HA-P021 | RTE10651 Troubleshooting | Functionality
Flow Sensor Assembly HA-P021. This sensor is crucial as it detects water flow, triggering the unit to activate. Unsure if your flow sensor is the culprit? Here's a quick check: If the unit's LED lights up when you adjust the knob, it means your control board and power supply are function
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Quick delivery and it worked!
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Jim · July 11, 2026
Customer service and guidance over the phone with your staff was excellent. They updated me with information and the process went smooth with the product.