34
10
TROUBLESHOOTING
Set fan controller to 75% and “FWD”
Does the fan spin?
Is the LED light
blinking?
Can the speed vary from
0-100% properly?
Switch the fan to
“REV”. Allow it to ramp
down and back up.
Does it spin in reverse?
Yes
Check incoming power supply
and compare to fan rating label.
Please note all delta power
configurations are incompatible with
S&P fans
Is the input voltage correct?
Fix incorrect
wiring.
Is the fan making any
noise?
End of troubleshooting.
Yes
Yes
Yes
No
No
No
Check splices and wiring
at the controller.
Is the Wiring correct?
No
Fix incorrect wiring.
No
Yes
Yes
No
Check controller wiring sheet.
Is the wiring correct?
Fix incorrect wiring.
No
Yes
Check all brackets and bolts. Ensure bolts are torqued to the proper
rating and brackets are free to spin without collisions.
KEY
Start
Question
Process
Question
Solution
Consult factory.
Yes
Continued on page 35
Continued on page 35
Consult factory.
No