Pentair 522101 solar temperature sensorPentair Genuine OEM Solar Temperature Sensor, 522101 In stock$4199
Pentair 522101 solar temperature sensor
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Pentair Genuine OEM Solar Temperature Sensor, 522101

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$4199
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Quick overview

  • Genuine Pentair part The factory 522101 solar temperature sensor, not a generic thermistor.
  • For Suntouch control systems Listed by Pentair as the solar temperature sensor for Suntouch.
  • Reads the collector Mounts at the solar array so the controller can compare panel temperature against pool temperature.
  • Drives the solar valve Without a good reading the system either never diverts to the panels or runs them when they are cold.
  • Solar position only This is the solar sensor, separate from the water and air sensors on the same controller.
  • Direct replacement Swaps for the original sensor on an installed system, no controller changes needed.
Full description and specifications ↓

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Product details

The Pentair 522101 is the genuine replacement solar temperature sensor for Suntouch control systems. It is the same sensor Pentair fits at the factory.

What it does

Solar heating only helps when the panels are hotter than the pool. The solar sensor sits at the collector array and reports that temperature back to the controller, which compares it with the water reading and decides whether to send flow up to the roof. Get that reading wrong and the system either sits idle on a good day or pushes water through cold panels and loses heat.

When to replace it

Sensors live outdoors in full sun and eventually drift or fail open. If the controller displays a solar temperature that cannot be right, or your solar valve never actuates on a hot afternoon, replace the sensor before you start troubleshooting the valve or the actuator.

Specifications
Brand Pentair
Manufacturer part number 522101
UPC 788379869687
Type Solar temperature sensor
Fits Pentair Suntouch control systems
Position Solar collector
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does the solar sensor actually do?
It reports the temperature at the solar collectors. The controller compares that reading with pool water temperature and only diverts flow to the panels when the roof is warm enough to add heat.
Is this the same as the water or air sensor?
No. Suntouch uses separate sensors for water, air and solar. This is the solar one, part number 522101.
Is it a genuine Pentair part?
Yes. It is the Pentair OEM sensor, part number 522101, UPC 788379869687.
My solar never turns on. Is the sensor the problem?
A failed or disconnected solar sensor is a common cause. If the controller shows an implausible solar temperature, or none at all, the sensor is the first thing to check before suspecting the valve or actuator.
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