Zoeller Basement Sentry STBC201 User Manual (English)

Questions and Answers:

N
Nathan FerrellAug 4, 2025
Why won't my Zoeller Basement Sentry STBC201 backup pump run?
- B
  beckerjenniferAug 4, 2025
  If your Zoeller Water Pump backup pump isn't running, several factors could be the cause. First, verify that all connections are correctly installed and not loose. Next, check all wire terminals and clean them if they're dirty. Also, the battery may be low, so service or replace it. Finally, inspect the 30 Amp controller fuse and replace it with a 30 amp automotive blade fuse if it's blown.
P
Philip JohnsonAug 9, 2025
What to do if Zoeller Basement Sentry STBC201 Water Pump runs but delivers little or no water?
- C
  Charles ThompsonAug 9, 2025
  If your Zoeller Water Pump runs but isn't delivering enough water, start by verifying that all connections are correctly installed and not loose. Then, check the weep hole and clean it if it's plugged, as this can cause the unit to air-lock. Additionally, inspect the discharge pipe for any blockages and clear them. Finally, the check valve might not be working correctly; if it allows water to flow back into the sump basin after the pump shuts off, replace it.
D
Dalton MayAug 14, 2025
Why does the alarm sound during battery recharge cycle on my Zoeller Water Pump?
- J
  Jason NicholsAug 14, 2025
  If the alarm sounds during the battery recharge cycle of your Zoeller Water Pump, it could be due to a couple of reasons. First, try resetting the alarm by pressing the ‘Silence’ button for 3 seconds. If that doesn’t work, the battery may be defective. Check the voltage with a multimeter; disconnect the controller from the battery and re-check the voltage. If the voltage is below 12V after disconnecting, the battery must be replaced.
S
Shane ArellanoAug 19, 2025
What to do if water level stays high but Zoeller Water Pump continues to run?
- L
  lewisfranciscoAug 19, 2025
  If the water level remains high while your Zoeller Water Pump continues to run, it may be due to a low battery. In this case, service or replace the battery. If that doesn't solve the problem, the pump may require service or replacement.
K
Kimberly AguirreAug 25, 2025
Why does my Zoeller Basement Sentry STBC201 Water Pump run but pump water intermittently?
- S
  Sean FieldsAug 25, 2025
  If your Zoeller Water Pump runs but pumps water intermittently, the incoming water may be causing the pump to air lock. Divert the incoming water to reduce turbulence.
R
Robert CastanedaAug 29, 2025
What to do if Zoeller Basement Sentry STBC201 float switch is in ‘on’ position but pump won’t run?
- O
  oaustinAug 29, 2025
  If the float switch of your Zoeller Water Pump is in the 'on' position for 3 seconds or more, but the pump won’t run, the pump might be obstructed. Remove the pump and clear any debris from the impeller or pump cavity.

Zoeller Basement Sentry STBC201 Specifications

General

Brand	Zoeller
Model	Basement Sentry STBC201
Category	Water Pump
Language	English

Summary

Attach Receipt

Package Contents

Safety Information (Page 2)

Chemical, Fire, and Electric Hazards

Covers risks of chemical burns, fire/explosion, and electric shock.

Personal Injury and Product Damage Warnings

Highlights risks of personal injury and product damage from improper use.

Safety Information (Page 3)

Electrical Shock and Personal Injury Alerts

Detailed warnings about electrical shock and personal injury risks.

California Proposition 65 Warning

Specific warning for California residents regarding cancer and reproductive harm.

Preparation

Estimated Installation Time

Provides an estimate for the time needed for installation.

Required Materials

Lists materials needed for the assembly and installation.

Pump Specifications

Performance Data

Table showing pump performance in gallons per minute at different head heights.

General Pump Information

System Features and Basin Requirements

Details about WiFi, monitoring, and recommended basin dimensions.

Carbon Monoxide Detector Guidance

Preventing False CO Alarms

Recommendations for positioning batteries to avoid triggering CO detectors.

Installation Instructions (Part 1)

Disconnect Primary Pump

First step in installation: disconnect power and remove the existing pump.

Prepare Piping Connections

Dry fitting connections and cutting PVC pipe for proper fit.

Controller Mounting

Instructions for installing the controller at least 3 ft. above the sump pit.

Installation Instructions (Part 2)

Battery and Pump Connections

Connecting battery leads to the controller and backup pump to the controller.

Connect Controller to Power

Plugging the controller into a GFCI-protected 115V outlet.

Controller Functions and Operations

Silence/Reset Button

Silences alarms for 24 hours or resets alarms/LEDs.

Test Button

Runs the pump to check amp draw and initiates self-testing.

LED Light Functionality Guide

AC Power LED Indicators

Explains AC power status based on LED flash patterns.

Battery Status LEDs

Interprets LED lights for battery charge and connection status.

Float Status LEDs

Indicates water level and float switch status via LEDs.

DC Pump Status LEDs

Shows pump operation status through LED indicators.

Z Control LED Indicators

Explains LEDs related to network and cloud connectivity.

Connecting to Z Control Cloud (Part 1)

Mobile App Setup (iOS/Android)

Guide for connecting the controller using the mobile app.

Connecting to Z Control Cloud (Part 2)

Account and Location Setup

Steps for creating an account and adding a new device location.

Notification Settings

Setting up phone numbers and email addresses for notifications.

Connecting to Z Control Cloud (Part 3)

Add Device via QR Code or Manual Input

Scanning QR code or manually inputting SSID to add the device.

Connect to WiFi Network

Selecting WiFi network and entering password for controller connection.

