Yes, like any piece of electronic hardware, an Ecobee thermostat can eventually fail due to internal component wear, power surges, electrical lightning strikes, or persistent low-voltage wiring faults. Symptoms of a failing unit include permanent touchscreen failure, repeated unprovoked reboots, loss of Wi-Fi module capability, or failure to properly trigger relay switches for heating and cooling stages. Verification: Test voltage levels at the baseplate with a multimeter to rule out external wiring issues.
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