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Thread: Hayward heater error code PF

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    Hayward heater error code PF

    My hayward H400 heater fan started running 24/7 a couple of weeks ago and now flashes error code "PF" which is supposed to mean either reversed polarity, low voltage, or improper ground path. The heater has worked fine for two years and no one has changed anything related to the electrical system. Any one else have a similar problem?

    For those considering buying Hayward pool equipment consider this: when I built my pool/spa two years ago I had all top of the line Hayward equipment installed - ecostar pump, h400 heater, swimclear 4030 filter, t-15 salt cell, all goldline control vales, pro logic control panel with aqua pod, and led lights. Luckily I received the hayward 3 year warranty as everything was installed by a "Hayward authorized installer" since in two years I have had to replace two water temperature sensors, the salt cell, the control head on the pump, and now the heater is broke. Each time the warranty repairman shows up it costs me $95.00 for the service call (parts are free). Also my salt cell which was replaced in May is doing the same "low salt" reading that it did before the last one went out. And yes, I clean it at least every 60 days. I shutter to think how much this equipment is going to cost me when my warranty ends next spring!

    And one other observation - the Hayward user manuals are very poorly written and not user friendly - I have spent countless hours going though them when trying to fix a problem or program my system. The manuals are not written for the non professional and using the equipment can be very frustrating at times.

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    TFP Guide

    Join Date
    Jun 2012
    western NY

    Re: Hayward heater error code PF

    Could be corrosion on a terminal is creating enough resistance. Turn off the power supply and check to be sure all connections are clean and secure.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Hayward heater error code PF

    How did you fix it? Same problem here..

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    In the Industry

    Hayward Pool's Avatar
    Join Date
    Oct 2014

    Re: Hayward heater error code PF

    Hi Kevin, please call our tech line at 908-355-7995
    Hayward Pool Tech
    80+ Years of Technologically Advanced Pool Product Manufacturing

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    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011

    Re: Hayward heater error code PF

    godsman2000, This is an old thread. For future reference, it might be better to just go ahead and open a new thread especially if the thread you want to reply to doesn't actually have an answer in it. Just food for thought for when you come back. PF code means, Electrical supply wiring error...This code will display if 120V polarity is reversed, low voltage is detected, or if the ground path is not sufficient. Reset is immediate after error is corrected. Have you tried resetting the breaker for the heater to see if the error is cleared? Also, has any work been done on the unit lately?
    Paul If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,
    Check out some videos on my YouTube channel -

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