Pentair Replacement IntelliChlor® Plus and LT Sensor Board 523769
Pentair
SKU: 523769
Pentair IntelliChlor Plus & LT Sensor Module Replacement Kit | 523769
The Pentair 523769 Sensor Module Replacement Kit is a genuine OEM replacement assembly for compatible Pentair IntelliChlor Plus and IntelliChlor LT salt chlorine generators.
This replaceable 3-in-1 sensor module monitors water flow, water temperature, and conductivity (salinity), helping the salt chlorine generator determine appropriate operating conditions and maintain reliable system performance.
The modular design allows the sensor assembly to be replaced independently without purchasing an entirely new salt cell when the original sensor module has failed.
Product Features
- Genuine Pentair OEM: Original manufacturer replacement sensor module.
- 3-in-1 Sensor Assembly: Combines flow, temperature, and conductivity sensing.
- IntelliChlor Plus Compatibility: Fits Plus30, Plus40, and Plus60 models.
- IntelliChlor LT Compatibility: Fits LT15 and LT25 models.
- Replaceable Modular Design: Allows individual sensor module servicing.
- Improved Salinity Monitoring: Provides conductivity measurements used to determine salt levels.
- Installation Hardware Included: Comes with an O-ring, six Torx screws, and a Torx screwdriver bit.
Product Specifications
- Manufacturer: Pentair
- Manufacturer Part Number: 523769
- Distributor SKU: PAC-451-3407
- Product Type: Replacement Sensor Module Kit
- Compatible Series: IntelliChlor Plus and IntelliChlor LT
- Sensor Functions: Water Flow, Temperature, Conductivity
- UPC: 788379918798
- Manufacturer Warranty: 1-Year Limited
- Selling Quantity: 1 Sensor Module Kit
Compatible Pentair Salt Chlorine Generators
- Pentair IntelliChlor LT15
- Pentair IntelliChlor LT25
- Pentair IntelliChlor Plus30
- Pentair IntelliChlor Plus40
- Pentair IntelliChlor Plus60
Compatibility Notice: Pentair 523769 is specifically designed for the newer IntelliChlor Plus and LT series. It is not listed as a replacement for the original IntelliChlor IC15, IC20, IC40, or IC60 sensor assemblies.
Three Sensors in One Replaceable Module
The Pentair 523769 combines three essential monitoring functions into one assembly:
- Flow Sensor: Monitors water movement through the salt chlorine generator to support safe chlorine production.
- Temperature Sensor: Monitors pool water temperature for proper system operation.
- Conductivity Sensor: Measures water conductivity to estimate salt concentration.
Common Sensor Failure Symptoms
A malfunctioning sensor module may cause warning messages or incorrect operating readings. Potential symptoms include:
- SENS ERR warning message
- Incorrect or zero salinity readings
- WAITING FLOW message despite adequate water circulation
- Confirmed sensor module corrosion or electronic failure
These symptoms can have several causes. Follow Pentair's troubleshooting procedures before replacing the sensor module.
Replace the Sensor Without Replacing the Complete Cell
Unlike older salt chlorine generator designs, the IntelliChlor Plus and LT series features individually serviceable components.
The 523769 kit allows replacement of the sensor module while retaining the existing cell and controller when those components remain functional.
This can reduce repair costs and minimize unnecessary equipment replacement.
Related Pentair IntelliChlor Products
- Pentair 520595 – IntelliChlor Replacement Union Kit – Genuine Pentair replacement plumbing unions, sold as a set of two.
- Pentair 523730 – IntelliChlor Plus30 Salt Chlorine Generator – Complete replacement salt chlorine generator cell for pools up to 30,000 gallons.
- Pentair 523770 – IntelliChlor Plus Controller Assembly – Find the separately replaceable controller for compatible IntelliChlor Plus systems.
- Pentair 523759 – IntelliChlor Accessory Kit – Search for related controller and sensor replacement accessories.
Installation Recommendations
Installation should be performed according to Pentair's official IntelliChlor Plus and LT service instructions.
- Disconnect electrical power before servicing the salt chlorine generator.
- Turn off the circulation pump and relieve plumbing pressure.
- Verify the replacement module is compatible with the existing cell.
- Inspect the sensor mounting area for debris, corrosion, or damage.
- Install the supplied O-ring and replacement module according to Pentair's instructions.
- Secure the assembly using the provided Torx screws.
- Restore operation and verify normal sensor readings.
Safety: Never bypass the flow sensor or operate the salt chlorine generator without adequate water circulation. Follow all manufacturer electrical and installation safety procedures.
Package Contents
- One (1) Pentair IntelliChlor Plus / LT Sensor Module
- One (1) Sensor Module O-Ring
- Six (6) Torx Mounting Screws
- One (1) Torx Screwdriver Bit
Not Included: Complete salt chlorine generator, replacement electrolytic cell, controller assembly, or power center.
Selling Quantity: One complete Pentair 523769 Sensor Module Replacement Kit.
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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