Question about Bosch & Tankless LP Hot Water Heater

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5yr. old aquastar 125x lp wont stay lit after about 5min. use. just started happening out of the blue... a clicking noise preceeds the flame shutting off. any ideas?

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The gas valve makes a single click sound when the pilostat shuts off. That is a safety holding coil for units with standing pilot lights and closes if it thinks the pilot went out. In electronic ignition, the same holds true except the sensor is electronic.

Posted on Mar 31, 2011

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