Error Code
high
Hobart LXe – LXe Will Not Drain
On your LXe SERIES DISHWASHERS unit, a "machine will not drain" issue…
Hobart LXe - No Operation (with display)
Critical / Stop Operation
Warning: The information provided here is for educational purposes only.
Working with commercial kitchen equipment involves high voltage, gas, and high temperatures.
We strongly recommend contacting a certified service technician for any repairs.
We are not responsible for any damage or injuries resulting from DIY repair attempts.
This information is provided 'as is' without any guarantees of completeness or accuracy.
TLDR
On your LXe SERIES DISHWASHERS unit, "No machine operation" often indicates either an open door or a water fill issue. Check that the door is securely latched. If the display shows "DOOR OPEN" and re-closing doesn't resolve it, or if the machine fails to fill, further investigation into door interlocks or water supply components is required.
Technical Details
Repair Steps:
- Check Door Latch and Seal:
- Ensure the dishwasher door is completely closed and latched. Open and re-close it firmly to ensure proper engagement.
- Inspect the door gasket and hinges for any damage or misalignment that might prevent a complete seal, which can trigger a “DOOR OPEN” sensor.
- Verify Water Supply:
- Confirm that the main water supply valve to the dishwasher is fully open.
- Check for any kinks or obstructions in the water inlet hose.
- Inspect the external water filter (if applicable) for clogging and clean or replace it if necessary.
- Inspect Door Interlock Switch:
- The “DOOR OPEN” message is triggered by a door interlock switch. If closing the door doesn’t clear the message, the switch may be faulty or misaligned.
- WARNING: Disconnect power before inspecting internal components. Locate the door interlock switch, typically near the door latch mechanism.
- Test the continuity of the switch with a multimeter when the door is closed. Replace the door interlock switch if it’s faulty.
- Examine Water Inlet Valve and Float Switch:
- If the machine will not fill, the water inlet valve may be clogged or defective. Test for voltage at the valve during the fill cycle and check for continuity.
- Check the float switch (or water level sensor) in the wash tank. A stuck float or faulty sensor can prevent the machine from filling or cause it to overfill. Clean the float area of debris and test the switch’s operation.
- Consult Technical Manual or Service:
- If these steps do not resolve the issue, consult the Hobart LXe SERIES DISHWASHERS service manual for detailed wiring diagrams and diagnostic procedures specific to your model.
- If you are uncomfortable performing these checks or the problem persists, contact your local Hobart Service Office for professional assistance.
Common Questions:
Q: Why does my Hobart LXe display “DOOR OPEN” even when it’s closed?
A: This typically indicates that the door interlock switch is not engaging correctly, is faulty, or is misaligned. Inspect the door latch mechanism and the switch for any physical damage or obstructions.
Q: What should I do if my Hobart LXe isn’t filling with water?
A: First, verify the main water supply valve is open and the inlet hose isn’t kinked. Then, check the water inlet valve for clogs or failure, and inspect the float switch or water level sensor in the wash tank for proper operation or debris.
Q: Can I fix a “No machine operation” issue myself?
A: For basic checks like ensuring the door is latched or water supply is open, yes. However, troubleshooting internal components like interlock switches, water valves, or level sensors requires electrical knowledge and tools. If unsure, it’s best to contact a certified Hobart technician.
When to call a technician
For this error, we recommend calling a certified technician. Do not continue operation or attempt repair yourself.
- Equipment shows a critical or stop-operation fault.
- You smell gas, burning, or see smoke or sparks.
- Error returns after following the steps above.
- You are not trained to work on this equipment.
- Warranty or safety could be affected by DIY repair.