Samsung NZ64F3NM1AB Service Manual page 26

4-3 Electrical Malfunction
Use the proper pot (refer to
the instruction manual).
Use the proper pot (refer to
the instruction manual).
Heating stops suddenly during operation and display "U"
Yes
Check if the pot type is
wrong.
Yes
Check if the pot diameter is
too small.
No
Push "ON/OFF" button to restart
unit, does the symptom continue?
The pot detection circuit is damaged,
replace the Power board.
Perform the operation again and check if
it is working properly.
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No
No
: Unit is overheated. Wait for
temperature to return to normal.
Yes