Turn the water supply on slowly again to about 1 4 way open.
Cleaning filter on tankless water heater.
Unscrew the water filters and rinse them before putting them back into place.
Locate the shutoff valves.
Using the adjustable wrench unscrew the braided stainless steel hose from the cold side connection and remove the filter screen using the needle nose pliers.
Add an adapter to the inlet side.
You should visit the heater at least once every three months.
The same you d buy at any grocery store.
5 steps to cleaning your rinnai tankless water heater filter learn best practices on cleaning your filter from our youtube video learn more.
With the water running out of the hoses turn the valve off on both hoses to stop the flow of water and preventing air from getting into the water heater.
Turn the cold water off and remove the filter screen again and clean it under running water.
Add teflon to a threaded fitting and tighten this into the adapter with a pipe wrench and pliers.
You should notice that there are color coded handles underneath your.
How to flush a tankless water heater and clean the air intake filter step 1.
E407 e421 and e432 issues.
Reinstall the filter screen.
Cut through the cold water pipes using a hacksaw and clean the edges with emery cloth.
Know that a tankless water is not a set it and forget it water heater.
The rinnai is typical.
Empty the vinegar and place the bucket under the water heater.
Remove the hose from the cold water side and screw the cap back in place.
Wrap the outlet fitting s threads with teflon tape and tighten it to the outlet side of the filter.
I decided to purchase mine through amazon.
Close the cold and hot water ball valves on the unit.
Open the water valve and let 4 to 5 gallons of water flow through the system.
The solution is the same as for issue e012 that you should clean the air intake filter.