What Does “Water Sensor Error” Mean on Your Gardena System? How to Troubleshoot

Watering your garden with precision is essential for plant health. Gardena systems provide a convenient solution, but encountering a “Water Sensor Error” can be perplexing. In this guide, we’ll delve into the meaning of these errors and provide practical steps for troubleshooting.

GARDENA Soil Moisture Sensor (1867-20) How To
Understanding Gardena System Error Codes
Troubleshooting Water Sensor Errors (E6)
Importance of Regular System Maintenance
Professional Assistance for Complex Errors
Addressing Water Shortage (E1) with Simple Fixes
Preventive Measures for Avoiding Sensor Errors
Routine Checks Enhance System Performance
Occasional Errors: Normalcy vs. Concern
Quick Solutions for Circulation Pump Error (E3)
Importance of Temperature Control in AB-550
Heater Control (E5) and Temperature Sensor (E2) Significance
Realizing the Impact of Error E4 on Gardena Systems
Insights into AquaBed Heater/Cooler Pump (AB-550)
Leveraging Further Reading for In-Depth Knowledge
Community Engagement for Leak Sensor Solutions

Understanding the Water Sensor Error

2.1 What Triggers the Water Sensor Error?

The water sensor error on your Gardena system can be caused by various issues, such as low water levels, malfunctioning temperature sensors, circulation pump problems, and errors in temperature or heater control. Understanding the specific trigger is crucial for effective troubleshooting.

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2.2 Importance of Addressing Water Sensor Errors Early

Ignoring water sensor errors can lead to inefficient watering, affecting your plants’ health and potentially causing damage to the irrigation system. Early detection and resolution are key to maintaining optimal performance.

Common Gardena Water Sensor Error Codes

an electronic device is sitting in the ground next to a plant

3.1 E1: Low Water Level

Error CodeDescriptionSolution
E1Low Water LevelCheck water levels and refill if necessary.

3.2 E2: Temperature Sensor Malfunction

Error CodeDescriptionSolution
E2Temperature Sensor IssueContact Gardena support for assistance.

3.3 E3: Circulation Pump Issues

Error CodeDescriptionSolution
E3Circulation Pump ErrorFollow provided troubleshooting steps.

3.4 E4: Temperature Control Error

Error CodeDescriptionSolution
E4Temperature Control IssueContact Gardena support for assistance.

3.5 E5: Heater Control Error

Error CodeDescriptionSolution
E5Heater Control IssueContact Gardena support for assistance.

3.6 E6: Water Sensor Failure

Error CodeDescriptionSolution
E6Water Sensor FailureContact Gardena support for assistance.

How to Troubleshoot Water Sensor Errors

an image of a water pipe with an arrow pointing to it

4.1 E1 Error: Low Water Level

If you encounter an E1 error indicating low water levels:

  • Check Water Levels: Inspect the water levels in your Gardena system.
  • Refill if Necessary: If levels are low, refill the system with sufficient water.

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By addressing the E1 error promptly, you ensure your plants receive the proper irrigation.

4.2 E2 Error: Temperature Sensor

If your Gardena system displays an E2 error related to the temperature sensor:

  • Contact Gardena Support: Reach out to Gardena support for guidance.
  • Professional Assistance: Consider professional assistance for sensor replacement.

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The temperature sensor is crucial for accurate watering, and timely resolution is essential.

4.3 E3 Error: Circulation Pump

When facing an E3 error indicating circulation pump issues:

  • Follow Troubleshooting Steps: Refer to the troubleshooting guide provided by Gardena.
  • Inspect Pump Components: Check for any visible issues with the circulation pump.

Adhering to the recommended steps can often resolve circulation pump errors.

4.4 E4 and E5 Errors: Temperature and Heater Control

a gas water heater on a blue wall.

For E4 and E5 errors related to temperature and heater control:

  • Contact Gardena Support: Seek assistance from Gardena’s support team.

4.5 E6 Error: Water Sensor

When dealing with an E6 error indicating water sensor failure:

  • Contact Gardena Support: Reach out to Gardena support for expert guidance.
  • Professional Inspection: Consider professional assistance to inspect and replace the water sensor.

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Resolving water sensor errors promptly ensures accurate moisture readings and precise watering.

Preventive Maintenance Tips

5.1 Regular Inspection and Cleaning

To prevent water sensor errors:

  • Inspect Regularly: Conduct routine checks on your Gardena system.
  • Clean Sensors: Keep sensors free from debris to ensure accurate readings.

Regular inspections and cleaning help maintain optimal system performance.

5.2 Proper Water Level Maintenance

  • Check Water Levels: Regularly inspect water levels to prevent E1 errors.
  • Scheduled Refilling: Establish a schedule for refilling to avoid low water levels.

Proper water level maintenance reduces the risk of errors and ensures consistent watering.

5.3 Professional Check-ups

  • Annual Professional Inspection: Schedule annual check-ups by a Gardena professional.
  • Component Check: Have all system components inspected for potential issues.

Professional check-ups provide a thorough evaluation and address potential problems proactively.

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Frequently Asked Questions

6.1 How Often Should I Check My Gardena System?

It’s advisable to perform routine checks every two weeks, ensuring optimal functionality and early detection of potential issues.

6.2 Can I Fix Water Sensor Errors Myself?

While simple issues like low water levels can be addressed independently, for complex errors like sensor malfunctions, professional assistance is recommended.

6.3 Is it Normal to Encounter Water Sensor Errors?

Occasional water sensor errors can happen due to various factors. However, prompt resolution is crucial to maintain system efficiency.


Understanding and troubleshooting water sensor errors in your Gardena system is essential for maintaining an efficient and reliable irrigation setup. Regular inspections, timely resolutions, and professional assistance when needed ensure your garden receives the precise care it deserves.

Further Reading


How do I troubleshoot an E2 Temperature Sensor Error?

To address an E2 Temperature Sensor Error, please refer to the manufacturer’s guidelines. Typically, professional assistance is recommended for accurate diagnosis and resolution.

Can water shortage issues (E1) be resolved without professional help?

In cases of water shortage (E1), simple remedies like refilling water can often resolve the problem. However, persistent issues may require professional inspection.

What preventive measures can I take to avoid water sensor errors (E6)?

Regular inspections, cleaning sensors from debris, and maintaining proper water levels are effective preventive measures against E6 water sensor errors.

How frequently should I perform routine checks on my Gardena system?

It is advisable to conduct routine checks every two weeks to ensure optimal functionality and detect potential issues early on.

Is encountering occasional water sensor errors normal for Gardena systems?

Occasional water sensor errors can occur due to various factors. While normal, addressing them promptly is crucial to maintain system efficiency.