Unit displays Code 41 and will not start
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn OFF power and close the cold and hot water isolation valves. Relieve pressure by opening a hot water tap before removing any water connections.
Steps to check:
- Clean inlet filter: Remove and clean the cold water inlet filter screen to remove debris that may affect the flow sensor.
- Inspect flow sensor: The flow sensor is usually located on the cold water inlet side. Remove it carefully and check for scale or debris obstructing the turbine. Rinse gently with clean water.
- Check wiring: Ensure the flow sensor connector is secure at the sensor and control board.
- Reassemble and test: Reinstall the flow sensor, open valves, check for leaks, restore power, and test operation.
When to call a professional: If Code 41 persists, the flow sensor may need replacement or the control board may be faulty.