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Thread: Second issue with our Hayward H400ED2 pool heater

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    Manahawkin
    Posts
    6

    Second issue with our Hayward H400ED2 pool heater

    Our first issue with this unit I resolved 2 weeks ago or so with the help of you folks here. I was getting an IF code and wound up replacing the damaged igniter, that didn't do the trick so I bought a new control panel from Pool zoom and it worked like a brand new unit, until today. I didn't use the heater for a week or so because of some rain and the weather was hot. I selected the temperature setting (we have a digital control pad). The heater sounded like it tried to ignite once and then threw an LO code that won't be cleared. Now what? I looked over the manual and it's showing everything from insufficient flow, to some electrical issues. I cleaned the skimmer baskets and the basket before the return into the filter. I back washed and rinsed the filter and same "LO" code. Any suggestions before I just break down and call somebody to fix it?

    Thanks,

    Bob

  2. Back To Top    #2

    Join Date
    Jun 2015
    Location
    Manahawkin
    Posts
    6

    Re: Second issue with our Hayward H400ED2 pool heater

    **UPDATE** I back washed and rinsed 4 or 5 inches out of our nearly 30,000 pool this past hour and the heater works. Back washed 3 separate times before dumping the last big amount out. Anyway it's working. We had a bad wind storm a few days ago that loaded the the pool with pine needles and lost power for nearly 2 days so the sand in the filter must have been pretty dirty.

    Just an FYI

    Bob

  3. Back To Top    #3

    Join Date
    Aug 2012
    Location
    Orlando, FL
    Posts
    678

    Re: Second issue with our Hayward H400ED2 pool heater

    Thanks Bob, that info will be useful to someone in the future. I am glad you got it working!
    Sharkline Reprieve 15x52 (3/14). Still using Intex 2650 Sand Filter with Hayward Power-Flo Matrix 3/4 HP pump (6/15). Solar Cover cut into strips for easy removal, (2) 2*10 Space Saver solar panels. Swim Jet HD Robot (by Aquabot) (3/15). Chlorine Liquidator (4 gal). 4 person hot tub. Hard pipe is the way to go for improved flow! Retired Lil Shark (3/15). Starite Max E Therm 333k BTU Propane Heater w/ 24 gal tank (7/15).

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