or∞（open circuit).
Test in voltage
TOOL: Multimeter.
Insert screwdriver to rotate indoor fan motor slowly for 1 revolution or over,
and measure voltage “YELLOW” and “GND” on motor. The voltage repeat 0V DC and 5V DC.
NOTES:
Please don’t hold motor by lead wires.
Please don’t plug IN/OUT the motor connector while power ON.
Please don’t drop hurl or dump motor against hard material. Malfunction may not be
observed at early stage after such shock. But it may be found later, this type of mishandling
void our warranty.
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