Tankless Water Heater Flow Sensor Not Working

Clean or replace the filter and then check the flow again.

Tankless water heater flow sensor not working.

Rinnai tankless gas water heaters need a demand of at least 0 4 to 0 6 gallons per minute of water flow through the hot side to ignite and 0 26 gallons per minute to stay in operation. Flow sensors are also used in tankless water heaters. If you are new then use a filter inside of the water flow pipe for stopping the problem from the beginning. Flow sensor one of the major problems common to navien tankless water heaters is a quick erosion of the flow sensor.

If not check this article that deals with the ignition failure problem. If the flow rate falls below these levels the energy efficient rinnai unit will turn off because it senses that hot water isn t needed. Basically this technology helps to test on the gas valve a dual btu valve of your water heater. Turn off the cold supply relieve the hot pressure and remove the filter to check for debris.

If you have an older tankless water heater 10 years old the problem is most likely that the minimum flow rate is too high. Your water heater may struggle to supply the hot water needed or shut down altogether if it becomes overloaded. Make sure that the shut off valve is not closed. To solve the issue first check the device plug related problem properly if it does not work then changing control board will be a better solution.

A flow sensor performs the same function but provides the added benefit of measuring the rate of water flow. You see every tankless water heater has a minimum flow rate which is the minimum amount of water measured in gallons that the tankless unit needs flowing through it every minute gpm to produce hot water. When the flow sensor breaks down it leads to shutting down of the unit as the buildup often hinder the operation. The pressure pump creates pressure for the shower when water.

The first things you should check are the correct supply of electricity water and gas to the water heater. This is not a problem of the girard tankless water heater. I recommend that you should utilize the high low sensor when the wci pressure has incorrectly read inches of the water column though you have set the mode switch. Check the gas burner and does the flame rod generate sparks when the unit is turned on.

In europe and other regions pressure pump showers with flow sensor based utility metering technology are widely used. Water flow temperature fluctuation problems.