Authorised Service PartnerRational Oven Repair — Authorised Service Partner, London & Home Counties
Authorised Rational engineers, same-day response across London and the Home Counties. Genuine parts, 12-month warranty on every repair.
0203 887 1728 — lines open Mon–Sat
Rational Models We Repair
Our authorisation covers the complete current and recent Rational range. We carry OEM parts for all models listed below.
iCombi Pro
Rational's flagship intelligent combi-steamer. We repair all fault codes, PCB failures, steam generator issues and sensor faults across the full iCombi Pro range.
iCombi Classic
A reliable workhorse in professional kitchens. Our engineers are trained on all iCombi Classic hardware including heating elements, drain systems and control panels.
SelfCookingCenter
The SelfCookingCenter range demands precision servicing. We carry genuine Rational parts for SCC drainage, steam and cleaning system repairs.
SelfCookingCenter WE
The water-efficient variant of the SelfCookingCenter introduces unique hydraulics. Our engineers are trained on the full WE-specific component set.
CombiMaster Plus
Manual-control combi ovens that still require specialist diagnosis. We repair heating, steam, gas and electrical faults across the CombiMaster Plus range.
CombiMaster
Older CombiMaster units are still widely in service. We stock legacy parts and can source OEM components for older combi oven variants.
iVario Pro
Rational's intelligent tilting pan and bratt pan. We service iVario Pro heating elements, controls, drain valves and temperature management systems.
Vario Cooking Centre
The multi-cooking platform for high-volume kitchens. We repair Vario Cooking Centre pressure, heating and drainage systems to manufacturer specification.
iHexagon
Rational's latest induction cooking centre. Our engineers are trained on iHexagon induction electronics, power modules and cooling systems.
Common Faults We Fix
Every symptom below has an underlying cause our engineers diagnose on the first visit. Where specific Rational error codes are relevant, we link to the full code guide.
Oven Not Heating
Temperature failures are often caused by a faulty heating element, a failed temperature sensor, or a PCB control issue. Our engineers carry common heating elements for same-day replacement and will perform a full combustion check on gas models to identify the root cause.
Error Codes & Service Codes
Rational ovens display numbered service codes when a fault is detected. These codes point directly to the affected component — drainage, steam, gas or electrical. We diagnose from the code, confirm the fault, and carry out the repair in a single visit where parts allow.
Poor Steaming or No Steam
Steam failures are most commonly caused by a scaled or faulty steam generator, a failed steam valve, or a water supply issue. We descale, replace or repair the steam generator to restore the correct cooking environment and run a full functional test before leaving site.
Gas Smell or Ignition Fault
A gas odour or ignition failure requires immediate attention. As Gas Safe registered engineers, we perform safe isolation, identify the source — ignition electrode, gas valve or pipework — and carry out the repair to Gas Safe standards.
Overheating
Ovens running above target temperature typically indicate a faulty thermostat, a stuck relay on the control board, or a temperature sensor reading incorrectly. We test and replace the relevant component and calibrate the oven temperature before sign-off.
Fan or Airflow Problems
Reduced airflow or fan noise points to a worn fan motor, a blocked impeller, or a bearing failure. Uneven cooking is often the first symptom. We replace fan motors with genuine Rational parts and test cooking performance across multiple cycles.
Uneven Cooking Results
Uneven cooking typically indicates an airflow problem, a failed fan motor, or a defective temperature probe. We carry out a full diagnostic — checking fan performance, sensor calibration and door seal integrity — to identify and correct the cause.
Electrical or PCB Faults
PCB and electrical failures can cause erratic behaviour, display errors or complete shutdowns. We use Rational diagnostic tools to identify board-level faults and replace PCB assemblies with genuine OEM components backed by a 12-month parts warranty.
Drainage System Blockages
A blocked condensate drain system (CDS) is one of the most common Rational faults and a frequent trigger for service codes. We clear blockages, replace drain hoses and inspect drain pumps — and advise on cleaning cycles that prevent recurrence.
Rational Error Codes We Diagnose
Rational ovens display service codes when the system detects a fault. Below are the most common error codes our engineers are called out to resolve.
