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Q: There are humming and clicking noises
from my oven when I cook by
COMBINATION. What is causing these
noises?
Questions and Answers
Q: Why won’t my oven turn on?
A: When the oven does not turn on, check the following:
1. Is the oven plugged in securely? Remove the plug from the outlet, wait 10
seconds and reinsert.
2. Check the circuit breaker and the fuse. Reset the circuit breaker or replace
the fuse if it is tripped or blown.
3. If the circuit breaker or fuse is all right, plug another appliance into the outlet.
If the other appliance works, there probably is a problem with the oven. If the
other appliance does not work, there probably is a problem with the outlet.
If it seems that there is a problem with the oven, contact an authorized
Service Center.
A: Some radio and TV interference might occur when you cook with the microwave
oven. This interference is similar to the interference caused by small appliances
such as mixers, vacuums, blow dryers, etc. It does not indicate a problem with
your oven.
A: The oven is designed not to accept an incorrect program. For example, the oven
will only accept one stage cooking (excluding Delay Start), and will not accept an
Auto Weight Program after Delay Start.
A: The heat given off from the cooking food warms the air in the oven cavity. This
warmed air is carried out of the oven by the air flow pattern in the oven. There
are no microwaves in the air. The oven vents should never be blocked during
cooking.
A: The oven has programmed DEMO MODE. This mode is designed for retail store
display.
Deactivate this mode by pressing Clock Button four times.
A: Only when you are using GRILL cooking mode (NN-F663/NN-F623/NN-F653).
The metal in some thermometers may cause arcing in your oven and should not
be used on MICROWAVE and COMBINATION cooking modes.
A: The noises occur as the oven automatically switches from MICROWAVE power to
GRILL to create the combination setting. This is normal.
A: After repeated use, it is recommended to clean the oven and then run the oven
without food, glass tray, and roller ring on Grill for 5 minutes. This will burn off any
food, residue or oil which may cause an odour and/or smoking.
Q: My microwave oven causes interference
with my TV. Is this normal?
Q: The oven won’t accept my program.
Why?
Q: Sometimes warm air comes from the oven
vents. Why?
Q: “D” appears in the display and the oven
does not cook. Why?
Q: Can I use a conventional oven
thermometer in the oven?
Q: My oven has an odour and generates
smoke when using the COMBINATION
and GRILL function. Why?
(NN-F663/NN-F623/NN-F653)
