Knowledge Base
Knowledge Base
Technical guides written for spa owners and technicians — find the answer to your spa problem.
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Recently published
- Troubleshooting
Jacuzzi Heater Element: Test, Diagnose, and Replace
A step-by-step guide to confirming whether your Jacuzzi heater element has failed, including multimeter testing, common failure causes, and how to match a replacement to your spa's model and control system.
October 2, 2026
- Troubleshooting
Hot Tub Gasket Replacement Guide: Sizing & Install
A leaking union or filter lid is almost always a worn gasket, not a cracked shell. This guide shows how to identify which gasket has failed, measure it correctly, and swap it in under an hour with basic tools.
October 2, 2026
- Troubleshooting
Spa Control Panel Not Responding: Full Diagnostic Guide
A dead or partially working spa control panel usually traces back to power, a bad connection, or a worn keypad — not always a full control pack failure. This guide walks through the same diagnostic order a spa technician would use, flags the one symptom that means stop and call a professional, and points you to the right replacement part if the fix is on your end.
October 2, 2026
- Troubleshooting
Hot Tub Circuit Board: Diagnose, Identify & Replace
A diagnostic-first guide to hot tub circuit boards: what the part does, the symptoms that point to board failure, how to read your model number, and a step-by-step replacement walkthrough. Written to get you to the correct board on the first order instead of guessing.
October 2, 2026
- Troubleshooting
Sta-Rite Pump Parts Guide: Find the Right Fit
A practical guide to identifying and buying Sta-Rite pump parts, from reading the model tag to matching impellers and seal plates by horsepower. Includes a parts-diagram walkthrough, HP cross-reference table, and links straight into in-stock replacement categories.
October 2, 2026
- Troubleshooting
Waterway Pump Guide: ID, Specs & Replacement
A complete buyer-and-installer guide to Waterway pumps covering model identification, horsepower and frame sizing, wet-end vs. full-pump replacement, and a safe step-by-step swap procedure. Includes comparison tables and links to in-stock pump, wet end, and seal parts.
October 2, 2026
- Troubleshooting
Hot Tub Heater Guide: Types, Diagnosis & Replacement
A complete buyer's and installer's guide to hot tub heaters covering electric, propane, natural gas, and portable options. Learn how to diagnose a failing heater, choose the right replacement by brand and kW rating, and install it safely.
October 2, 2026
- Troubleshooting
Cost to Replace a Hot Tub Heater (2024 Price Guide)
A granular cost breakdown for replacing a hot tub heater, segmented by heater type (element-only, complete assembly, gas heater) and by brand, with a comparison of DIY parts cost versus professional installation labor.
October 2, 2026
- Troubleshooting
Jacuzzi Leaking? How to Find and Fix the Source
A step-by-step diagnostic guide for a leaking jacuzzi or hot tub, covering visual inspection, dye testing, and the static water level test. Includes a decision-tree breakdown of pump, heater, jet, and shell leaks with realistic repair costs and part links.
September 24, 2026
- Troubleshooting
Hot Tub Leaking? Find the Source Fast
A hot tub leaking water usually traces back to one of five spots: unions, valves, filter housing, plumbing, or the shell itself. This guide walks through a mechanic-style checklist to pinpoint the source in under 10 minutes, explains common causes, and links to the parts needed for a permanent fix.
September 22, 2026
- Troubleshooting
Jacuzzi Cloudy Water: Causes and Fixes
Cloudy jacuzzi water almost always traces back to chemistry, filtration, or circulation. This guide walks you through a quick self-diagnostic for each cause and pairs it with the specific fix or part needed to clear the water and keep it clear.
September 21, 2026
- Troubleshooting
Hot Tub Cloudy Water: Causes and Fixes That Work
Cloudy hot tub water almost always traces back to chemistry, filtration, or circulation — and the fix order matters. This guide walks through diagnosing your exact symptom (cloudy despite balanced chemicals, cloudy after shock, cloudy and foamy) and the correct sequence of fixes before you spend money on parts or chemicals you don't need.
