---
title: Troubleshooting Lost 24V and Non-Functional Sample/Clean Water Solenoid Valve
description: When dealing with a non-functional sample/Clean water solenoid valve, it's crucial to ensure that the system is correctly connected and that all components are functioning as expected.
---

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# Troubleshooting Lost 24V and Non-Functional Sample/Clean Water Solenoid Valve

## When dealing with a non-functional sample/Clean water solenoid valve, it's crucial to ensure that the system is correctly connected and that all components are functioning as expected.

Here’s a step-by-step guide to troubleshoot and resolve the issue;

> **Step 1: Verify Connections**

First, make sure that the solenoid valve is connected to the correct terminal:

![](https://hub.rivertrace.com/hs-fs/hubfs/image-png-Jan-13-2025-02-45-31-1272-PM.png?width=503&height=373&name=image-png-Jan-13-2025-02-45-31-1272-PM.png)

- Label 1: This is designated for the Sample/Clean water Solenoid Valve.
- Label 2: This is for the Air Solenoid Autoclean

> **Step 2: Measure Voltage Output**

Next, measure the voltage output to the solenoid valve when the clean water feed is activated:

![](https://hub.rivertrace.com/hs-fs/hubfs/image-png-Jan-13-2025-02-46-16-7487-PM.png?width=688&height=338&name=image-png-Jan-13-2025-02-46-16-7487-PM.png)

- Expected Voltage: 24 volts.

> **Step 3: Check the Relay**

If you do not find 24 volts, the relay might be stuck. Here’s what to do:

- Tap the Relay: Sometimes, gently tapping the relay can free it if it’s stuck.
- Recheck Voltage: Measure the voltage again to see if 24 volts are present.

> **Step 4: Inspect the Cable**

If you find 24 volts at Relay , but it is still not functioning, the problem might be with the cable:

- Check for Disconnections or Faults: Inspect the cable for any signs of disconnection or damage. ![](https://hub.rivertrace.com/hs-fs/hubfs/image-png-Jan-13-2025-02-49-16-5816-PM.png?width=617&height=326&name=image-png-Jan-13-2025-02-49-16-5816-PM.png)
- Replace the Cable: If a fault is found, replace the cable to restore functionality.

> **Step 5: Replace PCB (IO) if Necessary**

If there is still no 24 volts after tapping the relay, the issue might be with the PCB (IO):

- Replace PCB (IO): If the relay is not functioning properly, replacing the entire PCB (IO) may be necessary.

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