Understanding Winterhalter Error Codes: A Deep Dive

Why Error Codes Matter

Error codes play a critical role in maintaining smooth kitchen operations. They allow staff and technicians to:

• Minimise downtime by highlighting specific faults

• Improve the efficiency of maintenance and repairs

• Avoid unnecessary trial-and-error troubleshooting

• Prevent operational delays during peak service times

• Understanding these codes helps keep dishwashing equipment running smoothly and efficiently.

• They help with Glasswasher repair & commercial dishwasher repair.

Common Winterhalter Error Codes and Their Meanings

Here is a list of some of the most frequently encountered error codes across various Winterhalter models:

E1 / E2 – Water Filling Fault

Likely Cause: No water supply or issue with the inlet valve.
Suggested Action: Check the water connection, inlet filters, and ensure the valve is functioning properly.

E3 – Heater Fault (Wash Tank)

Likely Cause: Faulty heating element or temperature sensor.
Suggested Action: Inspect the tank heater and thermistor, and check wiring for damage.

E4 – Rinse Boiler Heating Fault

Likely Cause: Boiler heating element or NTC sensor malfunction.
Suggested Action: Test the boiler element and sensor connections.

E5 – Water Temperature Too Low

Likely Cause: Slow heat-up time or heat loss.
Suggested Action: Check the heating components and ensure the machine is not in a cold environment.

E6 – Drain Fault

Likely Cause: Drain pump is blocked or slow.
Suggested Action: Clean the pump, check for debris in the drain line and filters.

E7 – Chemical Dosing Fault

Likely Cause: Issue with detergent or rinse aid pump.
Suggested Action: Inspect the chemical pumps, tubing, and ensure correct settings are applied.

E8 – Overflow Error

Likely Cause: Too much water in the tank.
Suggested Action: Check the float switch, water level sensor, and ensure the drain is not obstructed.

E9 – Communication Error

Likely Cause: Fault with control board or internal wiring.
Suggested Action: Examine electronic boards and wiring for loose connections or damage.

E10 – Door Not Closed

Likely Cause: Door switch is not activated or the door isn’t properly latched.
Suggested Action: Ensure the door is fully shut and inspect the door switch mechanism.

E11 – Filter System Fault

Likely Cause: Filters are blocked, missing, or incorrectly fitted.
Suggested Action: Clean all filters thoroughly and reinstall them correctly.

Troubleshooting Guide

1. Identify the Error Code
   Note the code displayed. Some models also store historical error logs.

2. Restart the Machine
   Turn off the unit and restart after a short pause. This may resolve temporary faults.

3. Refer to the User Manual
   Each model has a manual with a section dedicated to error code explanations.

4. Inspect for Obvious Issues
   Check for disconnected wires, blocked spray arms, empty chemical containers, or clogged filters.

5. Contact Technical Support if Necessary
   If basic troubleshooting does not resolve the issue, contact an authorised Winterhalter service partner.

Preventive Maintenance Tips

To avoid error codes and reduce downtime, adopt these best practices:

• Clean the machine daily, especially filters and wash arms

• Check chemical levels regularly and top up when needed

• Descale the machine in hard water areas as per manufacturer’s guidance

• Schedule regular servicing every 6 to 12 months

• Train staff to recognise and respond to error codes promptly

About Winterhalter

Winterhalter is a leading manufacturer of premium commercial dishwashing systems, including undercounter glasswashers, passthrough dishwashers, and utensil washers. Renowned for their efficiency, reliability, and smart technology, Winterhalter machines are a staple in the hospitality, catering, and healthcare sectors.

Modern models are equipped with digital displays and error code systems, which help users and engineers quickly identify and resolve issues before they escalate.

When to Call a Service / Catering Engineer

Professional intervention is recommended when:

• The same error occurs repeatedly

• Electrical faults are suspected (e.g. codes E3, E4, or E9)

• The machine fails to restart or reset

• Parts such as sensors or pumps need replacing

• Working with an approved service engineer ensures correct diagnosis and repair, preserving warranty and machine performance.

Winterhalter error codes are not just technical messages—they are essential tools for maintaining the high standards expected in commercial kitchens. With a basic understanding of these codes, kitchen teams can reduce downtime, extend equipment lifespan, and ensure hygiene standards remain uncompromised.

For teams managing multiple dishwashers, consider creating a laminated quick-reference guide for your staff to keep near each unit.