Yes, running a sump pump continuously for extended periods is detrimental to the motor. While continuous operation for a few hours during an intense storm or severe spring snowmelt is normal, a pump running nonstop for days indicates a mechanical malfunction such as a stuck float switch or a failed check valve. Running continuously without a break will rapidly overheat the motor, wear out internal bearings, and lead to complete pump burnout. Verification: Check if water is actually being pumped out or if the pump is trapped cycling on a stuck switch.
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