Pool Equipment Troubleshooting Guide for DFW Homeowners

Strange noises from the pump? Filter pressure through the roof? Heater won’t fire? Pool equipment problems are stressful, but many have simple explanations. This guide covers the most common issues I see across DFW pools, what you can safely check yourself, and when it’s time to call a professional.

Pool Pump Problems

The pump is the heart of your pool system. When it fails, everything else stops working. Here are the most common pump issues:

Pump Won’t Start

Pump Is Making Loud Noise

Pump Losing Prime

If you see air bubbles in the pump basket or the pump loses prime (fills with air), you have a suction-side air leak. Common culprits: cracked pump lid, bad lid O-ring ($5-$15 fix), loose fitting on the suction plumbing, or a crack in the pipe underground. Start with the cheapest fix — replace the lid O-ring and lubricate it with silicone-based lube (never petroleum-based).

Filter Problems

High Filter Pressure

Normal operating pressure varies by system (usually 8-15 PSI). When pressure rises 8-10 PSI above your clean baseline, the filter needs cleaning:

• Sand filter: Backwash for 2-3 minutes. If pressure stays high after backwash, the sand may be channeled or saturated — replace sand every 5-7 years
• Cartridge filter: Remove and hose down cartridges. Soak overnight in filter cleaner if they’re oily or have calcium buildup. Replace cartridges every 1-2 years
• DE filter: Backwash and add fresh DE powder. If pressure stays high, full teardown and grid cleaning is needed. Torn grids need replacement

Low Filter Pressure

Unusually low pressure means the pump isn’t pushing enough water. Check: blocked skimmer basket, full pump basket, clogged impeller, or the pump is losing prime. A pressure reading of 0 PSI usually means a bad pressure gauge ($10-$20 replacement) — not that the filter is magically clean.

Pool Heater Problems

Heater Won’t Ignite

Gas pool heaters are the most common type in DFW. If yours won’t fire:

• Check gas supply: Is the gas valve open? Is there propane in the tank? (Sounds obvious, but this is the #1 call we get)
• Check water flow: Heaters have a pressure switch that prevents firing without adequate water flow. A dirty filter or clogged basket can trigger this
• Error codes: Modern heaters display error codes. Common ones include ignition failure (dirty igniter or gas valve issue), high limit (overheating protection — usually a flow problem), and sensor failures
• Spider webs: In DFW, spiders love nesting in heater burner tubes during off-season. This blocks gas flow and prevents ignition. A professional can clean the burner tray

Salt Cell Problems

Saltwater pool systems are increasingly popular in DFW, but the salt cell requires specific attention:

“Check Salt” or “Low Salt” Warning

Test actual salt level with a digital meter (don’t rely solely on the unit’s reading). Most systems need 2,800-3,400 ppm. If salt is correct but the error persists, the salt sensor may need cleaning or the flow switch may be faulty.

Cell Not Producing Chlorine

Inspect the cell for calcium scale buildup — white, chalky deposits on the plates. This is extremely common in DFW due to our hard water. Clean with a 4:1 water-to-muriatic acid solution. If the cell is clean but still not producing, it may have reached end of life (typically 3-5 years in DFW). Most systems show cell life as a percentage.

Pool Automation Issues

Pool automation systems (Pentair IntelliCenter, Hayward OmniLogic, etc.) are fantastic when they work but frustrating when they don’t. Common issues:

• After power outage: Schedules and settings may reset. Check all programmed schedules are correct
• App not connecting: Usually a WiFi issue at the equipment pad. Many DFW pools have equipment too far from the router. A WiFi extender ($30-$50) often solves this
• Relay clicking but equipment not running: The automation relay is trying but the equipment isn’t responding — check breakers and equipment power independently
• Freeze protection not activating: Verify the temperature sensor is working and freeze protect is enabled. This is critical for DFW winters

When to DIY vs Call a Professional

Preventive Maintenance Saves Money

Most of the equipment failures I see are preventable with regular maintenance. Running a pump with a full basket strains the motor. Ignoring high filter pressure damages internals. Letting a salt cell scale over shortens its life by years. A weekly professional service catches these issues before they become expensive replacements.