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Thread: Heat pump high pressure shut off

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    Heat pump high pressure shut off

    In addition to my set up below I have an aqua heat heat pump. The heater has worked well twice this year already to heat up a spill over spa with no issues. Today when I turned it on, a problem that occured several times last season occurred again. The heater will not kick on into heating mode. The fan gOes on and the unit tries twice to kick into heat mode and then shuts off with the hp warning in the status window. The problem is that my pump pressure using a new guage this year has never hit 20 and it worked yesterday under identical conditiOns. The unit is only 4 years old. Any ideas? I'm stumped.
    40 x 20 Freeform vinyl 30k gallon, heat pump, Hayward sand filter using zeosand, fiberglass spillover spa.

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    Join Date
    Aug 2010
    Austin, TX

    Re: Heat pump high pressure shut off

    On an aquacal, the HP error code means: "Low water flow, defective high pressure switch, or defective wiring"
    38K Gallons IG, Intelliflow VS-SVRS, 30GPM 24/7, 72sqft DE Filter, Spectralight UV, Jandy C1900 driving Liquid Chlorine and Acid (toys, I know..), Jandy LXi gas heater, Aquacal SQ175 Heatpump, Riverflow Competition swimmer, Jandy automation, Touch and iAqualink, Pebblesheen | The Build

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