

Rational Service 50: the oven clock needs setting
The iCombi Pro keeps a clock for logs, cleaning schedules and HACCP records.
Mon–Sat, 8am–8pm
- Controls and power
- Commercial controls and board repair
- Source: Rational
Book a visit
Three short steps, about a minute.
or call (844) 571-4566
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What Service 50
actually means.
The iCombi Pro keeps a clock for logs, cleaning schedules and HACCP records. Service 50 reports that the clock on the CPU has not been set. Rational's instruction is simply to set the date and time.
Rational commercial appliance display · also shown as 50
What to do when Service 50 shows on the commercial applianceKind of codeControls and power
The controller itself is reporting trouble, or the supply behind it is: a display with dead segments, a keypad that stopped responding after steam or degreaser got behind it, relays that stick, stored recipes or cycles that vanished overnight, a blown control fuse, or one leg of a three-phase feed missing so half the heat or the pump is gone. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, a scorched smell or any sign of moisture behind the panel means the breaker stays off, and that is a visit.
Usually leads toCommercial controls and board repair
Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so.
Shows up asCommercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display
A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone.
MakeRational
A Rational visit is timed after the evening cleaning cycle, when the cabinet is cool and the display can be read without a load inside.
SourceRATIONAL iCombi Pro floor units 20-1/1 and 20-2/1, original instructions for use (US English)
Listed in the error message tables of the iCombi Pro floor unit instructions for use (models 20-1/1 and 20-2/1, US English edition).
Before you book,
in this order.
Each step comes from Rational's own guidance for Service 50 on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Open the settings and set the date and time.
If the oven is connected to ConnectedCooking, turn on time synchronization so the clock is set automatically.
If Service 50 comes back after every power cut, book a visit, since Rational lists a defective battery as Service 51.
Still there?
It usually turns into commercial controls and board repair. Book with the code and the model number.
What not to do
Service 50 is not a heating or water problem and does not stop cooking. When it keeps returning, the likely companion is Service 51, a defective battery.
What you may
notice with it.
The commercial appliance problem Service 50 tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problemsWhere Service 50 usually leads
Commercial controls and board repair.
Rational
commercial appliances.
A Rational visit is timed after the evening cleaning cycle, when the cabinet is cool and the display can be read without a load inside.
Rational commercial appliance repairMore Rational codes
Controls and power on other makes
In Rational's own words
The real time clock on the CPU is not initialised. Set the date and time.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed in the error message tables of the iCombi Pro floor unit instructions for use (models 20-1/1 and 20-2/1, US English edition).
Rational Service 50 commercial appliance repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about Service 50.
Can I clear Service 50 myself?
How do I clear Service 50 on a Rational?
Why does Service 50 matter for a Rational in a busy kitchen?
Why does my Rational lose its clock after each power cut?
Back to your everyday
Still showing Service 50?
A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.