Issues with Boiler Low Water Sensor

⚠️ THIS PAGE IS A WORK IN PROGRESS

Low Boiler Sensor Triggered While Boiler is Full

It's possible the metal probe of the fluid sensor slid down slightly and isn't conducting through the water like it should.


This is what the fluid probe should look like (on the bottom right)

This is what it looks like if slid down


Quick fix:

If you take a side panel off, you might be able to push the probe up with a flat tip screwdriver


More reliable fix:

Empty the boiler and flip the machine upside down. Remove the base plate and push the probe back up. To prevent it from sliding down again, tighten the smaller bolt inside of the bigger one - it should take an 11mm wrench.


View from the side

This is what it looks like with the base removed

This video will show you how to re-install the base plate


If the fluid probe looks normal, it is possible that the connection between it and the 18-connector is somehow faulty.

Remove the back and left side panel (facing the machine) and check the following:

  1. Is the wire running from the fluid sensor kinked?

    TRY: Straightening out wires

  2. Is the wire's pin going into the 18 pin-connector snug?

    TRY: Re-sit pin in 18-pin connector

  3. Does gently wiggling the relevant wire make a difference?

    TRY: Ensure pins in 18-pin connector are not failing to lock into place

    • If pins are not locking in - follow this guide on how to adjust pin locking tabs
    • Are there signs of moisture that might be impacting the circuitry?

      Please add Leak Troubleshooting to your to-do list to ensure moisture does not impact other parts of your machine

  1. Does the fluid sensor work with the back panel removed?

    TRY:

    • Adjusting the wires coming out of the 18-pin connector to minimise pressure from back panel
    • Adjusting the back panel, ensuring it is not bent too far inwards and exerting excess pressure on the wires exiting the connector

NOTES:

  • You only need to remove the left panel (looking from the front of the machine) and the back panel to access the relevant wires. If your steam wand is on the left, note that there may be some residual water in the system upon disassembly.

Email us at support@odysseyespresso.com detailing your findings and we will ship you new replacement parts


Boiler Fluid Sensor Not Detecting When Boiler is Empty


The fluid sensor reports a low boiler when no conductance is found from the tip of the low fluid level sensor to the boiler wall, so this issue is most likely caused by a grounding issue with the sensor wires.

We need to remove the left side panel to access the 18-pin connector here

We'll want to check that the green wire #7 going into the 18-pin connector is secure/has a good connection, and the long red wire #8 going to the probe is also good. Make sure both are secure in the 18-pin connector and, if you give a gentle tug the wire, it doesn't come out of the connector.

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