Tankless Water Heater Flow Sensor Not Working

Flow sensors are also used in tankless water heaters.

Tankless water heater flow sensor not working.

It might be broken. A broken flow sensor can malfunction the entire unit. 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. A highly comprehensive step by step video on how a tankless water heater operates and how to identify the cause of a tankless water heater no hot water fl.

How to test 3 wire flow sensors on boilers etc shown on a vaillant turbomax plus. The flow sensor can also help in regulating the flow of water in specific models of tankless water heaters which allow water flow control. Depending on your tankless water heater s capacity too many simultaneous hot water applications such as multiple showers running can overload your water heater. If your tankless water heater has stopped working chances are that the entire problem could just be a minor fault in the flow sensor.

To support this content and. Clean or replace the filter and then check the flow again. If there is a low flow from the heater the first thing to check would be the input filter. If you have an older tankless water heater 10 years old the problem is most likely that the minimum flow rate is too high.

If you are new then use a filter inside of the water flow pipe for stopping the problem from the beginning. 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. The pressure pump creates pressure for the shower when water. Replace it if required.

In europe and other regions pressure pump showers with flow sensor based utility metering technology are widely used. Water flow temperature fluctuation problems. 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. Your water heater may struggle to supply the hot water needed or shut down altogether if it becomes overloaded.

Water temperature is set too low. If the temperature sensor is broken or it is not correctly positioned try to either re position it so it is firmly attached to the pipe or replace it with a new one. Check out the output temperature sensor. Water is not hot enough.

Turn off the cold supply relieve the hot pressure and remove the filter to check for debris.