The Rational Service 10 error indicates that the self-cleaning (SC) pump is experiencing elevated water levels, which ca…
Service 10 error code guide →Service 100 indicates either a defective SC (self-cleaning) pump or a calcified level electrode. Both faults affect the…
Service 100 error code guide →The Rational Service 11 error indicates that the CDS (Condensate Drain System) sensor is registering an unusually high n…
Service 11 error code guide →The Rational Service 12 error indicates that the CDS sensor is not transmitting any signal, preventing the oven from mon…
Service 12 error code guide →The Rational Service 13 error indicates that during steam cooking mode, the steam generator is not receiving water as ex…
Service 13 error code guide →Service 14 indicates that the level electrode is unable to detect water in the steam generator, despite water being pres…
Service 14 error code guide →Why an Authorised Service Partner Matters
Anyone can claim to repair Rational ovens. Only an authorised service partner can offer what's below.
Genuine OEM Parts Only
We use exclusively genuine Rational parts — not third-party equivalents. Each part carries the manufacturer's specification and is covered by a 12-month warranty. This is only possible as an authorised partner with direct access to Rational's parts supply chain.
Factory-Trained Engineers
Our engineers complete Rational's own factory training programme and hold current authorisation to work on the full range of Rational equipment. They have direct access to Rational's technical support and proprietary diagnostic tools.
Manufacturer-Backed Warranty Work
As a Rational Service Partner, we are authorised to carry out both in-warranty and out-of-warranty repairs. Your manufacturer's warranty remains intact — and our own 12-month parts and labour warranty applies to every repair we carry out.
Authorised for the Full Range
From the current iCombi Pro and iVario Pro to older SelfCookingCenter and CombiMaster units, our authorisation covers the complete Rational range. We carry commonly needed parts in our vans for a high first-visit fix rate.
How a Repair Works
Call or Book Online
Phone us direct or use our online booking. We'll confirm a same-day or next-day slot and take details of any error codes or symptoms.
Diagnostic Visit
An authorised Rational engineer attends site, reads error codes with Rational diagnostic tools, identifies the fault and agrees the repair scope with you.
Repair with Genuine Parts
We carry commonly needed Rational OEM parts in our service vehicles. Most repairs are completed on the first visit. We test fully before leaving site.
12-Month Warranty
Every repair is backed by a 12-month parts and labour warranty. We provide a written service report and can set up a service plan to prevent future breakdowns.
Emergency Rational Oven Repair
Kitchen downtime is costly. Our engineers offer rapid response across London and the Home Counties — same-day attendance for most central London callouts.
Response Times & Coverage
Same-day callout availability across London; most Home Counties callouts attended within 24 hours.
Not sure if we cover your postcode? Call us to confirm or send us a message.
Trusted by London's leading hospitality groups
Why Choose Our Rational Engineers?
We are an authorised Rational Service Partner with over 15 years of experience servicing commercial Rational equipment in professional kitchens across London and the Home Counties.
- Factory-trained, authorised Rational engineers
- Genuine Rational OEM parts — always
- 12-month parts and labour warranty
- Same-day emergency response available
- Gas Safe registered — all gas work certified
- 90% first-time fix rate
- CEDA approved
Rational Oven Repair — Frequently Asked Questions
How quickly can you attend a Rational oven breakdown?
We offer same-day callout availability across London and the Home Counties. Most central London callouts are attended the same day; Home Counties within 24 hours. Call us direct for fastest response.
Do you repair out-of-warranty Rational ovens?
Yes. We repair Rational ovens both within and outside the manufacturer's warranty period. All repairs use genuine Rational OEM parts and are covered by our own 12-month parts and labour warranty regardless of the oven's age.
Do you use genuine Rational parts?
Yes — always. As an authorised Rational Service Partner, we source parts directly through Rational's supply chain. We do not use third-party or pattern parts. Genuine OEM parts ensure correct fitment and carry their own 12-month warranty.
What does a callout cost?
We charge a fixed callout and diagnostic fee. Contact us for current rates — we'll confirm the cost before you book. There are no hidden charges; any parts and additional labour are quoted clearly before work begins.
Do I lose my Rational warranty if I use you for repairs?
No. Because we are an authorised Rational Service Partner, all repairs we carry out are manufacturer-recognised. Your Rational warranty remains intact whether your oven is in or out of the original warranty period.
Need a Rational Oven Repair Engineer?
Authorised Rational engineers, same-day response. Call now or book online.