Strange noises from the pump? Filter pressure through the roof? Heater won\u2019t 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\u2019s 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\u2019t Start

Check first: Is the breaker tripped? A GFCI breaker that keeps tripping usually means a ground fault \u2014 moisture in the motor, damaged wiring, or a failing capacitor. Reset once. If it trips again, do not keep resetting \u2014 call an electrician or pool professional.

Humming but not spinning: Usually a bad start capacitor ($15-$30 part, easy replacement) or seized motor bearings. Try spinning the impeller manually with a screwdriver through the back port \u2014 if it\u2019s stuck, the motor may need replacement.

Nothing at all: Check the timer/automation system. Many DFW pool systems use Pentair or Hayward automation that can be set incorrectly after a power outage.

Pump Is Making Loud Noise

Screaming/screeching: Bad motor bearings. The motor needs replacement \u2014 bearings aren\u2019t cost-effective to replace on pool motors. Expected cost: $300-$600 for motor, or $800-$1,500 for a full pump upgrade.

Grinding/rattling: Something in the impeller \u2014 rock, twig, or debris. Turn off the pump, remove the pump basket, and check the impeller. This is a common DFW issue after storms blow debris into skimmers.

Cavitation (gurgling/sucking air): The pump is starving for water. Check: basket full of debris? Low water level? Air leak in the suction line? Clogged skimmer?

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 \u2014 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 \u2014 replace sand every 5-7 years
Cartridge filter: Remove and hose down cartridges. Soak overnight in filter cleaner if they\u2019re 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\u2019t 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) \u2014 not that the filter is magically clean.

Pool Heater Problems

Heater Won\u2019t Ignite

Gas pool heaters are the most common type in DFW. If yours won\u2019t 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 \u2014 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

Safety Warning: If you smell gas near your heater, turn off the gas supply immediately and call a professional. Do not attempt to diagnose gas heater problems beyond basic checks. Gas leaks and improper combustion are serious safety hazards.

Salt Cell Problems

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

\u201cCheck Salt\u201d or \u201cLow Salt\u201d Warning

Test actual salt level with a digital meter (don\u2019t rely solely on the unit\u2019s 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 \u2014 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\u2019t. 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\u2019t responding \u2014 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

Safe to DIY

\u2022 Cleaning pump basket and skimmer
\u2022 Hosing off filter cartridges
\u2022 Backwashing sand/DE filter
\u2022 Replacing pump lid O-ring
\u2022 Checking/resetting breakers (once)
\u2022 Cleaning salt cell with acid wash
\u2022 Replacing pressure gauge
\u2022 Checking automation schedules

Call a Professional

\u2022 Breaker keeps tripping
\u2022 Gas heater issues (beyond basic checks)
\u2022 Motor replacement
\u2022 Underground plumbing leaks
\u2022 Electrical bonding/grounding
\u2022 Persistent air leaks you can\u2019t locate
\u2022 Automation wiring or programming
\u2022 Any repair requiring pool draining

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.

Need Equipment Help?

Whether it\u2019s a diagnosis, repair, or full replacement, we handle all pool equipment services across DFW. CPO-certified, honest assessment, and we\u2019ll always tell you if a repair is more cost-effective than replacement.