September 20, 2026
- Troubleshooting
Spa Cloudy Water: Causes & How to Fix It
Cloudy spa water usually points to chemistry, but not always. This guide walks through the six most common causes, a step-by-step fix, and the mechanical problems—like a tired circulation pump or clogged filter—that keep water hazy even when test strips look fine.
September 19, 2026
- Troubleshooting
Hot Tub Ice Mode: What It Means and How to Fix It
Seeing "ICE" on your spa display doesn't mean something is broken — it means your control pack is protecting the plumbing from a freeze. This guide breaks down why ice mode triggers, how Balboa and Sundance systems handle it differently, and the exact steps to clear it and keep it from coming back.
September 19, 2026
- Troubleshooting
Balboa DR Code: What It Means and How to Fix It
The Balboa DR code signals the control system thinks the heater is dry after failing to confirm flow through three heating attempts. This guide walks through every likely cause—from low water and air lock to a failing pump, pressure switch, or thermistor—and gives a clear diagnostic path from simple checks to part replacement.
September 18, 2026
- Troubleshooting
HH Error Code Spa: What It Means and How to Fix It
The HH error code means your spa's control system has detected a high-limit or high-heat trip, usually from restricted water flow but sometimes from a failed sensor or stuck relay. This guide walks through the exact causes, a step-by-step diagnostic sequence, and how to decide whether a sensor swap fixes it or you need a control board.
September 18, 2026
- Troubleshooting
OH Error Code Hot Tub: What It Means & How to Fix
An OH, OHH, or OHS code on a hot tub control panel means the overheat protection has tripped, shutting off the heater to protect the equipment. This guide walks through the real causes — from clogged filters to failed sensors — and gives a step-by-step path to clearing the code and getting back in the water safely.
September 16, 2026
- Troubleshooting
Balboa FLO Error: Full Diagnostic Guide
A Balboa FLO error means the control system isn't seeing confirmed water flow, and the fix depends on whether the code is solid or flashing. This guide walks through the full diagnostic sequence — from filter and water level checks to a hands-on pressure switch continuity test — so you know exactly what's wrong before you buy a part or call a technician.
September 16, 2026
- Troubleshooting
Hot Tub Pump Humming: Causes & How to Fix It
A humming hot tub pump means the motor is getting power but something is stopping it from spinning — or it's spinning but making noise for another reason. This diagnostic guide separates the two scenarios and walks through air locks, capacitors, bearings, and impeller jams so you can pinpoint the fix before buying parts.
September 16, 2026
- Troubleshooting
Spa Circulation Pump: Diagnose, Compare, Replace
A hot tub that won't heat or filter properly often points to the circulation pump, not the main jet pump. This guide walks through what the part does, how to tell it's failing, how it compares to your main pump, and how to replace it with the correct brand and spec match.
September 13, 2026
- Troubleshooting
Grundfos Circ Pump Guide: Models, Sizing, Replacement
A practical guide to Grundfos circulator pumps for hydronic heating and hot water recirculation systems. Covers how the UP, UPS, and ALPHA series differ, how to spot a failing circulator, and how to size and swap a replacement without guesswork.
September 13, 2026
- Troubleshooting
Spa Light Replacement Guide: Types, Fixes, Buying
A practical guide to hot tub and spa lights — what they are, the common failure points, and how to safely diagnose and replace one. Covers LED, incandescent, and fiber optic systems along with wiring, gaskets, and buying the correct replacement part.
September 11, 2026
- Troubleshooting
Jacuzzi Heater Not Working: Full Diagnostic Guide
A spa technician's diagnostic flowchart for a Jacuzzi or hot tub heater that won't heat, covering power, water flow, control panel codes, and failed components. Includes brand-specific reset button locations and a clear guide to which parts you can safely swap yourself versus when to call a pro.
