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SUB–123P SERVICE AND REPAIR MANUAL
Oven Problems
The oven doesn't heat up..........................................................................................................................................
Is there an asterisk next to the oven temperature on the display?
Yes – Is the contactor engaged?
No – Is the actual oven temperature on the display higher than the set-point?
The oven motor doesn't rotate ....................................................................................................................................
Is there a plus sign next to the oven temperature on the display?
Yes – Check oven door switch
No – Is the oven motor wired correctly?
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NU-VU
FOOD SERVICE SYSTEMS
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Troubleshooting Guide
Yes – Is the oven fan rotating?
Yes – Check oven elements.
Oven elements OK – Replace contactor
Oven elements not OK – Replace oven element(s)
No – Is the motor wired correctly?
Yes – Replace oven motor assembly
No – Correct wiring problem
No – Check Hi-Limit switch.
Hi-Limit switch OK – Replace contactor
Hi-Limit switch not OK – Replace Hi-Limit switch
Yes – Replace oven temperature sensor
No – Is there a plus sign next to the oven temperature on the display?
Yes – Check oven door switch
Yes – Replace oven motor assembly
No – Correct wiring problem
Sales Fax (906) 863-5889 ♦ Service Fax (906) 863-6322
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TROUBLESHOOTING GUIDE
MENOMINEE, MICHIGAN 49858-0035
(800) 338-9886
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