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Pentair Kit Solar Temp Sensor | 522101

Pentair SKU: 522101

Pentair Kit Solar Temp Sensor | 522101

Pentair SKU: 522101
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Pentair Solar Temperature Sensor (Black), 10K Ohm | 522101

The Pentair 522101 is a replacement solar temperature sensor used with Pentair pool automation and solar control systems. It measures collector/solar temperature so the controller can determine when solar heat is available and automatically turn solar heating (and related valve control) on or off for efficient pool and spa temperature management.

Key Features

  • Solar temperature sensing: provides temperature input for solar heating decisions and display readings.
  • 10K ohm thermistor sensor: commonly used across Pentair automation/solar platforms that support solar temperature input.
  • Outdoor-ready design: built for rooftop/collector and exterior mounting locations (install per manufacturer guidance).
  • OEM Pentair replacement: correct fit and wiring type for systems that specify part 522101.

Compatibility

  • Used with: Pentair IntelliTouch automation systems (solar sensor input)
  • Used with: Pentair EasyTouch & EasyTouch PL4/PSL4 control systems (solar sensor input)
  • Used with: Pentair SunTouch control systems
  • Used with: Pentair SolarTouch solar controller systems

Tip: If your system uses both a water sensor and a solar sensor, confirm you’re replacing the correct sensor input.

Common Symptoms of a Failed Solar Sensor

  • Solar temperature reads extremely high/low, fluctuates wildly, or shows an error on the automation panel
  • Solar heat won’t engage even when conditions are sunny and the roof/collector is warm
  • Solar heat turns on/off at the wrong times due to inaccurate temperature input
  • Cracked sensor body, brittle cable jacket, or damaged wiring at the sensor end

Specifications

  • Brand: Pentair
  • Part Number: 522101
  • Part Type: Solar temperature sensor
  • Sensor Type: 10K ohm thermistor (automation/solar control sensor)
  • Color: Black
  • Quantity: Sold individually

Installation Notes

  • Turn off power to the automation/solar controller before servicing wiring.
  • Mount the sensor where it best represents collector/solar temperature (per your system’s installation guide).
  • Route the cable away from sharp edges and high-heat sources; secure it to prevent wind movement and abrasion.
  • After replacement, verify the panel displays a stable solar temperature and that solar heating logic operates normally.
  • Some systems may require confirming sensor configuration or calibration settings after replacement.

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Maintenance Tips

  • Inspect sensor wiring seasonally for sun damage, cracking, or loose connections at the control panel terminals.
  • If readings drift or become unstable, check for pinched cable runs, water intrusion at splices, or corrosion at terminal connections.
  • When troubleshooting solar heat issues, verify the solar sensor reading is reasonable before replacing valves or actuators.
Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

  • We do not ship on Saturday or Sunday.
  • Orders totaling more than $300 will require signature confirmation upon delivery.
  • We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
  • Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
  • Expedited shipping options are available at checkout.

Return Policy:

  • Products that are received damaged will receive a refund in store credit.
  • Most products are eligible for return within 30 days of receipt, except where noted below.
  • To initiate a return, please complete an RMA form prior to sending your item back.
  • Original shipping costs are non-refundable and will be deducted from the return credit.
  • Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
  • Some returns will be charged an automatic 15% restocking fee.
  • We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
  • Please complete the return form to receive your RMA number and return shipping label.
  • Chemical products are not eligible for return under any circumstances.
  • The Pentair Colorsync 618031 is not eligible for return.
  • Pool cleaners are not eligible for return.
  • Opened seals and o-rings are not eligible for return.
  • Capacitors are not eligible for return.
  • Plastic popup tools are not eligible for return.
  • Automation components and circuit boards are not eligible for return.
  • If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
  • Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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