Installation guide

Isis

34 Troubleshooting

WARNING: When servicing or replacement of a component in the fan requires the removal or disconnection of a safety

device, the safety device is to be reinstalled or remounted as previously installed.

WARNING—TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

a. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.

b. Before servicing or cleaning unit, switch power off at the service panel and lock the service disconnecting means to

prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely

fasten a prominent warning device, such as a tag, to the service panel.

Electrical troubleshooting

CAUTION: When adjusting the fan direction switch, be careful not to damage the internal components!

Fan status LED denitions

LED Off: OK:

One 1-Second Flash/5 Seconds Off: Buss Under / Overvoltage

Two 1-Second Flashes/5 Seconds Off: Motor Over-current

Three 1-Second Flashes/5 Seconds Off: Commutation / Motor Stall

Four 1-Second Flashes/5 Seconds Off: Motor Over-temperature

Five 1-Seconds Flashes/5 Seconds Off: Drive Over-temperature

Status LED &

Fan Direction

Selector Switch

General troubleshooting

Some issues can be resolved before requesting service. Review the below troubleshooting tips before contacting Customer Service for

support.

Symptom Possible solution(s)

A popping noise is coming from the fan.

Airfoil noise is a result of airfoils that are

not tightened to the specied torque.

Switch off power at the service panel and lock the service disconnecting means. (If

it cannot be locked, fasten a prominent warning device.) Tighten the airfoil hardware

to 29 ft·lb (39.3 N·m). If popping still occurs, verify that the airfoils are not contacting

each other. If the airfoils are contacting each other, please contact Customer Service at

1-877-BIG-FANS.

The fan will not start. Verify the following:

• All wires are securely connected.

• The wall controller has power.

• Supply power is adequate and functional.

If the fan still does not start, contact Customer Service at 1-877-BIG-FANS.

Note: Some motor, gearbox, or drive noise is to be expected and is normal.