Hobart LXn/LXGn - Error 033: Fill Valve Error

🛑 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 LXn/LXGn SERIES DISHWASHERS unit, error code 033 indicates that the fill valve has remained active longer than the maximum allowed fill time, suggesting a problem with water ingress. This typically points to issues with the incoming water supply, pressure, or the fill valve itself. Initial troubleshooting involves checking the water supply, hose, and pressure before inspecting internal components.

Can't fix it yourself?

Our certified technicians can help you on-site.

Technical Details

Repair Steps:

  1. Check Incoming Water Supply and Hose: Verify that the main water supply valve to the dishwasher is fully open. Inspect the fill hose for any kinks, twists, or obstructions that might restrict water flow. Ensure any external water filters are not clogged.
  2. Verify Water Pressure: Use a pressure gauge to confirm that the incoming dynamic water pressure is within the specified range of 15-65 psi (103-448 kPa). Low water pressure can cause extended fill times, triggering the error.
  3. Inspect Fill Valve Screen/Strainer: Turn off the water supply to the machine. Disconnect the fill hose from the fill valve and check the small screen or strainer located inside the fill valve inlet for debris or mineral buildup. Clean if necessary.
  4. Test Fill Valve Operation: With power disconnected, check the continuity of the fill valve solenoid coil (typically 20-50 ohms). If open or shorted, replace the valve. Apply appropriate voltage (e.g., 120V AC for common types) directly to the valve terminals (with water supply on) to see if it opens and allows water flow. If the valve does not open, it is faulty.
  5. Examine Water Level Sensor/Probe: If the machine is filling but not registering, the water level sensor (often a probe or float switch) might be faulty or scaled. Clean any scale buildup on probes or test the float switch for proper operation. A faulty level sensor can prevent the control from knowing the tank is full, thereby keeping the fill valve open.
  6. Check Control Board Output: As a last resort, if all external components and sensors check out, use a multimeter to verify if the control board is sending continuous voltage to the fill valve even after the tank should be full. A faulty control board could be stuck in a “fill” state. If so, the control board may need replacement.
  7. Clear Error and Retest: After performing any corrective actions, press the ENTER button on the dishwasher control panel to clear the error. Initiate a wash cycle to observe if the machine fills correctly and the error persists.

Common Questions:

Q: What does error code 033 specifically mean for my Hobart LXn/LXGn dishwasher?

A: Error code 033 indicates that the dishwasher’s fill valve has been open for an excessive duration, exceeding the maximum allowed time to fill the wash tank. This suggests an issue preventing sufficient water from entering the machine.

Q: What are the first things I should check if I see a Hobart 033 error?

A: Start by ensuring the main water supply valve to the dishwasher is fully open and that the incoming fill hose is not kinked or obstructed. Also, verify that your building’s water pressure meets the machine’s requirement of 15-65 psi.

Q: When should I contact Hobart Service for an error 033?

A: You should contact Hobart Service if, after checking the water supply, pressure, hose, and performing basic troubleshooting steps like inspecting the fill valve screen or testing the valve’s operation, the error code 033 persists, or if you are unsure how to proceed with internal component checks.

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.

Need Professional Help?

Our certified technicians can help you on-site.

Other LXn/LXGn Error Codes

🔧 Fix this Error - Call Pro