What causes a Rational service error 10? Water was not
pumped out during an SC cycle or tubing is possibly blocked or restricted
Qualified
Rational engineer advice: Check the SC pump
works and that it is not blocked up. Check for restrictions in SC pump tubes
What is the cause of a service 11 error on
WE101 combi oven? CDS sensor sends too many pulses whilst refilling the steam
generator
Factory
trained engineer comment: The CDS
sensor may not be set to 1000 pulses per litre of water entering the steam
tank. The air break valve above the steam generator may not be closing during
the filling cycle. Check that the steam tank level electrode is good and check
for leaks on the water pipe work that supplies the steam generator.
Rational Combination oven service error 12 is
caused by? The onboard CDS sensor has no signal, the CDS sensor
is defective, but level electrode senses water
RCM
Swindon Service Centre technician advice: Check that the incoming water pressure is adequate. If
pressure OK, replace the CDS sensor
Service error 13 on my combi oven. The steam generator did not get refilled during steam mode
Rational RCM Catering Equipment Swindon engineer advice: Error 13 is a forced filling error. This error requires the 0-1 signal of the steam generator level electrode to be investigated. Password protected access to the back-office software program is required.
Error 14 on screen. Rational SCC WE. Advice please? The level electrode doesn't recognise the presence of water in the steam tank, therefore the CDS sensor sends too many pulses during the refilling process.
Rational technical advice error 14 service screen: The CDS sensor measured enough pulses when the filling up process took place but the level electrode didn't sense any water. Check water conductivity - this could be low due to poor or incorrect water treatment.
What would cause a service error 17 fault? Rational combi. Error 17 is caused by a conflict with an external memory SD card
Technical advice from Rational engineer Wiltshire based: Essential oven data is missing. Run recovery software - available via RCM Catering Equipment Swindon, Berkshire, Gloucestershire, Avon, Bristol, and Oxfordshire. Tel: 01793 521119
Service error 19.1 Conflict with
external memory SD card
Rational
RCM Catering Equipment Swindon engineer advice: Data cannot be written successfully onto SD card Change SD
card
Thermocouple Defective Service Error 14
Rational steam oven. Please help? Thermocouple defective
RCM
technical advice: This error message
indicates that a thermocouple sensor is defective. Rational ovens have
several thermocouples fitted: Error 20.1=cabinet B1 Error 20.2=control B2 Error
20.4= humidity B4 Error 20.8= steam generator B5 Error 20.12 = B4 + B5)
Our combi oven displays Service Error 21
message. Error 21 is caused by voltage or current monitoring errors on
main control PCB
Rational
service centre director diagnostic verdict: A Rational
trained engineer needs to investigate this fault, but we'd be looking for the
following voltages on the SCC WE 101 or 201 oven main control board: 1 -
18V from T1, 2 - 12V on PCB, 4 - high current MMI, 8 - high current Drain valve
M7, 9 - high current humidity valve Y5
Service 25 No water flow
detected during Clean Jet
RCM
Catering Equipment Service Centre diagnosis: During the CleanJet+Care cycle, the oven cavity fan motor
spins at a constant rate. When Clean Jet water is injected into the oven, an
increase in power demand is called for. Service 25 indicates that the oven
logic board has not detected a demand for more fan motor power. Check clean Jet
water/chemical blend pressure, oven water supply, cavity moistening valve and
nozzle and the CDS sensor. Also ensure that GN racks / trolley are properly
inserted.
Service error 26 on Rational Self Cooking Centre. Drain valve does not find
the open position
RCM Swindon, Berkshire, Wiltshire, Oxfordshire and Avon - technical advice: The oven drain valve is not working properly, possibly caused by a failed microswitch. The drain valve needs to be reset in basic settings. Water, Cleanjet/Care, drain valve
time ration should be 1/4 : 3/4, e.g 9:27 sec or 6:18 sec.
test drain valve in function test
if drain valve not working change the drain valve assembly
Service error 26 on Rational Self Cooking Centre. Drain valve does not find the closed position
RCM Swindon, Berkshire, Wiltshire, Oxfordshire and Avon - technical advice: The oven drain valve is not working properly, possibly caused by a failed microswitch. The drain valve needs to be reset in basic settings. Water, Cleanjet/Care, drain valve time ration should be 1/4 : 3/4, e.g 9:27 sec or 6:18 sec. test drain valve in function test if drain valve not working change the drain valve assembly
Service 28 Thermocouple B5 above
180°C
RCM Catering Equipment Service Centre diagnosis: This is an overheat fault. If the Indication goes off when temperature below 110°C (230°F)
check if the steam element is covered in limescale. If so, a full descale will be required (A job for a factory trained engineer)
Service error 29 on Rational SCC. PCB temperature above
85°C (185°F)
RCM Swindon, Berkshire, Wiltshire, Oxfordshire and Avon - technical advice: Check that the air control panel airflow filter is clean and lint -free, the cooling fan and control panel gasket are OK and that there are no external heat sources likely to cause a significant rise in temperature.
Service error 30 on Rational Self Cooking Centre. Humidity control is not
working properly
Technical advice from RCM service centre: The in-built humidity control device via P1 is not working properly. No humidity control is available above boiling point. Steam is controlled via B2 quenching sensor (bypass control)
Check P1 and B4 in diagnostic mode