Connecting to Z Control Cloud (Part 4)

Verify Device Setup in App

Confirming the new device is set up in the Z Control app.

Perform System Tests

Testing pump, buzzer, and silence functions to ensure proper operation.

Connecting to Z Control Cloud (Part 5)

Direct Connection Setup (No App)

Connecting directly to the controller via mobile device or computer.

Connecting to Z Control Cloud (Part 6)

Select Controller SSID

Finding the controller's SSID in WiFi settings and accessing the setup screen.

Configure WiFi Connection

Scanning for WiFi, entering credentials, and connecting to the network.

Connecting to Z Control Cloud (Part 7)

Log in to Z Control Cloud

Accessing the Z Control cloud account after connection.

Add Product Tile to Account

Adding the controller to the account via auto-detect or Device ID.

Firmware Updates

OTA Update Process

Explanation of how the controller receives over-the-air firmware updates.

Controller Setup

Accessing Notification and Device Settings

Accessing settings via the Z Control Cloud for notifications and devices.

Start-Up and Operation (Part 1)

Automatic Pump Air Lock Remediation

How the controller handles air lock situations and stuck floats.

DC Pump LED Indicator

Understanding the DC pump LED for operational status.

Primary Pump Disconnection and Leak Test

Disconnecting primary pump and testing installation for leaks.

Start-Up and Operation (Part 2)

Controller System Status Check

Verifying the controller's system light is green upon plugging in.

Initial Power-Up and Battery Charging LEDs

Understanding LED behavior during initial power-up and battery charging.

DC Pump LED Indicator (Continued)

Further explanation of the DC pump LED for operational status.

Start-Up and Operation (Part 3)

Backup Pump Float Switch Tests

Testing the lower and upper float switches for proper backup pump operation.

Final Installation Test

Testing the system for leaks after installation and with primary pump disconnected.

Start-Up and Operation (Part 4)

Alarm Silence and System Reset

Silencing pump alarms and resetting the system.

Battery Charging and Full Charge LEDs

Understanding LED indicators for battery charging status.

Care and Maintenance

Periodic Inspection and Test Procedure

Procedure for monthly inspection and testing of the pump system.

Battery Information and Troubleshooting

Recommended Battery Type and Size

Specifications for the required 12V deep-cycle battery.

Battery Troubleshooting

Diagnosing and resolving common battery-related issues.

Troubleshooting Common Issues

Backup Pump Not Running

Causes and solutions for when the backup pump fails to operate.

Pump Delivers Little or No Water

Troubleshooting low water delivery despite the pump running.

Float Switch Issues

Resolving problems with the float switch not activating the pump.

Intermittent Pumping and High Water Level

Addressing intermittent pump operation and persistent high water levels.

Alarm Sounds During Recharge Cycle

Troubleshooting alarms that occur during the battery recharge process.

Product Warranty Information

Warranty Coverage and Exclusions

Details on what the three-year warranty covers and does not cover.

Warranty Claims and Liability Limitations

Procedures for warranty service and limitations on damages.

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Zoeller Basement Sentry STBC201 User Manual

Table of Contents

Questions and Answers:

Zoeller Basement Sentry STBC201 Specifications

Summary

Attach Receipt

Package Contents

Safety Information (Page 2)

Chemical, Fire, and Electric Hazards

Personal Injury and Product Damage Warnings

Safety Information (Page 3)

Electrical Shock and Personal Injury Alerts

California Proposition 65 Warning

Preparation

Estimated Installation Time

Required Materials

Pump Specifications

Performance Data

General Pump Information

System Features and Basin Requirements

Carbon Monoxide Detector Guidance

Preventing False CO Alarms

Installation Instructions (Part 1)

Disconnect Primary Pump

Prepare Piping Connections

Controller Mounting

Installation Instructions (Part 2)

Battery and Pump Connections

Connect Controller to Power

Controller Functions and Operations

Silence/Reset Button

Test Button

LED Light Functionality Guide

AC Power LED Indicators

Battery Status LEDs

Float Status LEDs

DC Pump Status LEDs

Z Control LED Indicators

Connecting to Z Control Cloud (Part 1)

Mobile App Setup (iOS/Android)

Connecting to Z Control Cloud (Part 2)

Account and Location Setup

Notification Settings

Connecting to Z Control Cloud (Part 3)

Add Device via QR Code or Manual Input

Connect to WiFi Network

Connecting to Z Control Cloud (Part 4)

Verify Device Setup in App

Perform System Tests

Connecting to Z Control Cloud (Part 5)

Direct Connection Setup (No App)

Connecting to Z Control Cloud (Part 6)

Select Controller SSID

Configure WiFi Connection

Connecting to Z Control Cloud (Part 7)

Log in to Z Control Cloud

Add Product Tile to Account

Firmware Updates

OTA Update Process

Controller Setup

Accessing Notification and Device Settings

Start-Up and Operation (Part 1)

Automatic Pump Air Lock Remediation

DC Pump LED Indicator

Primary Pump Disconnection and Leak Test

Start-Up and Operation (Part 2)

Controller System Status Check

Initial Power-Up and Battery Charging LEDs

DC Pump LED Indicator (Continued)

Start-Up and Operation (Part 3)

Backup Pump Float Switch Tests

Final Installation Test

Start-Up and Operation (Part 4)

Alarm Silence and System Reset

Battery Charging and Full Charge LEDs

Care and Maintenance

Periodic Inspection and Test Procedure

Battery Information and Troubleshooting

Recommended Battery Type and Size

Battery Troubleshooting