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 functional. However, if the LED fails to illuminate when hot water is running, it’s a clear sign that the flow sensor needs replacement. Don’t worry, we’ve got you covered.

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Troubleshooting | Installation

Not sure your flow sensor is the problem? Flow Sensor Troubleshooting Link

Troubleshooting Tip | The link above is for a different model unit but the troubleshooting steps to verify if the flow sensor is functioning still remain the same. With flowing water if the LED display is not on and staying on while water is running is a clear indication that the flow sensor must be replaced.

Part Numbers Included

Eemax & Rheem | HA-P021

Ecosmart | FSA NFSML

Compatible With

Eemax HomeAdvantage HA008240, HA013240
Eemax EEM24008, EEM24013
Ecosmart Eco8Kw, Eco11Kw, EcoBOOST
Rheem RTEX-08, RTEX-13
Rheem RETEX-08, RETEX-13
Richmond RMTEX-08, RMTEX-13

Shipping Details

We strive to dispatch all parts on the same day, but orders placed after 3pm EST may not be guaranteed for same-day shipping. For assurance on orders after 3pm EST, please consult with a representative.