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: Ensure the exhaust and intake pipes are clear of obstructions .

Error code on tankless water heaters (common in brands like Rinnai ) typically signals a problem with the exhaust system or fan motor . : Ensure the exhaust and intake pipes are

Mpox is a viral zoonotic disease that can spread from animals to humans and between people through close contact . : Ensure the exhaust and intake pipes are

: The unit has detected insufficient air flow or abnormal fan operation, triggering a safety lockout to prevent carbon monoxide buildup . Common Causes : Clogged vent exhaust (debris, soot, or bird nests) . Faulty fan motor or airflow sensor . Restricted air intake . Troubleshooting : : Ensure the exhaust and intake pipes are