Troubleshooting

Problem description	Probable cause	Solutions
The operation LED blinks fast red after a HeatTag self-diagnostics.	Fan clogging detected in the HeatTag sensor.	Clean the fan air inlet (see detailed procedure).
The operation LED turns on red after a HeatTag self-diagnostics.	HeatTag sensor inoperative.	Replace the HeatTag sensor.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Before maintaining the HeatTag sensor: Check that the HeatTag sensor is de-energized. Always use a properly rated voltage sensing device to confirm that the HeatTag sensor is de-energized. Failure to follow these instructions will result in death or serious injury.

NOTICE
INOPERATIVE EQUIPMENT Do not use chemical cleaning products or products containing solvents. Use only a dry air duster. Follow the instructions to position and use the dry air duster. Failure to follow these instructions can result in equipment damage.

Proceed as follows to clean the HeatTag fan air inlet with dry air duster:

Check that the tamper-seal tapes are not damaged. If the tamper-seal tapes are damaged or missing, contact your Schneider Electric local representative.
Disassemble the HeatTag sensor from the DIN rail.
Put the HeatTag rear face on a flat surface, the HeatTag fan air inlet towards you.
Position the dray air duster vertically (spray nozzle to the top), 5 centimeters (1.97 in) away from the fan air inlet and spray dry air for 10 s on the fan air inlet.
Re-install the HeatTag sensor.
Switch on the HeatTag sensor.
Check that the HeatTag sensor is in normal operation (operation LED steady green).
If the problem persists, do the cleaning procedure again.
If the problem persists, replace the HeatTag sensor.