The Eccotemp L5 Upper Left Thermocouple is a safety component positioned near the pilot light of the portable water heater, dedicated to sensing the flame's presence. It serves a critical role in maintaining the portable water heater's safe operation by continuously monitoring the pilot light. When functioning correctly, the thermocouple sends a signal to keep the gas valve open, allowing the water heater to remain operational. In the event the pilot light extinguishes, the thermocouple detects the absence of the flame and triggers the gas valve to close, preventing potential gas leaks.

Identifying issues with a thermocouple might involve:

Pilot Light Extinction: If the pilot light frequently goes out despite attempts to relight it, it could indicate a malfunctioning thermocouple.

Inability to Stay Lit: If the pilot light doesn't stay on or struggles to remain lit, the thermocouple might be faulty.

Gas Supply Interruption: A malfunctioning thermocouple can cause the gas supply to shut off, resulting in an inability to heat water.

Diagnosing problems with the thermocouple involves checking the pilot light's behavior and ensuring its proper positioning and connection to the gas valve. If concerns persist, professional evaluation or contacting the manufacturer's support team might be necessary for accurate diagnosis and potential replacement.

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