Owner's Manual

PIR Occupancy Sensor Installation Instruction: MSWSFSP221B (Continued)
Troubleshooting
Lights will not go to High Mode:
• Check all wire connections and verify the load and the ground wires are tightly secured.
• Make sure that the sensor is not obstructed.
• Check light level parameter, to find out the amount of light that the sensor is detecting. Cover the sensor lens to
simulate darkness in the room. If the lights come ON, the setpoint needs to be adjusted. If set for minimum, more
than 1 fc at the sensor of ambient light will cause the lights to be held OFF. See the new settings section for
instructions.
Lights will not go into Low Mode:
• The time delay can be set from a minimum of 30 seconds to a maximum of 30 minutes. Ensure that the time delay
is set to the desired delay and that there is no movement within the sensor’s view for that time period.
• To quickly test the unit operation, enable test mode and move out of the sensor’s view. Lights should fade to
low mode after 5 seconds.
Lights will not turn OFF:
• Cut Off time may be set to “None.”
• Ensure that the Cut Off is set to the desired time and that there is no movement within the sensor’s view for that
time period when the lights are in Low Mode.
• To quickly test the unit operation, enable test mode and move out of the sensor’s view. Lights should fade to low
mode after 5 seconds, and the OFF (if cut off is enabled) after 10 sec.
Lights do not turn ON:
Check for blinking red LED. If the LED blinks with long pulses, as opposed to short pulses, the sensor has reached
its Hold Off setpoint or Photocell Light Level setpoint.
Lights suddenly turn off and will not come back on:
Check for blinking red LED. If the LED blinks with long pulses, as opposed to short pulses, the sensor has reached
its Hold Off setpoint or Photocell Light Level setpoint.
Operating Instructions WP-OP Series
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