Hi All,
I have a Navien NR-240A-NG installed by previous owner in 2013. We recently had issues with the water going from hot to luke-warm within a minute of turning it on.
Replacing the internal check valve near the pump fixed the issue, and for the past ~2 weeks all has been fine.
Last 2 days however, we've heard a knocking / rattling sound from upstairs and tracked it down to the water heater. The sound is coming from the pump area I worked on when replacing the check valve. Also, occasionally the hot water issue from before has returned.
Has anyone heard a sound like this before? Unsure if the pump is dying and it is coincidence, or if I need to dismantle and look at the check valve again...
Here's a link to a video with the sound in it.
Thank you!
I have a Navien NR-240A-NG installed by previous owner in 2013. We recently had issues with the water going from hot to luke-warm within a minute of turning it on.
Replacing the internal check valve near the pump fixed the issue, and for the past ~2 weeks all has been fine.
Last 2 days however, we've heard a knocking / rattling sound from upstairs and tracked it down to the water heater. The sound is coming from the pump area I worked on when replacing the check valve. Also, occasionally the hot water issue from before has returned.
Has anyone heard a sound like this before? Unsure if the pump is dying and it is coincidence, or if I need to dismantle and look at the check valve again...
Here's a link to a video with the sound in it.
Thank you!
