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:
- 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:
- 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.
- 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.