Merrychef eikon
®
e2s service and repair manual
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Error codes & fault finding tips
Please adhere to all best safety practices by Merrychef and ensure the High Voltage circuitry has been successfully discharged
before attempting any works on or around the Merrychef unit while the panels are off. Further information can be found at:
merrycheftechnical.com
If in doubt, please contact your Merrychef/Welbilt technical support team for support.
Note: The error log can be accessed directly during an error condition, without switching the oven off and on, by selecting the
settings icon.
E101:
MAGNETRON
FAILED
(magnetron
failed on
request)
The oven
asked for
microwave
power but the
current draw in
the primary
circuit was less
than 5A on
either or both
magnetrons.
(the ampere
values during
microwave
operation help
determine
where the fault
is located)
Use Visual View in the service mode for analysing/testing the individual magnetrons.
One magnetron at a time.
Zero amps (0A) indicates a fault in the primary circuit (wiring from the SRB board to
the and including the HV Transformer).
A current draw lower than 5A indicates a fault in the secondary circuit (wiring and
components after and including the HV transformer). Isolate the power supply and
test the high voltage components (HV transformer(s), diode(s), capacitor(s),
magnetron(s) and connections) to find the fault for repair.
DO NOT SUSPECT IT’S THE MAGNETRON AT FAULT FIRST
Go to the error logs, is the mains voltage normal at time of fault? (note that the
current draw detailed in the error log is the sum of all magnetrons fitted, test one at
a time)
Voltage too low, below -10% of nominal voltage; There may not be enough voltage
to start the magnetron.
If the above did not resolve the issue, check all the LV connections are tightly fitted,
from the incoming power supply through the Filter, Fuse F2, Door Switches, SRB
board and from the SRB board to the HV transformer(s). The connections on the HV
side from the HV Transformer through the Capacitor(s), HV Diode(s) and
Magnetron(s). Also check the HV Transformer(s) is firmly bolted down (the body of
the transformer forms part of the HV circuit).
There are many connections so each of them is important to be tightly connected
and checked. Most important connection: ‘’the loose one’’ (ensure all connections
are solid and in good working condition).
E102: HEATER
FAILED
(Heater on
without request)
A current draw
>1A detected
on the SRB
when the
heating
element is
switched off.
Typically
happens when
the output
Triac has short
circuited
The heating element is activated even though the controller hasn’t asked for
heating.
Change the SRB board and check carefully all related circuitry including loose wiring
and connections.
Ensure the oven cabinet is clean and there are no leaks from the cavity.
The ambient
temperature
around either
the QTS & SRB
boards is
>70
o
C,
insufficient
cooling of the
components.
Frequently
observed when
the customer
The Air Filter must be cleaned on a daily basis.
Check that the oven is not installed near to a heat source enabling the cooling fan to
draw in hot or grease laden air via the Front Filter.
Check that the Cooling Fan is operating correctly:
Inspect and ensure that the fan is running freely and that the speed is correct. If the
speed is very slow and running freely replace the cooling fan capacitor. The wiring
of the capacitor is sensitive, ensure you connect the wiring like for like, otherwise
the fan may rotate in the opposite direction. The fan should run counter clockwise
(looking down from above) drawing air from the centre of the fan into the component
interior of the oven, creating a positive cabinet air pressure. That’s why the panels
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