By Pentair Pool Products



Part # 473665

Dimensions 53" X 1/8"

Alternate Part #'s _473665, PEN473665

Product Description

Your Source for Swimming Pool & Spa Parts With 40,000 Parts in Stock - INYOpools.com


Probe Thermistor Defrost Sensor


?     Asked on 5/22/2018by Laura

What does this defrost sensor do and is it required on the Thermalflo 700? I just replaced the control board and now have SUCTION TH OPEN alarm which manual says is bad thermistor or control board...

A  Answered on 6/8/2018 by InyoPools Product Specialist Joe S.

The defrost sensor will monitor the ambient temperature. To protect the unit from freezing up.

?     Asked on 11/10/2020by leroy serries

My Ultra temp heat pump model # 460933- would not start and the screen says water temperature 53 degrees . Is it that the probe thermistor defrost sensor is bad or is it the control board ? kindly advise

A  Answered on 11/12/2020 by InyoPools Product Specialist Joe S.

Hello Leroy, you would need to order the Thermistor Probe (471566)

  • Commented on 11/12/2020 by Product Owner

    Thanks. I Will go to your website and purchase it.


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