Guide
Aerobic septic alarm going off? What to check
Aerobic systems have an audible and visual alarm on the control panel. It usually means one of two things: the air pump has stopped, or the water level in the pump tank is high.
Safe first steps
- Press the silence button. Many panels re-arm the alarm after a few hours if the fault is still there.
- Check the breaker for the septic system and any GFCI outlet the aerator plugs into.
- Listen at the aerator. No hum, or a hot and silent unit, usually means a failed pump or diaphragm.
- Cut water use (laundry, dishwasher, long showers) until the cause is fixed.
- After heavy rain, a high-water alarm can clear once the spray cycle runs.
Call a provider if
- The alarm comes back after resetting the breaker
- The aerator is silent or smells burnt
- Sewage is backing up or surfacing
Under contract, complaint visits count as service calls, and the provider must record them (TCEQ). Find a provider.
Never open tank lids or enter a tank. The gases can be deadly.
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FAQ
Why is my aerobic septic alarm going off?
Usually a failed or unplugged air pump, a tripped breaker, or high water in the pump tank.
Can I just turn the alarm off?
You can silence it, but the alarm is required equipment and must stay working. Fix the cause.