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.
Cleaning filter on tankless water heater.
Open the water valve and let 4 to 5 gallons of water flow through the system.
Turn the water supply on slowly again to about 1 4 way open.
Remove the hose from the cold water side and screw the cap back in place.
Empty the vinegar and place the bucket under the water heater.
Reinstall the filter screen.
5 steps to cleaning your rinnai tankless water heater filter learn best practices on cleaning your filter from our youtube video learn more.
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.
You should visit the heater at least once every three months.
The solution is the same as for issue e012 that you should clean the air intake filter.
Wrap the outlet fitting s threads with teflon tape and tighten it to the outlet side of the filter.
You should notice that there are color coded handles underneath your.
Know that a tankless water is not a set it and forget it water heater.
Cut through the cold water pipes using a hacksaw and clean the edges with emery cloth.
Unscrew the water filters and rinse them before putting them back into place.
The rinnai is typical.
How to flush a tankless water heater and clean the air intake filter step 1.
Add teflon to a threaded fitting and tighten this into the adapter with a pipe wrench and pliers.
Close the cold and hot water ball valves on the unit.
E407 e421 and e432 issues.
The same you d buy at any grocery store.
Navien tankless water heater problems are sometimes hard to comprehend not to mention fix the heater on your own.
Turn the cold water off and remove the filter screen again and clean it under running water.
Locate the shutoff valves.
These are short circuited problems which are the real serious ones that you should call for tech support.