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Tankless Water Heater Flow Sensor Not Working


Tankless Water Heater Flow Sensor Not Working. Check if the flow sensor is working correctly. The problem could be from the fuel source.

Navien Tankless Water Heater Problem & Troubleshooting Sweet Home Advisor
Navien Tankless Water Heater Problem & Troubleshooting Sweet Home Advisor from sweethomeadvisor.com

After removing the filter, drain the remaining water in the unit. The problem could be from the fuel source. It might be the problem of partial power restoration.

First, Check The Breaker Box To Be Sure A Fuse Has Not Blown.


In fact, the problem may not even be the water heater. The only time the manual talks about this part are when the faucet is turned on but the heater does not work. For that matter, you have to do a circuit test by using a circuit.

Most Older Water Heaters Have A Minimum Flow Rate Of 1/2 To 3/4 Gpm.


The burner will not ignite on too slow flow. However, for other models, you might need to take additional measures if the reset switch has tripped. If the flow is too low, the burner will not ignite.

If A Power Outage Is A Common Problem You Are Facing, You Have To Check The Power Supply Of The Tankless Water Heater.


Water heater is not turning on. Common tankless water heater problems. If you are not getting hot water from your navien tankless water heater, the flow sensor may not be working correctly.

Faulty Temperature Sensor On The Outgoing Water Line.


Low pressure is one of the most frequent tankless water heater problems and is easy to fix. Replace it with a new one if necessary. The leading causes of the intermittent flame;

Hard Water (In Contrast With Soft Water) Is Water With A High Mineral Content, And The Harder Your Water, The Higher The Potential For Damaging Mineral Buildup.


For some models, resetting your heater might be as simple as pressing the electric reset button. • minimum pressure is needed for flow switch opening. Also known as the “c old water sandwich,” this dilemma is one of the most common tankless water heater problems.


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