Commercial kitchen equipment repair in London: what breaks and why
LE Company repairs commercial kitchen equipment across London: combi ovens such as Rational and Unox, Winterhalter and Hobart dishwashers, commercial refrigeration, gas ranges and grills. Looking back over our service reports from September to November 2026, one cause runs through most of the breakdowns: water and the lack of regular service. Scale, a blocked wash system, a leak into the electronics. That is why every repair we do starts with checking and cleaning the equipment; after a proper service, much of it starts working again. For the full list of what we cover, see our commercial kitchen repair and catering equipment repair pages.
Combi oven repair: what we find on Rational and Unox
A leak that trips the fuse board. A Unox BakerTop combi oven kept tripping the electrics. Inside, the main water pressure switch had snapped, water had got into the washing and humidity unit, and the leak had damaged the contactor. There were heavy scale deposits underneath. We replaced the washing and humidity unit and fitted a water filter; on the return visit the steam control, burnt out by the earlier leak, also had to be replaced. See our Unox oven repair page.
Rational stopped mid-clean with error S_110. A Rational iCombi Pro stopped in an interrupted cleaning cycle with S_110, an automation error during cleaning. We replaced the pump housing, exchanged the water filter cartridge and descaled the whole water system. One detail worth knowing: the oven will not accept a reset of the manual descaling request until a long cleaning cycle has been completed. More codes in Rational oven error codes explained.
Food at the top cooks faster than at the bottom. On a Rational SelfCookingCenter the self-test passed three times with no error. In heating mode the lower fan motor slowed down periodically, and on the motor test it did not reach its rated output. The motor reports no error to the oven, so only a test finds it. On another Rational an impeller out of balance had vibrated hard enough to damage the heating element at its mounting. See our Rational oven repair page and whether a Rational oven is worth repairing.
Commercial dishwasher repair: Winterhalter and Hobart
Descaled with too little descaler. The owner of a Winterhalter hood-type dishwasher had tried to descale it themselves with too little descaler. The residue turned into sludge and blocked the whole waste pipe and the drain pump, and during the cleaning we found ruptured pipes. It took the hose kit, the boiler connections and new flexible pipework, and on the final check a micro-crack in the drain pipe.
Winterhalter error 35. Water was getting into the base of a pass-through machine. The cause was a heavy blockage in the wash system: with the wash pump building pressure, water backed out at the inlet to the wash arms. Read Winterhalter error codes.
Moisture behind the display. On a Hobart undercounter dishwasher, droplets of water had got behind the screen cover into the display. Read the Hobart display moisture case and Hobart dishwasher error codes.
See our Winterhalter dishwasher repair, Hobart dishwasher repair and commercial dishwasher repair pages.
Commercial refrigeration repair
A commercial refrigeration unit had lost its refrigerant through a leaking evaporator. We fitted a new evaporator and leak-tested the system, and then found the compressor had failed as well, so the unit could not run until a new compressor was fitted. A refrigerant leak left too long takes the compressor with it. See our commercial refrigeration repair page.
Why regular service is the key
Almost every case above began with water, scale or dirt that a regular service would have caught: a water filter not changed, a wash system not cleaned, a machine descaled the wrong way. Every repair we do starts with checking and cleaning, and very often the equipment works again after the service alone. For planned maintenance, see catering equipment maintenance and restaurant equipment maintenance.
Book a commercial kitchen equipment repair in London
LE Company’s call-out is from £175 + VAT and includes the first 30 minutes on site, when the engineer finds the cause of the fault. The cost of the repair is agreed with you before any work starts. Our engineers are Gas Safe registered. For a breakdown during service, see emergency restaurant equipment repair, or call +44 203 603 7172.