Kennmore ultra wave shut off and F-9 message on display
service manual troubleshooting section suggests the F9 code could be
due to line voltage, magnetron, inverter module, "Relay 2", or a loose
connection between door/magnetron/control PCB (Power Control Board).
Other indications might
help narrow down these choices before having to pull out your multimeter
and crack open the microwave case; for example, if the microwave works,
but heats slowly, then the troubleshooting manual narrows your choices
down to magnetron or line voltage problems, and pretty much rules out
the other possiblities.
In other cases, F9 error code indicates an inverter failure. This can sometimes by
caused by a power surge or glitch through the electrical lines. You can
sometimes clear this fault by completely unplugging the microwave for 1
minute. Plug it back in and see if the fault code returns. If it
does, then you have an internal component failure that will need to be
serviced by a technician.
Hope this helps (remember to rate this answer).
Sep 09, 2011 |
Goldstar MV-1515 Microwave Oven