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TROUBLESHOOTING
WARNING –
To avoid dangerous or fatal electrical shock, turn OFF power to all electrical
After completing all mounting and wiring procedures and main power is available, if the actuator does NOT respond
as expected, the following procedure(s) may help in identifying the problem.
Symptom
Actuator does
not move when
commanded
to do so.
Supply and
controls are
measured to
be correct, but
actuator still does
not move.
Motor is extremely
hot to the touch.
Actuator does not
stop at correct
position at either
end of travel
Back to TOC
Hayward Flow Control
1-888-HAY-INDL (1-888-429-4635)
equipment before working on electrical connections. If it is necessary to
troubleshoot with live power to the actuator, please use EXTREME CAUTION,
and follow your company's safety protocols and procedures at all times.
Target
Power Source
Control Problem
Wire Sizing
Overtorque
Insuf cient power
supply and/or
incorrect wire size
during installation.
Cams improperly
set.
Control "noise" or
excessive duty cycle
Travel cams and/or
mechanical stops not
positioned correctly
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
www.haywardflowcontrol.com
Measure incoming power AT the actuator terminal block.
Reference the correct wiring diagram.
Generate move commands by the eld device. Measure correct
voltage changes between HOT and terminal #6 (CCW) and HOT
and terminal #4 (CW).
Check for correct wire size per Wire Sizing Chart.
Remove the actuator from the driven device. If the actuator now
moves, the torque required by the mechanical device exceeds
that of the actuator. Increase actuator size.
With the actuator removed from the mechanical equipment,
manually rotate the valve or damper through its intended range
of travel to check for mechanical problems.
Measure the voltage between terminals 1 & 2 WHILE
commanding the actuator to move. The measured voltage
cannot drop more than 10%.
REMOVE POWER. Check to see if cams rotate freely on the
cam shaft using your nger. Cams MUST be secure and set
according to the procedures in the Adjusting CW/CCW End of
Travel section.
Check for stray voltage fl uctuations on the incoming control
signals. The on/off line voltage actuators have a maximum 25%
duty cycle. While the low voltage models have a 75% duty cycle.
Check for parallel wiring of multiple on/off actuators. Review the
site as-built wiring diagrams to verify.
Reset end-of-travel cams and/or mechanical stops as detailed
in the Adjusting CW/CCW End of Travel section.
ON/OFF MODELS
Action
HRSN3FSIOM Rev E ECR 132V
Page 22 of 32
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