September 10, 2026
- Troubleshooting
Hot Tub Jet Not Working? Full Diagnostic Guide
A hot tub jet that won't fire can mean anything from a closed valve to a failed pump. This guide walks you through a fast diagnostic checklist—one jet vs. all jets, one side vs. both—and points you to the specific part that fixes each cause.
September 10, 2026
- Troubleshooting
Hot Tub Heater Not Working? Causes, Fixes, Parts
A hot tub that won't heat is almost always one of seven common failures, from a tripped GFCI to a corroded element. This guide walks through self-diagnosis, a step-by-step troubleshooting sequence, error code meanings, and the replacement parts that fix each cause.
September 7, 2026
- Troubleshooting
Hot Tub Won't Turn On? Step-by-Step Fix Guide
A hot tub that won't turn on has one of a handful of causes, and the fix depends on whether you have no power at all or power with no response. This guide walks through each check in order, from the home breaker panel to the control board, so you can isolate the failure point before buying parts or calling a technician.
September 5, 2026
- Troubleshooting
Hot Tub Foamy Water: Causes and How to Fix It
Foamy hot tub water almost always traces back to one of a handful of causes, and each one leaves a different signature on a test strip. This guide pairs each cause with the reading that confirms it and the specific fix that clears it, so you can act instead of guessing.
September 5, 2026
- Troubleshooting
Hot Tub Jets Not Working: Step-by-Step Fix Guide
Weak, pulsing, or dead hot tub jets almost always trace back to one of six causes: low water, a dirty filter, closed valves, air lock, a failing pump, or a plumbing blockage. This guide walks through each check in order so you can pinpoint the failure point yourself and know exactly which part to replace.
September 2, 2026
- Troubleshooting
Hot Tub Keeps Tripping Breaker: Causes & Fixes
A hot tub that keeps tripping the breaker is telling you there's a ground fault somewhere in the circuit. This guide organizes the troubleshooting by when the trip happens — immediately, after a few minutes, or when jets kick on — so you can narrow down the cause before calling an electrician or replacing a part.
September 1, 2026
- Troubleshooting
How to Clean a Hot Tub Filter (Step-by-Step Guide)
A step-by-step guide to cleaning a hot tub filter cartridge, covering rinse technique, chemical soak options like vinegar and dishwasher detergent, and how to tell when it's time to replace the filter instead of clean it.
September 1, 2026
- Replacement Guides
Finding replacement parts for older Jacuzzi spas
June 8, 2026
- Replacement Guides
What replaces the Gecko SSA control pack
June 8, 2026
- Replacement Guides
What replaces the Hot Spring IQ2020 control board
June 8, 2026
- Replacement Guides
Replacement options for older Sundance topside controls
June 8, 2026
- Replacement Guides
Replacing older Balboa spa heaters
June 8, 2026
- Replacement Guides
Discontinued Waterway pump replacement guide
June 8, 2026
- Replacement Guides
What replaces the Balboa RS101 control pack
June 8, 2026
- Replacement Guides
Waterway Executive 56 replacement options
June 8, 2026
- Replacement Guides
What replaces the Laing E14 circulation pump
June 8, 2026
- Replacement Guides
What replaces the Laing E5 circulation pump
June 8, 2026
- Troubleshooting
Hot tub freeze protection not working
June 8, 2026
- Troubleshooting
Spa pump seal leak - signs and replacement
June 8, 2026
- Troubleshooting
Why your hot tub is heating slowly
June 8, 2026
- Troubleshooting
Signs your spa circuit board has failed
June 8, 2026
- Troubleshooting
Why your hot tub fuse keeps blowing
June 8, 2026
- Troubleshooting
Spa light not working - diagnosis guide
June 8, 2026
- Troubleshooting
Hot tub topside control panel not working
June 8, 2026
- Troubleshooting
Troubleshooting your spa ozonator
June 8, 2026
- Troubleshooting
Hot tub blower not working - causes and fixes
June 8, 2026
- Troubleshooting
How to know when to replace your spa temperature sensor
June 8, 2026