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AquaTerra Spa Error Messages Explained: OH, HL, FLO, AOH, PRR, and What to Do About Each

AquaTerra Spa Error Messages Explained: OH, HL, FLO, AOH, PRR, and What to Do About Each

Posted by HTSS Team on Sep 28th 2026

AquaTerra Spa Error Messages Explained: OH, HL, FLO, AOH, PRR, and What to Do About Each When your AquaTerra spa displays a short code instead of the water temperature, it is not being cryptic. It is telling you exactly what the control system has detected, and in many cases what it has done to protect the spa. A few of these messages mean you should stay out of the water until things cool down. Others point to a simple fix like a dirty filter or a low water level. Only a few require a service c … read more
Draining and Winterizing Your AquaTerra Spa: Water Changes, Cold-Weather Storage, and Spring Start-Up

Draining and Winterizing Your AquaTerra Spa: Water Changes, Cold-Weather Storage, and Spring Start-Up

Posted by HTSS Team on Sep 21st 2026

Draining and Winterizing Your AquaTerra Spa: Water Changes, Cold-Weather Storage, and Spring Start-Up Draining your AquaTerra spa is something you will do several times a year to keep the water fresh. Winterizing is something you may only do once a year, or never, depending on your climate and how you use the spa. Both jobs start the same way, but winterizing goes much further, because any water left in the pumps, heater, and plumbing can freeze, expand, and crack components. That kind of damage … read more
AquaTerra Spa Filter Care: How to Remove, Clean, and Replace a Screw-In Filter Cartridge

AquaTerra Spa Filter Care: How to Remove, Clean, and Replace a Screw-In Filter Cartridge

Posted by HTSS Team on Sep 14th 2026

AquaTerra Spa Filter Care: How to Remove, Clean, and Replace a Screw-In Filter Cartridge If there is one maintenance task that makes the biggest difference in how your AquaTerra spa looks, feels, and runs, it is filter care. The filter catches the hair, skin cells, lotion, and debris that would otherwise cloud the water, and it protects the pump by keeping that debris out of the plumbing. AquaTerra spas use a screw-in filter cartridge that is easy to remove once you know how, and a simple monthl … read more
AquaTerra Spa Startup Guide: Filling and Balancing Water for the First Time

AquaTerra Spa Startup Guide: Filling and Balancing Water for the First Time

Posted by HTSS Team on Sep 7th 2026

AquaTerra Spa Startup Guide: Filling and Balancing Water for the First Time Whether you just bought a new AquaTerra spa or you are refilling after a full drain, getting the startup water chemistry right the first time saves you from days of chasing an imbalance that never quite settles. AquaTerra's own guidance is specific about the order chemicals go in and how patient you need to be between steps, and skipping ahead is the most common way owners end up with cloudy or unbalanced water right out … read more
AquaTerra Spa Control Panel Modes Explained: Standard, Sleep, and Smart Winter

AquaTerra Spa Control Panel Modes Explained: Standard, Sleep, and Smart Winter

Posted by HTSS Team on Aug 31st 2026

AquaTerra Spa Control Panel Modes Explained: Standard, Sleep, and Smart Winter Every AquaTerra spa's control panel offers a handful of operating modes that quietly do a lot of work behind the scenes, and understanding what each one actually does helps you get the most out of your spa without overthinking daily settings. Standard Mode, Sleep Mode, and Smart Winter Mode each serve a different purpose, and picking the right one for your household's actual usage pattern can meaningfully affect both … read more