Pentair 475975 control board replacement kit for the ETI 400 heaterPentair Control Board Replacement Kit for ETI 400, 475975 In stock$16399
Pentair 475975 control board replacement kit for the ETI 400 heater
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Pentair Control Board Replacement Kit for ETI 400, 475975

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$16399
In stock
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Quick overview

  • Genuine Pentair Factory kit 475975, not a rebuilt or aftermarket board.
  • ETI 400 specific Made for the Pentair ETI 400 heater. Confirm the model on the heater label before ordering.
  • Supplied as a kit Pentair sells the board as a replacement kit rather than a loose board.
  • The brain of the heater The control board reads the sensors and runs the ignition and firing sequence.
  • Common failure symptoms A heater that will not start, drops out mid cycle, or shows nothing on the display can point at the board.
  • Rule out the simple parts first The ignition control module and high limit switch are separate parts and are cheaper to check.
Full description and specifications ↓

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Product details

The Pentair 475975 is the control board replacement kit for the ETI 400 pool heater. It is the genuine factory part, supplied as a kit rather than a bare board.

What the board does

The control board is where the heater makes its decisions. It reads the sensors, runs the ignition sequence, and shuts the heater down when something is out of range. When it fails, the heater can refuse to start, quit part way through a cycle, or go dark at the display.

Before you replace it

A board is not the cheapest place to start. Confirm gas supply and power first, then check the ignition control module and the high limit switch, both of which are separate Pentair parts. If those test good, the control board is the next step.

Fitment

This kit is for the Pentair ETI 400. Read the model off the heater rating plate and match it before ordering.

Specifications
Brand Pentair
Manufacturer part number 475975
UPC 788379878221
Type Control board replacement kit
Fits Pentair ETI 400 heater
Shipping weight 0.25 lb
Ships Parcel

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Questions and answers

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

Which heater does this fit?
The Pentair ETI 400. Check the model on the heater rating plate before you order, since Pentair uses different boards across its heater lines.
Is this the ignition control module?
No. The ignition control module for the ETI 400 is a separate Pentair part. This listing is the control board kit.
Is it a genuine Pentair part?
Yes. It is the Pentair factory kit, part number 475975.
My ETI 400 will not fire. Is the board the problem?
It can be, but it is not the first thing to check. Confirm gas and power, then look at the ignition control module and the high limit switch, and go to the board once those check out.
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