Pentair IntelliFlo XF Overheat Alarm
The overheat alarm on the Pentair IntelliFlo XF indicates the drive temperature has exceeded the threshold that triggers protective action. The pump responds automatically to protect itself before fully stopping. All control panel buttons are disabled until the alarm is acknowledged with the Reset button.
How the Overheat Alarm Works
If the drive temperature gets above 130°F (54.4°C), the pump will slowly reduce speed until the over temperature condition clears. The pump does not stop immediately — it gradually lowers its operating speed to allow the drive to cool while continuing to run. The alarm clears automatically once the temperature drops below the threshold.
Thermal Mode
Thermal Mode is a related feature that runs the pump at a preset RPM when the drive's internal temperature drops below a configured minimum. The sensor for Thermal Mode is in the drive, on top of the motor.
When Thermal Mode is active, the motor will run at the preset RPM until the drive internal temperature increases above the minimum. The default Thermal Mode speed is 1000 RPM and the default pump temperature set point is 40°F (4.4°C). The temperature can be set between 40°F and 50°F (4.4°C–10°C).
Important Note from the Manual
Thermal Mode is for protection of the pump. Do not depend on Thermal Mode for freeze protection of the pool. Certain situations could cause the pump to sense a different temperature than actual air temperature. For example, if the pump is located indoors, the temperature of the room does not indicate the outdoor temperature. The pump does not sense water temperature. Your automation system's air temperature sensor should be used to sense actual temperature.
Thermal Mode and Automation Systems
The pump's internal thermal protection is disabled when connected to an automation system. Thermal protection is provided by selecting YES at the ON WITH FREEZE portion of the circuit function menu in the IntelliTouch control system. To re-enable the internal thermal protection, the power to the drive must be cycled off then back on.
Corrective Actions
The troubleshooting chart in the manual lists the following corrective actions when an overheat condition is present:
Check Ventilation
- Increase ventilation around the pump enclosure
- Reduce ambient temperature near the pump
- Ensure the pump is not installed in an enclosed space without adequate airflow
Check Voltage
- Check voltage at motor terminals and at the panel while the pump is running
- If voltage is low, consult the wiring instructions or the power company
- Check line voltage: if less than 90% or more than 110% of rated voltage, consult a licensed electrician
Check Connections
- Tighten any loose wiring connections
- Check for loose connections at the motor terminals and the circuit panel
Check for Mechanical Issues
- Turn power to the motor off
- Check for proper voltage
- Check for a proper impeller or impeller rubbing against the volute
Thermal Mode Settings
| Setting | Default | Range |
|---|---|---|
| Thermal Mode Enable/Disable | Enabled | Enabled / Disabled |
| Set Speed | 1000 RPM | 750–3450 RPM |
| Pump Temperature | 40°F (4.4°C) | 40°F–50°F (4.4°C–10°C) |
To access Thermal Mode settings: press Menu, scroll to Thermal Mode, press Select.