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Question DetailsAsked on 9/6/2017

The septic tank alert green light is NOT illuminated. I pressed the button to test and the buzzer DOES go off.

The breaker is NOT tripped. Could the bulb need to be replaced or do I need to have a new tank alert installed?

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2 Answers


Hello Dzwiff,

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Iann M

Answered 3 years ago by Member Services


Some tank alarm systems have a green "OK" light that goes off when the system fails or it loses power - others have green and red lights - green goes off and r4ed comes on during a problem.

Certainly this needs to be checked out ASAP, because using water or flushing will rapidly overfill the septic tank - this assuming the alarm system is on a septic lift pump system.

You could certainly try changing the bulb - or if an electrical DIY'er check for power at the unit to the pump and lights with a VOM. OBviopusly you have power there if the buzzer sounds - and assuming this buzzer is an audible alarm, if that (and red light if you have one) has not gone off then sounds like a burnt out bulb to me.

Even if that were not the problem, would not necessarily need a new alarm - if you cannot diagnose/solve the problem then find a septic tank contractor who repairs septic systems (some in the Septic Tank category only pump tanks, some only repair, some do both).

Answered 3 years ago by LCD

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