Manitowoc Merrychef eikon e2s, Service And Repair Manual

Page: 94 / 193

9 Diagnostics
eikon e2s Service and Repair Manual UL 94
4. Open the oven door.
Check the colour of the door symbol changes from green to red
on the display to check the door microswitch / interlock circuit is
operating.
Place door spacers onto the oven door (refer to "Adjusting the
door microswitches / interlocks" in the “Replacing components”
section for details), close the door and check the colour of the
door symbol on the display.
Green colour indicates that the door interlock adjustment is ok.
Red colour indicates that the door interlock adjustment procedure
must be completed.
5.
Select the cooling fan and check if it is operating correctly.
When increasing the fan power from L (low) to H (high) the fan
noise should become louder.
6. Place a microwave safe container of water into the cavity, and
close the oven door.
Select a magnetron to test the current draw at maximum output,
this will time-out after 30 seconds.
Dual magnetron model (2000W e2s variant):
Test the magnetrons individually and together.
Using heat proof gloves, remove the container and close the oven
door.
Individual magnetron test:
If there is a magnetron error present, then first reset the error.
If during the magnetron test the current is between 1.1 - 2.2 A and
the error re-occurs after 8 seconds then the failure can be found
in the 230V circuit.
Refer to the schematics to find the fault for repair (fuses, SRB,
door switches, connections, power supply).
If during the magnetron test 0 A and the error reoccurs after 8
seconds then the failure can be found in the high voltage circuit.
Replace high voltage components (diode/rectifier, capacitor or
magnetron) to find out the failing component. Never measure in
the high voltage circuit. See "Replacing components" section of
this manual.