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Thread: Hayward Ecostar 3400SVP pump Drive Error

  1. Back To Top    #41
    mas985's Avatar
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    Re: Hayward Ecostar 3400SVP pump Drive Error

    Either it is poor quality components used in the drive or the motor was simply under designed for the wet end. Keeping the RPM below 3000 RPM might help.

    The Hayward TriStar and MaxFlo VS pumps don't seem to have these same issues but they are smaller wet ends too.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  2. Back To Top    #42

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    Re: Hayward Ecostar 3400SVP pump Drive Error

    Quote Originally Posted by mas985 View Post
    Either it is poor quality components used in the drive or the motor was simply under designed for the wet end. Keeping the RPM below 3000 RPM might help.

    The Hayward TriStar and MaxFlo VS pumps don't seem to have these same issues but they are smaller wet ends too.
    Mark,

    There's multiple versions of the Tristar [1.85HP and 2.7HP] and there's one you can buy on the I-net and the others from dealers. The latter is supposed to have better seals and a 4 yr vs 3 yr warranty.

    There seems to be a lot more of the 1.85 installs than 2.7. If you search 2.7HP Tristar install reviews, you get zero. Do you have any experience or feedback on the 2.7HP tristar installs or do you know where you can obtain any objective/true field experience feedback on them? I'm pretty sure there's nothing more than 18-24 months on them either way bc of the recent redesign. One TFP user stated the tristar had an altogether diff controller design and used either used different current [AC vs DC] technology. I think it is even in this thread.

    Thanks, tstex

    Here's the quote from rcy re current types:

    "I also see (reading the Tristar Technical Guide and the Ecostar Technical Guide, that the Tristar has DC voltage too high and too low messages but the Ecostar has AC too high and too low messages. Does the fact that one is using DC and the other AC make any difference?"
    InGround 15K gal, 18'x30' 3.5' to 5.5' depth w/ 9'x9' spillover Spa, Pebblesheen w/ Travertine, Hayward 3 HP VSP, Hayward C4030 Cartridge, Hayward 1.5 HP for 2 Scupper columns, ProLogic, PL-PS-8 Panel, Hayward H400FD 400K BTU Heater, 3 ColorLogic LED, Spa Blower, TF-100 w S-Stick, QC Tiger Shark, Autofill If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #43
    mas985's Avatar
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    Re: Hayward Ecostar 3400SVP pump Drive Error

    The basic VFD/VPD technology is going to be the same for all VS pumps. What may differ is the components used and the power section design for the load. For the VS motor drive, the AC is directly converted to DC power via rectifiers then goes directly into the IGBTs which switch the DC power back into PWM 3-phase AC power. So the power delivered to the motor only touches the rectifiers, a high power capacitor, inductor and the IGBTs. Normally, if a VFD fails, I would first suspect the IGBTs because they are very sensitive to voltage spikes and are carrying a large amount of current (on higher speeds). However, it isn't entirely clear which component is failing. Some have shown pictures of failures but I cannot tell which part that is.

    VFDs have been around for a very long time so the technology is well developed. However, they are very sensitive to the design and the harmonics generated in the high power waveforms. Any mismatch in the power cables can cause huge power spikes frying the IGBTs. Running at lower RPM and lower power may help this situation if there is a design issue.

    The controller is not unlike other controllers. It will have it's own power supply, micro-controller and drivers but everything is fairly low power so not much should go wrong with this although it could be influenced by the high power switching in the motor drive if the shielding is not sufficient.

    Note that because of the way VFDs are designed, one can monitor AC or DC or both voltages for spikes. The technology is the same, but the monitoring can be different.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  4. Back To Top    #44

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    Re: Hayward Ecostar 3400SVP pump Drive Error

    Thanks Mark
    InGround 15K gal, 18'x30' 3.5' to 5.5' depth w/ 9'x9' spillover Spa, Pebblesheen w/ Travertine, Hayward 3 HP VSP, Hayward C4030 Cartridge, Hayward 1.5 HP for 2 Scupper columns, ProLogic, PL-PS-8 Panel, Hayward H400FD 400K BTU Heater, 3 ColorLogic LED, Spa Blower, TF-100 w S-Stick, QC Tiger Shark, Autofill If you enjoyed your TFP experience, please consider donating to Support TFP!

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