Welbilt MERRYCHEF conneX Service & Repair Manual page 48

5 Service information
Merrychef conneX ® service and repair manual
7. Place a microwave safe container of water into the cavity
and close the oven door.
Select a magnetron to test operation and display the current
draw at maximum output. This will time-out after 30 seconds
(the cooling fan will automatically run during the test).
Individual magnetron test:
If during the magnetron test the displayed current is 0 A and
the E101 error occurs, then the failure can be found in the
230V circuit. Refer to the schematics to find the fault for repair
(IO Board, connections, HV primary winding).
If during the magnetron test a low current draw is seen
(around 3A) and the E101 error occurs, then the failure can be
found in the high voltage circuit. Isolate the power supply and
test the high voltage components (HV transformer, diode,
capacitor, magnetron and connections) to find the fault for
repair. Never measure the high voltage circuit live. See
"Replacing components" within section 6 of this manual.
Dual magnetron models:
Test the magnetrons individually and together.
Selecting the magnetrons again at any point will turn them
off.
Using heat proof gloves, remove the container and close the
oven door.
Note: The operating magnetron(s) will be displayed green.
8. Select the heater. The heating element runs for 5 minutes.
Selecting the heater again will turn it off. The convection fan
automatically runs by default (the fan speed can be manually
altered up to 100%).
Check the cavity temperatures are correct. Both displayed
temperatures (thermocouple reading & calculated cavity
temperature) should be similar.
9. Further diagnostic information can be found below the
oven picture;
Mains supply Voltage & Frequency.

The IO voltage selection for the HV transformer.

The selection is highlighted in blue.
The ambient air temperature around the IO & UI

boards.
Information at the top of the screen indicates;
Demo mode (if selected)

Mode of operation

Cooking programs (changes) locked or unlocked

Wifi connectivity (displayed

connect)
Current time

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