Stiebel Eltron 286461 Flow Sensor for Tempra B, Tempra Plus, and Tempra Trend is a replacement flow sensor used on designated Stiebel Eltron electric tankless water heaters to monitor water flow and signal the control electronics for proper heating operation.
Key Features:
- OEM Stiebel Eltron flow sensor assembly for Tempra B, Tempra Plus, and Tempra Trend models
- Measures water flow rate and provides input to the electronic control board for staged or modulated heating
- Factory-configured sensor body and electrical connection for direct replacement on compatible units
- Designed for use in closed, pressurized potable water systems
Compatibility & Applications:
- Intended for use with Stiebel Eltron Tempra B, Tempra Plus, and Tempra Trend series electric tankless water heaters that list part 286461 in the parts documentation
- Used when the water heater shows flow-related error codes, fails to recognize demand, or does not modulate properly due to sensor failure
- Suitable for residential and light commercial installations that rely on these Tempra models for continuous hot water
Installation & Operation Notes:
- Turn off electrical power at the breaker and close water supply valves to the heater before servicing
- Follow Stiebel Eltron service instructions for opening the unit, relieving pressure, and accessing the flow sensor assembly
- Remove the existing flow sensor, then install the new sensor in the same orientation, reconnecting wiring and seals as shown in the manufacturer's diagrams
- Restore water supply, check for leaks, then restore power and run hot water to confirm correct flow detection and heating response
- Observe the display or indicator lights to verify normal operation and absence of new error codes
Maintenance & Troubleshooting:
- Inspect the flow sensor if symptoms such as no hot water, fluctuating outlet temperature, or intermittent operation occur despite adequate flow and power
- Replace the sensor if there is visible scale, damage, or if diagnostic procedures indicate sensor malfunction
- If problems continue after replacement, check inlet filters, strainers, flow restrictors, and verify that minimum flow requirements and electrical supply conditions are met