Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: E command 4 - bad board?

  1. Back To Top    #1

    Join Date
    Mar 2010

    E command 4 - bad board?

    The heater isn't turning on and the e command isn't keeping time.

    Should there be a voltage across the heater wire? There isn't and I'm afraid I have a bad board.

    It is also losing a couple hours over a few days.
    ~20,000 inground plaster pool
    1.5 HP Hayward
    Sand Filter

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: E command 4 - bad board?

    Sorry for the delayed response, but this is a very specific question that few members will have experience with.

    If it can not even keep time, clearly there is something wrong with it, but I do not know what part(s) you would need.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011

    Re: E command 4 - bad board?

    When the heater function is activated you would see 24v.

    As for the unit not keeping time, I believe there is a backup battery on the board, just like a computer, and it might be failing.
    Paul A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. 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,

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts