Common Pool Equipment Problems and How to Fix Them

TLDR

Common pool equipment problems include pump not priming (check water level, baskets, and air leaks), filter pressure issues (backwash or clean cartridges), and heater failures (verify gas supply, pilot light, and flow). Many issues resolve with simple troubleshooting, but electrical problems and gas leaks require professional repair.

Pump Problems and Solutions

A pump that won't start typically indicates electrical issues or a tripped breaker. Before calling for repair, check your circuit breaker and reset if necessary. Verify the timer is set correctly and the switch is in the "on" position. If the motor hums but doesn't turn, the capacitor may have failed—a common issue in older pumps that requires replacement. Never attempt electrical repairs yourself unless you're qualified.

Pump not priming means it's not pulling water and will eventually overheat. First, check the pool water level—if it drops below the skimmer opening, the pump can't pull water. Inspect and clean the pump basket and skimmer baskets; clogged baskets prevent proper flow. Look for air leaks in the plumbing between the pool and pump—loose fittings, cracked lids, or damaged o-rings let air enter the system. Tighten connections, replace worn o-rings, and ensure the pump lid seal is clean and properly seated.

Unusual noises signal specific problems. Grinding or screeching suggests failing bearings—these don't improve and require pump motor replacement. Loud vibration indicates an unbalanced impeller, often from debris caught inside. Cavitation (a rumbling or rocks-tumbling sound) means the pump isn't getting enough water, pointing back to priming issues or a clogged impeller.

Filter and Heater Issues

High filter pressure (8-10 PSI above clean reading) means it's time to backwash sand or DE filters or clean cartridge filters. Low pressure suggests a problem before the filter—clogged pump basket, closed valves, or clogged impeller. No pressure indicates the pump isn't running or severe blockage. Always check pressure regularly; it's your best diagnostic tool for filtration problems.

Heater won't ignite? For gas heaters, verify the gas supply is on and pilot light is lit. Check for error codes on digital displays—these pinpoint specific issues. Ensure the filter pump is running; most heaters won't operate without adequate water flow for safety. Dirty filters reduce flow enough to prevent heater operation. For heat pumps, check the outdoor temperature—most won't operate below 45-50°F. Never attempt gas heater repairs yourself; these require licensed professionals.