Commercial dishwasher and combi oven error codes
What the display is telling you, safe checks to try first, and when to call a technician — by brand and model family.
Error on the display and service starting soon? Call 0800 90 60 30. Calls are answered 24 hours, 7 days. Technician cover runs 7 days, with after-hours emergency cover. We aim to respond to emergencies within 2 hours, depending on workload. This is a target, not a guarantee.
Error codes are not interchangeable between brands, and they often differ between model families of the same brand. Photograph the display, note the model from the rating plate, and open the page that matches your machine.
- Starline and Washtech dishwasher error codes — electronic keypad and newer touchscreen (WI-200) machines
- Winterhalter error codes — UC series and PT series
- Classeq error codes — C400, C500, D500 and P500
- Rational error codes — iCombi Pro and Classic; SelfCookingCenter and CombiMaster Plus
- Convotherm error codes — Convotherm 4 (easyDial and easyTouch) and maxx
CES Wellington is Rational trained and approved, and a service agent for Winterhalter and Convotherm. We also service and repair Starline and Classeq dishwashers. See before you call for other checks you can do safely.
Leave the panels on. There are live electrical parts inside. If you see water near electrics or smell burning, switch off at the wall or isolator if it is safe to do so, and call us.
FAQ
Where can I look up a dishwasher or combi oven error code?
Start at this page and open the brand that matches your machine: Starline and Washtech, Winterhalter, Classeq, Rational, or Convotherm. Codes are not interchangeable between brands. Photograph the display and call 0800 90 60 30 if you are unsure.
Do Winterhalter and Classeq use the same error codes?
Winterhalter PT pass-through machines use the same E01–E28 style codes as Classeq C400, C500, D500 and P500. Winterhalter UC undercounter machines use a different Err 1, Err 2 set. Use the matching section on each brand page.
Do Rational and Convotherm use the same codes?
No. Rational iCombi, SelfCookingCenter and CombiMaster Plus codes are different from Convotherm 4 and maxx codes, and they also differ between those families. Open the page for your brand.
What should I do before I call?
Photograph the display, note the make and model from the rating plate, and try only the safe checks on the brand page — such as confirming the water tap is open, or closing a door. Leave the panels on. Then call 0800 90 60 30.
Can you attend the same day?
Calls are answered 24 hours, 7 days. Technician cover runs 7 days, with after-hours emergency cover. After-hours charges may apply. Call 0800 90 60 30.
Error still showing?
Call 0800 90 60 30 or book a job. The line is answered 24 hours, 7 days. Extra or out-of-hours charges may apply.