Overhead Ceiling Fans
41
®
Quick Start
Guide
Gener
al
Information
Pr
e-Installation
Mechanical
Installation
Fir
e System
Integr
ation
Electrical
Installation
Fan
Netw
orking
Oper
ation And
Maintenance
Troubleshooting
Refer
ence
General Troubleshooting
Problem: Unknown, Initial Troubleshooting Steps.
1
Is supply power turned on at all circuit breakers and fan
disconnects?
Yes
No
No supply power to fans.
Turn circuit breakers and
disconnects to “on” position.
2
Is there line voltage across L1 and L2, L2 and L3, L1 and
L3 on VFD power terminals?
Yes
No
Supply power wiring not connected or fuses damaged/
missing.
Connect proper power supply to fan and confirm
that fuses are installed/functional. Test and replace fuses if
necessary. Refer to wiring diagram and fuse sizing table on
page 33.
3
Are line voltage measurements /- 10% of nominal
voltage across L1 and L2, L2 and L3, L1 and L3 on VFD
power terminals?
Yes
No
Phase imbalance or incorrect supply power applied to fan.
Correct supply power wiring to fan.
4
Were fans and controls installed using only the provided
networking components (green shielded CAT-5e cables,
black shielded 3-way RJ45 splitters) or components that
comply with specifications on page 34?
Yes
No
Networking components may be defective, incorrectly
wired, or do not meet required specifications.
Replace
with provided components or components that comply
with specifications on page 34.
5
Are 3-way RJ45 splitters installed with the single-port side
connected to black cable inside fan downtube?
Yes
No
Incorrect splitter orientation.
Unplug splitter and
reconnect in the proper orientation.
6
Have all CAT-5e cable connections been unplugged and
reconnected to ensure that cables are fully seated (will
hear a “click” when fully seated)?
Yes
No
Loose or misaligned CAT-5e cable connection.
Unplug
and reconnect all CAT-5e cable connections.
7
Are the dipswitches on all fan VFDs set as shown on pages
36-39?.
Yes
No
Incorrect dipswitch settings on one or multiple VFDs.
Adjust dipswitches as shown on pages 36-39. All fans
must have a unique Modbus address setting on dipswitch
bank 3.
8
Are motor power, motor ground, and hall cables connected
to all VFDs?
Yes
No
No connection between motor and VFD.
Connect motor
power, motor ground, and hall cable to VFDs. Refer to
instructions on pages 30-32.
9
Have motor power and hall cables been unplugged and
reconnected to ensure that they are connected in the
proper orientation and fully seated on all VFDs (will hear a
“click” when fully seated)?
Yes
No
Loose or misaligned motor power or hall cable
connection.
Unplug and reconnect motor power and hall
cables. Refer to pages 30-32 for correct orientation.
10
Does communication wiring on VFD of fan 1 (directly
connected to control via shielded CAT-5e cable) match the
wiring diagram for fan 1 on pages 36-37?
Yes
No
Communication wiring on fan 1 is incorrect.
Turn off
supply power to fan and correct wiring as shown in wiring
diagram on pages 36-37. Then turn supply power on.
11
Does communication wiring on VFDs of all remaining fans
match the wiring diagram for all remaining fans on pages
38-39?
Yes
No
Communication wiring on one or multiple fans is
incorrect.
Turn off supply power to fans and correct wiring
as shown in wiring diagram on pages 38-39. Then turn
supply power on.
12
Do fans operate as expected?
Yes
No
Check detailed troubleshooting steps on the following
pages or contact the factory.
Everything is working properly.
DANGER
Disconnect and secure to the ‘OFF’ position all
electrical power to the fan prior to inspection or
servicing. Failure to comply with this safety precaution
could result in serious injury or death.
DANGER
Pour écarter les risques de blessure grave ou de mort,
débrancher et verrouiller l’alimentation électrique en
position « Arrêt » avant tout contrôle ou entretien.
Each fan bears a manufacturer’s nameplate with the
fan’s model number and a unique serial number for
identification. This information will assist the local
representative and the manufacturer in providing service
and replacement parts.
IMPORTANT:
Do not remove VFD circuit board from
aluminum heatsink under any circumstances. Removal
of circuit board will result in voiding of the fan warranty.
Troubleshooting
