IM-4055
Installation, Operation & Maintenance Manual
14
Maintenance
and free of dirt, dust and debris. Always keep records of the maintenance that is performed.
Troubleshooting
Remote Dial does not vary the motor speed (all motor types, except OP)
• Make sure that the connections are solid.
• Make sure that the dial on the motor is opened CW.
Speed control does not vary the motor speed
• Check voltage to ensure the motor is receiving the correct input voltage.
• Verify that all of the connections inside of the fan and motor are secure.
GridPoint controller does not connect to motor
• Check that cable connections are secure between the motor and the GridPoint controller.
Motor does not operate (TEFC motors: 67002107, 67002205)
• Check that the motor is wired for the correct supply voltage.
• Verify the Status LED is solid red.
for the motor to operate.
• Verify that the yellow wires are present on terminals 5 and 6 on the low voltage terminal board.
Fault indication (TEFC motors: 67002107, 67002205)
provide diagnostic assistance of motor faults. When a fault occurs, the LED will blink
right for fault indications.
When a fault occurs, the LED will blink the number of times corresponding to the fault,
pause and then repeat blinking. Count the number of blinks multiple times to ensure
the motor will shut down to protect itself and the power will need to be reset.
TEFC Motors (67002107 and 67002205)
No. of
Blinks
Indicated Fault
2 Overcurrent
3 Overvoltage
4 Undervoltage
5 Communicaon Error
6 Sync Loss
7 Spin Fault
8
3 Sec/60 Sec
Motor Overload
9 Motor Over-Temperature
Twin City Fan
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