Troubleshooting Guidelines
The High Voltage Power terminals (L) and (N) must be connected to
nameplate rated voltage at all times. The acceptable high voltage input
range is 180-305VAC for 208-230/277VAC and 414-505VAC for the 460VAC
models. If the motor does not operate, confirm this voltage is present at the
motor and make repairs to the HVAC system if it is not. This voltage alone
will not operate the motor. A low voltage input to terminals (C) and (1-5) is
required for motor operation. The (G) terminal on the motor should always be
connected to earth ground for safety.
24VAC will operate the motor at the respective speed when connected
properly to terminals (C) and (1-5). When troubleshooting the motor, always
check for voltage between terminals (1-5) and the (C) terminal at the motor.
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The (C) Common terminal on the motor must be connected to the
24VAC common (C) thermostat terminal or 24VAC common side of
the transformer on the HVAC System. Make sure that this line is not
connected to the side of the transformer connected to the thermostat
24VAC (R). If it is connected to the (R) high side of the transformer, the
motor will not operate.
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If the motor does not operate or does not appear to operate at the
desired speed, check the voltage between the applied terminal (1-5)
and (C) at the motor. The acceptable voltage range is (12-30VAC).
Correct any voltage issues. Do not assume the motor is failed unless you
have confirmed proper high and low voltage inputs at the motor.
18VDC will operate the motor at the respective speed when connected
properly to terminals (C) and (1, 3 or 5). When troubleshooting the motor,
always check for voltage between terminals (1, 3 or 5) and the (C) terminal
at the motor.
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The (C) Common terminal on the motor must be connected to DC
common
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If the motor does not operate or does not appear to operate at the
desired speed, check the voltage between the applied terminal (1, 3 or
5) and (C) at the motor. The acceptable voltage range is (15-23VDC).
Correct any voltage issues. Do not assume the motor is failed unless
you have confirmed proper high and low voltage inputs at the motor.
If 18VDC is applied to terminals (2) or (4), the motor will still operate.
Applying 18VDC to terminal (2) will operate the motor at MED speed.
Applying 18VDC to terminal (4) will operate the motor at HIGH speed.
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