Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Jandy FHPM1.0 - big drop in suction

  1. Back To Top    #1

    Jandy FHPM1.0 - big drop in suction

    Hello TFP family,

    I had a nice algae bloom when I opened this year so I've been slamming - the pool has gotten "almost" clear after a week of 24/7 SWG boosts and filtering. This morning I went out and saw the skimmer basket floating, although the pump was still going. Uh oh.

    So I cleared the couple leaves in that basket, then went to the pump strainer - a little gunk in there, cleaned. Took cartridge filter apart and thoroughly cleaned all cartridges. Everything back together, and the pump is still very anemic - can barely get water up into the pump basket, and barely through the pump at all, the filter housing took forever to fill and when it finally did the level of water in the pump basket dropped, raised, dropped... obviously the pump is still struggling.

    So I searched and saw a recommendation from JasonLion to clear the impeller:

    Jandy FloPro working harder now FHPM1.0-2

    I reached my hand in and felt it, there was nothing caught up on it.

    That thread ended - I'm wondering if anyone has any additional steps I can take to troubleshoot this pump?

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Jandy FHPM1.0 - big drop in suction

    What is the psi when the pump is running? What does your water look like? Can you post current test results?
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Re: Jandy FHPM1.0 - big drop in suction

    Well, I feel like a tool. It turned out to be my skimmer basket somehow got miraculously caught in a tipped position, slightly holding the flapper to the skimmer closed, creating air infiltration. I still don't understand how the skimmer basket was floating when I checked it this morning ... maybe we had a brief power outage that allowed the basket to float out? That mystery remains, but for now the pump seems to be working ok.

    I do have an issue with my psi - my reading shows in the 'dirty' range when I've already cleaned it very well with a power washer. But I was just reading some TFP posts about cleaning the cartridges with dishwasher detergent, so I'm going to try that and a few other troubleshooting steps before I bother you gentlemen again.

    Thanks - chalk it up to newbieness.

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Jandy FHPM1.0 - big drop in suction

    A big rock (bigger than the hole in the bottom) will weight down a skimmer basket nicely.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

Posting Permissions

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