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Todd FieldsAug 21, 2025
What to do if warning lights 1, 2, 3, 4, and 7 are permanently lit on my Effer Industrial Equipment?
- KKelly MooreAug 21, 2025
If warning lights 1, 2, 3, 4, and 7 are permanently lit without an acoustic alarm, it indicates a short circuit between the DMU and a solenoid valve on the crane (HSS, main discharge, first boom discharge, etc.). Restore the solenoid valve's electrical connections. If the problem persists, the DMU central unit may need replacement.
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