F3 errors can indicate a mag problem. Check your fuses first, it can also be a door switch. If your fuses are good, you need to inspect the 2 magnetrons. If you have a burned tip on one the waveguide and waveguide cover will need to be replaced. I usually replace the entire system at a cost to the customer of $1500.00
This oven has 2 mags in it this error codes explains that one of these are failing.
F3: Magnetron Current Low
Fault is displayed when the current transformer
(CT) on the I/O control board does not detect
enough current. The fault is monitored when the
microwave is on during a cook cycle or self-test.
The fault is cleared from the display at the onset of
a cook cycle if the CT detects current or when the
magnetron is successfully energized in Test Mode
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well i found the solution, thanks for the contributions.
thanks guru. yes i found that.
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