Error Code
medium
Hobart LXn/LXGn – LXn/LXGn Will Not Drain
On your HOBART LXn/LXGn SERIES DISHWASHERS unit, a "Machine Will Not Drain"…
Hobart LXn/LXGn - Error 083: Minimum Final Rinse Temperature Not Reached
Caution / Monitor Closely
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 083 indicates that the final rinse temperature failed to reach the required minimum after three consecutive cycles. This often points to issues with the booster heater, incoming water temperature, or a faulty temperature sensor. Promptly address this to ensure proper dish sanitization and compliance with hygiene standards.
Technical Details
Repair Steps:
- Verify Incoming Hot Water Supply: Ensure that the hot water supply to the dishwasher meets the manufacturer’s recommended temperature (typically 120-140°F / 49-60°C) and pressure specifications. Insufficient incoming hot water can prevent the booster heater from reaching the target rinse temperature.
- Inspect the Booster Heater: Check the booster heater’s functionality. This includes testing the heating elements for continuity and resistance, verifying that the contactor pulls in, and confirming proper voltage supply. Look for any visible signs of damage or loose wiring connections.
- Examine the Final Rinse Temperature Sensor: The temperature sensor (thermostat or probe) that monitors the final rinse water may be faulty or inaccurately calibrated. Test its resistance values according to the service manual or replace it if it’s suspect. Ensure it’s correctly positioned in the rinse manifold.
- Check for Scale Buildup: Significant lime scale accumulation inside the booster tank, heating elements, or rinse manifold can severely reduce heating efficiency and water flow. Descale the unit using an appropriate commercial descaler if buildup is present.
- Review Control Board Connections and Logic: While less common, a malfunctioning control board or loose electrical connections could lead to incorrect temperature readings or heating command failures. Inspect all wiring connections to the booster heater, sensor, and the main control board.
- Assess Rinse Arm and Nozzle Blockages: Although not a direct cause of temperature failure, blocked rinse arm nozzles can reduce the effectiveness of the rinse cycle, potentially contributing to inconsistent temperature distribution. Clean the rinse arms and nozzles thoroughly.
Common Questions:
Q: Why is the final rinse temperature so critical in a commercial dishwasher?
A: The final rinse temperature is critical for two main reasons: sanitization and drying. High temperatures ensure thermal sanitization, killing bacteria and meeting health code requirements, and promote rapid evaporation for spot-free drying.
Q: Can I manually clear Error 083, or will it persist?
A: The display instructs to “Press the ENTER button to clear the error.” You can clear the error temporarily, but if the underlying cause (e.g., faulty heater, low water temperature) is not resolved, the error code 083 will reappear after subsequent cycles.
Q: What is the most common component failure that triggers Error 083?
A: The most frequent cause for Error 083 is a malfunctioning booster heater, which is responsible for elevating the incoming hot water to the required final rinse temperature. This could be due to a failed heating element, contactor, or thermal cut-out.
When to call a technician
Consider calling a certified technician if:
- The error keeps coming back after you've tried the steps above.
- You're not comfortable doing the checks or repairs yourself.
- You notice unusual noise, smell, or behaviour.
- Equipment is under warranty and you want official service.
- You need the unit back in service quickly with minimal downtime.