Pentair IntelliFlo VS+ SVRS Priming Failure

The priming error alarm on the Pentair IntelliFlo VS+ SVRS indicates the pump failed to reach a primed state within the configured maximum priming time. Understanding how this pump's priming logic works—and the critical SVRS safety implication during priming—is essential before attempting any corrective action.

How Priming Works on the VS+ SVRS

When priming is enabled, the pump uses its flow-sensing technology to determine whether it has achieved a prime each time it starts. The sequence is:

1. The pump ramps to 1800 RPM and pauses for three seconds to check for sufficient water flow in the basket.
2. If flow is insufficient, the pump ramps to the Max Speed setting and holds there for the Priming Delay time (default 20 seconds).
3. If still insufficient, the pump runs at Max Speed for the full Max Priming Time (default 11 minutes).
4. If the pump is not determined to be primed within the Max Priming Time, it stops and generates a Priming Alarm for 10 minutes, then attempts to prime again.
5. After five failed attempts, the pump generates a permanent alarm that must be manually reset by pressing the Reset button.

Note: The IntelliFlo VS+ SVRS will not start if the impeller is already rotating.

Priming Dry Alarm

If there is an insufficient amount of water in the basket at the start of priming, the pump reports a Priming Dry Alarm within seconds of beginning the priming cycle. The basket should be filled with water and the pump restarted when this alarm occurs. Unlike the standard IntelliFlo, the VS+ SVRS will attempt to restart after 10 minutes following a Priming Dry Alarm.

Causes and Corrective Actions

The following causes and corrective actions come directly from the General Troubleshooting table in the official manual.

Air Leak in Suction Line (PRIME ERROR displayed)

Check suction piping and valve glands on any suction gate valves. Secure the lid on the pump strainer pot and make sure the lid gasket is in place. Check the water level to make sure the skimmer is not drawing air.

Not Enough Water

Ensure that the suction lines, pump strainer, and pump volute are full of water before starting the pump.

Pump Does Not Come Out of Prime

Adjust the Primed Sensitivity to a higher setting. The default setting is 1%. Increasing this number decreases the amount of flow needed for the pump to sense that it is primed. If the pump basket is visibly full of water and flowing but the pump still won't exit priming mode, increase the Primed Sensitivity.

Pump Strainer Clogged

Clean the pump strainer pot.

Pump Strainer Gasket Defective

Replace the gasket.

Priming Menu Settings

Resetting the Alarm

When the control panel displays a priming alarm:

1. All control panel buttons are disabled until the alarm is acknowledged with the Enter button.
2. Once the fault condition has been resolved, press the Reset button to clear the alarm.
3. If the pump has generated a permanent alarm after five failed attempts, press Reset to clear it after correcting the underlying cause.

Important Notes for the VS+ SVRS

• The Maximum Speed setting controls the priming speed. The priming feature will not override the Max Speed setting.
• The CAUTION marker on the Max Speed menu reads: "The Maximum Flow rate setting should be set so the system never operates at or above a 25" vacuum."
• When connected to an automation system and the Maximum Prime Time feature is enabled, it remains active.
• This pump is capable of generating system pressures up to 50 PSI. All system components must be rated to withstand at least 50 PSI.