Error code 01 indicates a water flow sensor problem the sensor could be dirty or faulty also check the screen on the cold connection to the heater the heater may also be clogged with rust or scale and may be causing a low flow problem.cleaning the unit shuld fix this problem. Hope this helps
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Error code 01 indicates a water flow sensor problem the sensor could be dirty or faulty also check the screen on the cold connection to the heater the heater may also be clogged with rust or scale and may be causing a low flow problem.cleaning the unit shuld fix this problem. Hope this helps