Pentair 470180 thermistor probe for MiniMax Plus pool heatersPentair Thermistor Probe for MiniMax Plus Heaters, 470180$4799
Pentair 470180 thermistor probe for MiniMax Plus pool heaters
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Pentair Thermistor Probe for MiniMax Plus Heaters, 470180

Ask a questionMPN 470180
$4799
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Quick overview

  • Genuine Pentair Factory part 470180, not a generic sensor.
  • MiniMax Plus heaters Listed as a heater part for the Pentair MiniMax Plus range, 150 through 400.
  • Temperature sensing The thermistor is what tells the control board how warm the water actually is.
  • A drifting probe misreads the pool When the sensor ages, the heater heats to the wrong temperature or cycles at the wrong time.
  • Direct replacement Swaps for the original thermistor probe on the heater it was made for.
  • Order by part number 470180 identifies the correct probe, since heater sensors look alike across models.
Full description and specifications ↓

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Product details

The Pentair 470180 is the genuine thermistor probe listed as a heater part for the Pentair MiniMax Plus range, sizes 150 through 400.

What it does

A thermistor changes resistance as it warms and cools. The heater control reads that resistance and treats it as water temperature, using it to decide when to fire the burner and when to stop. Everything the heater does about temperature depends on this one signal being accurate.

When to suspect it

If the pool runs noticeably hotter or cooler than the set point, if the display disagrees with a thermometer in the water, or if the heater cycles on and off with no clear reason, the temperature sensor is a reasonable place to look. Confirm the part number against your heater before ordering, since heater probes look much alike from model to model.

Specifications
Brand Pentair
Manufacturer part number 470180
UPC 788379696177
Type Thermistor probe
Part category Pool heater part
Fits Pentair MiniMax Plus heaters, 150 through 400
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

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

What does the thermistor probe do?
It is the temperature sensor. Its resistance changes with water temperature, and the heater control reads that to decide when to fire and when to stop.
Which heaters does it fit?
It is listed as a heater part for the Pentair MiniMax Plus range, sizes 150 through 400. Confirm the part number against your heater before ordering.
What are the symptoms of a bad probe?
Water that heats well past or well short of the set temperature, a temperature reading that does not match a thermometer in the pool, or a heater that short cycles for no obvious reason.
Is it a genuine Pentair part?
Yes. It is the Pentair OEM thermistor probe, part number 470180.
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