Description of Fault
A CATALYST Fan Belt/Motor Adjustment Fault is an indication of power spikes within the CATALYST variable frequency drive. It is typically caused by abnormal mechanical operation of the unit’s fan. A normal operating fan assembly should have all components rotating smoothly without oscillation or vibration, and therefore should not cause power spikes.
A CATALYST Fan Belt/Motor Adjustment Fault will automatically reset if the drive goes an entire 24-hour period without seeing a power spike.
Possible Cause
A CATALYST Fan Belt/Motor Adjustment Fault is typically caused by:
- Worn, loose, or improperly adjusted belt.
- Belt alignment issue.
- Improperly adjusted sheave.
- Loose or broken motor mount causing the motor to shake.
- Worn bearings.
Troubleshooting
From the eIQ Platform
If the fault is on the EIQ platform it will be necessary for a trained technician to inspect the equipment for issues with the belt and/or motor assembly. There are no troubleshooting steps from the EIQ platform.
On Site
- Verify that the belt is in good condition and is adjusted to the proper tension.
- Verify that the alignment of the belt is adjusted correctly.
- Verify that there are no defects with the blower housing or squirrel cage.
- Verify that the bearings are in good condition.
- Verify that the sheave is adjusted properly and the set screws are tight.
- Verify that the motor shaft, and the blower wheel shaft are not damaged.
- If all components appear to be in good working order, the motor deceleration speed may need to be adjusted.