What observed timing/control state, affected heater/room pattern, odor, noise, or visible condition can the resident report without touching or changing the equipment?
What to report without touching the heater
From where you already are, note the control’s existing marked position or visible display, when you noticed the heat continuing, whether one or several heaters or rooms are affected, and any odor, unusual sound, or visible damage already noticed. Do not approach, touch, open, test, adjust, reset, clean, or operate a breaker or disconnect to investigate. Do not treat a control marked LOW as OFF unless the exact documentation for that heater says it is an OFF position.
An OFF marking is not permission to open or work on the heater. King’s guide separately warns that power must be isolated before maintenance. Leave that work to appropriately qualified service; this article provides no isolation procedure.
The CPSC checklist discusses outlets or switches that operate improperly or feel unusually warm as electrical safety concerns. These are outlet and switch examples, not a diagnosis or design rule for a fixed baseboard heater.
The heater’s model, control arrangement, condition, property responsibility, and local service rules remain unknown. Share only existing observations and any already-visible model information with an appropriately qualified electrical service professional, who can determine the inspection and service scope. Which trade, license, or responsible party applies depends on the exact equipment and location; this answer does not determine that for your home.
Sources: King Electrical Mfg. Co., CB Series Baseboard Heater Installation Guide, pp. 1, 4 (maintenance warning and model-specific thermostat FAQ); U.S. Consumer Product Safety Commission staff, Home Electrical Safety Checklist (July 2008), outlet/switch examples; U.S. Fire Administration, Choosing and Using Fire Extinguishers (reviewed April 1, 2023), fire escalation guidance.