Zoeller Basement Sentry STBB200 User Manual (English)

Questions and Answers:

D
Dawn GuerraAug 4, 2025
What to do if Zoeller Water Pump runs but no water is delivered?
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  James McbrideAug 4, 2025
  If your Zoeller Water Pump runs but delivers little or no water, it could be due to several reasons. First, verify that all connections are correctly installed, as incorrect or loose connections can cause this issue. Additionally, a plugged weep hole can lead to the unit becoming air-locked; clean the weep hole to resolve this. A blocked discharge pipe can also restrict water flow, so clear the discharge pipe. Finally, a malfunctioning check valve might be the culprit; replace the check valve if necessary.
M
Mark ValenciaAug 9, 2025
Why does the Zoeller Water Pump alarm sound during battery recharge?
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  James ParkerAug 9, 2025
  If the alarm sounds during the battery recharge cycle for your Zoeller Water Pump, it might be because the alarm needs to be reset. Press the ‘Silence’ button for 3 seconds. Alternatively, the battery could be defective, so check the battery and replace it if necessary.
P
Paul WalkerAug 14, 2025
How to troubleshoot a Zoeller Basement Sentry STBB200 backup that won’t run?
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  greentyroneAug 14, 2025
  If your Zoeller Water Pump backup pump won’t run, start by verifying that all connections are correctly installed, as incorrect or loose connections can prevent it from operating. Next, check all wire terminals and clean them if required, as dirty terminal points can disrupt the electrical flow. Also, a low battery can be the cause, so service or replace the battery. Lastly, check the 30 Amp controller fuse and replace it with a 30 amp automotive blade fuse if it's blown.
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george84Aug 20, 2025
What to do if Zoeller Basement Sentry STBB200 Water Pump runs continuously but water level stays high?
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  Timothy CunninghamAug 20, 2025
  If the water level stays high and the Zoeller Water Pump continues to run, it could be due to a low battery. In this case, service or replace the battery. If power has been restored, check the primary pump and service or replace it if required.
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Michelle MunozAug 25, 2025
What to do if Zoeller Basement Sentry STBB200 Water Pump float switch is on but pump won't run?
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  mhendersonAug 25, 2025
  If the float switch is in the ‘on’ position for 3 seconds or more but the Zoeller Water Pump won’t run, the pump might be obstructed. Remove the pump and clear any debris from the impeller or pump cavity.
S
Stephanie TranAug 29, 2025
Why does Zoeller Basement Sentry STBB200 pump water intermittently?
- J
  Jamie PollardAug 29, 2025
  If your Zoeller Water Pump runs but pumps water intermittently, it may be due to incoming water causing the pump to air lock. Divert the incoming water to reduce turbulence.

Zoeller Basement Sentry STBB200 Specifications

General

Model	STBB200
Category	Water Pump
Discharge Size	1-1/2 inches
Material	Thermoplastic
Pump Housing Material	Thermoplastic
Switch Type	Vertical Float Switch
Outlet Size	1-1/2 inches
Voltage	12V
Alarm	Yes
Power Cord Length	10 feet