Heater Repair Kit for Pentair® MiniMax NT® Thermistors & Sensors

Save $25.01
Optimum Pool TechnologiesSKU: OPT-MMX-KIT

Sale price$79.99 Regular price$105


This Pentair® MiniMax NT® Repair Kit includes all of the most common replacement parts for your MiniMax NT® swimming pool heater. Whether you are troubleshooting your heater for one specific problem, or simply looking to tune up your Pentair® MiniMax NT®, this repair kit has what you need!

This Kit Includes:

Included Parts Description:

OPT-471566: The Pentair® 471566 Heat Pump & Heater Thermistor Probe is a common replacement part for your Pentair® MiniMax NT® pool heater. Often times your probe will need to be replaced when your heater is displaying error code "E02", or displaying "HI" and your heater will not turn on. It is also very common for rodents to chew through the yellow wire of this particular part.

OPT-473605: The Pentair® Heater Pressure Switch is a safety mechanism designed to detect water flow in your heater using pressure.

OPT-471587-A & OPT-471694-B: The Pentair® High Limit Switches are important switches in your MiniMax NT® pool heater, and is used to detect when your water temperature has exceeded a safe level (115°F - 471587)(150°F - 471694).


  • Compatibility: Pentair® Mini Max NT® Pool Heaters
  • Replaces: 471566, 473605, 471587, 471694.
  • Wires not included


  • Manufacturer: Optimum Pool Technologies, Inc.
  • Model: Replaces: OPT-471566, 473605, OPT-471587-A, OPT-471694-B.
  • Shipping weight: 1 lb.
Statements of compatibility here are 100% guaranteed by Pool Guy Supply, Inc. and are not attributable to or made by Hayward® or any other original equipment manufacturer (OEM) of products sold on this website.

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Customer Reviews

Based on 1 review
Perfect kit for my 10

Perfect kit for my 10 year old Pentair MiniMax NT gas heater. Price great, fast shipping and delivery. All started with my heater not warming water past 85 degrees. Did some homework on the Internet. Was looking for a thermostat. But, found this kit and based on inspection of all temp probes, decided to replace them all. Very easy, saved some money doing it myself. Had some teflon tape for the threads. Regular wrenches/pliers. Super simple, about 30 minutes.

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