7 TROUBLESHOOTING GUIDE
7.1. Troubleshooting of inverter circuit (U) and magnetron
This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H95, H97, H98 and H99
are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H95,
H97, H98 and H99. First, you must program the DPC into TEST MODE, press Clock button once
→
press Timer button once
→
Press Start button once
→
press Power Level button once. Program unit for operation. H95, H97, H98, H99 appears in
display window a short time after [Start] button is pressed and there is no microwave oscillation.
Alternate way to troubleshoot oven with AC Ampere meter used
H95, H97, H98, H99 appears in display window a short time after [Start] button is pressed and no microwave oscillation with AC
Ampere meter used for troubleshooting.
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NN-SD291S / NN-SD291W
Summary of Contents for NN-SD291S
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Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SD291S NN SD291W ...
Page 17: ...8 EXPLODED VIEW AND PARTS LIST 8 1 EXPLODED VIEW 17 NN SD291S NN SD291W ...
Page 24: ...9 DIGITAL PROGRAMMER CIRCUIT 9 1 SCHEMATIC DIAGRAM 24 NN SD291S NN SD291W ...
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