Our commercial catering engineers recently attended a service call in Loughton following a report of multiple faults affecting a Rational combi oven installed in a professional kitchen preparing for a new restaurant opening.
The client reported that the steam function was not operating correctly, the oven was leaking, and the door seal had visibly deteriorated. Due to the critical role of combi ovens in commercial kitchens, a prompt inspection was required to determine the cause of the faults and assess whether repair or replacement would be the most practical solution.
Our engineer carried out a full diagnostic inspection of the appliance, checking the steam generation system, heating components, probes, seals, and overall condition of the oven.
Faults Reported by the Client
The restaurant owner contacted our engineers after noticing several issues affecting the oven’s performance.
Reported faults included:
- Steam function not operating
- Water leakage from the oven
- Worn and perished door seal
These symptoms can significantly impact the cooking performance of a commercial combi oven, particularly when steam cooking, regeneration, or humidity-controlled cooking is required.
Engineer Inspection & Diagnostic Findings
After carrying out a full inspection of the Rational oven, our catering engineer identified several additional faults contributing to the appliance malfunction.
The engineer found:
- Steam function failure
- Water leakage
- Perished door seal
- Heating probes faulty
- Probe cable broken
- Heavy scale build-up requiring a full descale
Scale accumulation can significantly affect steam generation systems and heating sensors, particularly in commercial kitchens where ovens operate continuously.
The damaged temperature probe cable and faulty probes would also prevent the oven from accurately monitoring internal cooking conditions.
Condition of the Appliance
During the inspection, it became clear that the appliance had multiple age-related faults and wear across several components.
Because of the number of issues identified and the overall condition of the oven, the engineer discussed the available options with the client.
These included:
- Carrying out multiple repairs and component replacements
- Performing a full descale and servicing procedure
- Considering replacement with a new combi oven, particularly as the equipment is intended for use in a new restaurant kitchen
In many cases, older catering appliances with multiple faults can become less cost-effective to repair compared with installing a modern unit with improved efficiency and reliability.
The client is currently reviewing the options and considering whether replacement of the appliance would be the best long-term solution.
Importance of Professional Combi Oven Diagnostics
Combi ovens are one of the most complex pieces of equipment in a commercial kitchen, combining:
- Convection heating
- Steam cooking
- Precise temperature and humidity control
Faults affecting probes, steam systems, or seals can lead to:
- Inconsistent cooking results
- Extended cooking times
- Water leakage
- Increased energy consumption
- Complete failure of steam cooking functions
A professional inspection by experienced catering engineers ensures faults are accurately diagnosed and the correct repair or replacement recommendation is provided.
Commercial Rational Oven Engineers
Fix & Repair Engineers provide diagnostics, repair, servicing, and installation for Rational combi ovens and other commercial catering appliances across London, Essex, and surrounding areas.
Our engineers regularly support:
- Restaurants
- Commercial kitchens
- Catering businesses
- Hotels
- Pubs and hospitality venues
- Food production facilities
Services include:
- Fault diagnostics
- Combi oven repairs
- Heating probe replacement
- Steam system repairs
- Door seal replacement
- Descaling and servicing
- New appliance installation
For Rational equipment and other professional kitchen appliances, our team provides fast engineer callouts and expert technical support.
Need Commercial Catering Equipment Engineers?
If your commercial kitchen equipment is experiencing faults or performance issues, our engineers can provide rapid inspection and professional repair services.
We support catering businesses across London, Essex, and the surrounding counties.
- See our main service: Commercial Catering Equipment Repairs
- Specialist brand service: Rational Catering Equipment Repairs
Contact Fix & Repair Engineers to book a diagnostic visit or discuss replacement options for commercial kitchen equipment.
With many years on the tools in all aspects of the engineering industry has given me a second to none skill set which enables me to provide a leading professional service to my customers with a wealth of knowledge and highly skilled engineers to successfully cover all your plumbing, heating, AC and catering equipment requirements.
