If you are trying to flush your water heater and there is no solution going through the pump press the power button on the unit and wait for the unit to power down. After doing so unplug the unit and follow the instructions. The unit in the video was already powered off before he unplugged the one being serviced so it was not mentioned that this is an important step.
Most important comment is the tip to hit the “power” button before you unplug. The video missed it and that was my issue. Prior no water through hot water line. This fixed that
@rinnaivideos - I have the model RUR199iN version. It is about 2 years old. Lately we are seeing an issue where after starting recirculation, water goes cold after 10-15 minutes of shower use. Again restarting recirculation doesn’t help either. Do you think flushing the rinnai heater would potentially solve this issue?
I have a Rinnai M/N REU-N3237FF that was installed in Feb 2020. I followed the instructions in Sep 2022 and flushed my system accordingly. Today is Oct 2023 and currently doing another flush, this time around noticed corrosion around a pipe the connects hot water and possibly cold cold water. My water looks crystal clear after running the system for an hour. Wish I could include a picture but I don’t have the option. Any suggestions?
@JoseRamirez-lw8bt 0 seconds ago i have a Rannai water heater RE140E no recirculation pipe I know i need a recirculation pump and a crossover valve would you please recommend a pump and where should i install it
It may not be easy to see in the video, but the condensation lines are drained through a neutralizer BEFORE it enters the copper shown in the video. The pH of the drainage should be ok.
I've had a Rinnai for over 10 years, it operates flawlessly. The manual states that no periodic maintenance is required, and if a flush is necessary, the unit will say so via the control panel. What happened to that? Sounds like the tech has gone backwards. Mine has never asked for a flush.
If you are trying to flush your water heater and there is no solution going through the pump press the power button on the unit and wait for the unit to power down. After doing so unplug the unit and follow the instructions. The unit in the video was already powered off before he unplugged the one being serviced so it was not mentioned that this is an important step.
when I went to flush the unit Im not getting any water coming through the hot side at all. I have a fully submerable pump that I just bought so it can;t be the pump. What do I need to do to get the water to flow ?
If you are trying to flush your water heater and there is no solution going through the pump press the power button on the unit and wait for the unit to power down. After doing so unplug the unit and follow the instructions. The unit in the video was already powered off before he unplugged the one being serviced so it was not mentioned that this is an important step.
Try priming the pump by lifting it up and down while it is submerged in your solution,. I often have the issue with my pump being on but not pumping at first. It may just be air in the pump at first.
I followed the instructions in this video to flush my Rinnai tankless water heater after getting the code “LC” Initially when the pump started, the solution in the bucket turned chalky colored. After letting it flush for an hour, I went to turn everything off and the solution was clear! What happened there? I am also now unable to turn the cold water valve back on- it was moving fine when I shut it off, but now it won’t open again. Please help!
He didn’t say you needed NSF approved white vinegar. His suggestion to find NSF approval was if you were using a chemical flushing agent besides vinegar. All regular household white vinegar is approved for human consumption.
