21
6. Troubleshooting
Buttons of the control panel do not work.
Food is not heated even though an oven works.
Are
buttons pressed
in the correct
order?
Is the
connector of the
control panel
normal?
Is the latch
switch operating
normally?
*Inspection method
Refer to User Manual
Button
Switch
(Tact Switch)
Connector
Membrane
Switch
Connector
Door Key
Securing
nuts
*Door open
*Door closed
1. Loosenly tighten the nuts
to check whether the
primary interlock switch
works by slightly moving
latches to right and left.
Then firmly tighten nuts.
2. Check whether the
secondary interlock
switch and door sensing
switch work by slightly
moving latches to right
and left, then firmly
tighten nuts.
Tact Type
Membrane Type
Method to control latch switch
Replace PCB.
Checking high voltage circuits
Refer to "Checking high voltage circuits"
on the previous page.
NO
NO
NO
YES
YES
YES
