42 TROUBLESHOOTING
Troubleshooting:
F4: MONITOR (Door Monitor Defective)
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| Replace the F3 or F4 | ||
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| Is the F3 or F4 fuse blown? |
| YES |
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| NO |
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| fuse (see page | |||||||||||||||
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| through | ||
Are the switches open- |
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ing in the correct |
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sequence (P, S, M)? To |
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| Readjust the monitor safety switch. |
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access TEST MODE or for |
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| See page 26 for instructions. |
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info on status indicators, |
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| NO |
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| Disconnect oven from power supply |
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see page 15. |
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| and then reconnect. The fault |
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| should clear. |
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| YES |
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| Disconnect oven from |
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| NO |
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Are the switches |
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| power supply and then |
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closing in the |
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| reconnect. The fault |
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correct sequence |
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| should clear. |
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(M, S, P)? |
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Troubleshooting:
F5: MAG TEMP (Magnetron Over Temperature)
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| Verify wiring. If neces- |
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| sary, replace the cooling |
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| Open the top cover, place the oven in |
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| fans (see pages |
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| NO |
| TEST MODE and test the magnetrons |
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| through |
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| (see page 15). Are the magnetron |
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| cooling fans operating? |
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Verify wiring to |
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magnetrons, and verify |
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| Do the magnetrons pass testing in the |
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| NO |
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magnetron thermostats are |
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| TEST MODE? See page 15. |
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not open. Are wiring and |
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thermostats ok? |
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| YES |
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| Fault message |
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| NO |
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| should disappear. |
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Correct wiring/ |
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| Replace the magnetron(s) (page |
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replace the thermo- |
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| YES |
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| through |
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stats (pages |
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through |
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| MODE. Do the magnetrons pass testing? |
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| Is the airpath into the electri- | ||
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| cal compartment blocked or | ||
YES |
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| clogged with debris? Check | |||
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| the cooling fan finger guards | ||
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| and filter on the back panel. | ||
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NO |
| YES | ||
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| Remove the debris | |
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| or reposition the | |
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| oven away from | |
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YES |
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| Replace the control board |
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| NO |
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| (pages | |||
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