Installation Guide

BIG ASS FAN 4900

Fault messages (cont.)

Message Description

Incompatible EPM fault

Drive hardware error

Cycle power, and then reprogram EPM. If the fault will not clear, replace the drive and EPM.

External fault

Digital input programmed for this feature has been energized/de-energized depending on programming. P121-P124

EPM fault

EPM is missing or defective.

Replace the EPM.

Hardware Failure

Replace the drive.

4–20 mA Signal Loss

Check signal source and wiring, i.e., SmartSense365

™

wiring error.

OEM Defaults Data Fault

The OEM parameters in the EPM module do not match the anticipated defaults according to the VFD. This fault

may appear immediately upon VFD power-up.

To correct this conditionSUHVVWKH6723EXWWRQDQGWKHQSUHVVWKH0HPRU\(QWHUEXWWRQ8VHWKH83'2:1

button to scroll to P1993UHVVWKH0HPRU\(QWHUEXWWRQ8VHWKH83'2:1EXWWRQWRVFUROOWRDVHWWLQJRI0.

3UHVVWKH0HPRU\(QWHUEXWWRQWRVDYHWKHFKDQJH7KH9)'LVQRZDEOHWRUHDGZULWHWKH(30SURSHUO\

High Voltage fault

Check AC incoming power or increase fan deceleration time.

Low Voltage fault

Check AC incoming power

Output Transistor fault

Short circuit, excessive load, excessive cable charging current

9HULI\FRUUHFWORDGPRWRU+3PRWRUZLULQJFDEOHOHQJWKFDEOHW\SH

Motor Short to Ground

Motor Thermal OL

Check actual motor current against FLA (P108)

Flying Restart fault

Failed motor speed sync attempt

Single Phase fault

Incoming AC line phase loss

Check supply power.

Start fault

Start command was present on powerup.

Cycle start command.

Troubleshooting (cont.)