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Great video! After fixing the problem I saw Rinnai sells a protective cage that goes around the “squirrel fan” so may not have this problem happen again. Another issue I’ve had since buying the system is it takes forever for hot water to get upstairs, not as on demand as I hoped. Anyone else have this issue or know how to fix it??

Do you need to kill power to the rinnai before doing this?

Same issue. I cleaned the fan several times, always fixed it for a couple months. Now, clean fan and error 10 is thrown every shower. I'm thinking the heat exchanger needs to be exposed and cleaned. Removing it looks like it involves breaking seals between the pieces. :(

easy fix thanks for the help!

Thanks for posting this. Fixed our issue, and we didn't have to call a repair guy and spend MORE money.

I had an issue where my hot water was randomly cutting out after several minutes. Followed this video, cleaned the all of the bug guts and other crap out of the fan blades - everything seems to be working well again. Also hooked my shop vac up to the air line when the fan was out and sucked/blew for a few secs each in case any loose junk was way up inside. Simple, easy to follow video.

Thanks thanks 1 million thanks, helping sooooo much ❤

Thanks a million sir, my tankless heater work really good,appreciate very much 👍🏼

Thank you again! I rewatch your video every time I need to do this! 😊 It's very helpful and clear!

Sorted my Code 10 about this time last year with your great video. This year we had a Code 12 but with some of the same symptoms (temperature fluctuations) of the Code 10 last year, so I pulled up your trusty video and cleaned the filter again and the Code 12 mysteriously disappeared. Guess this needs to turn into a quarterly affair, although strangely the amount of dust and debris in ours was so minor you would never eyeball it and call it a problem. Really finnicky these Rinnai heaters...

I have saved this video as one of my favorites. Ran into the code 10 issue twice in the 5 years. I followed the exact steps listed in this video, to clean the fan motor and put it back, and this did the trick. Great job putting this video and thanks for helping others.

BAD NEWS: My plumber just lost 500$

Did a fix over the phone to a cousin. He eventually got code 10. LOL, they got their place painted today so the vent was taped shut.

Thanks for the FIX!! ... Has anyone come up with a way to keep insects getting sucked down into the exhaust/air intake?

YOU THE MAN !!! My family and I thank you so much for posting this video. My RL94 has been randomly cutting the hot water for 6 months or more. This procedure took me about 10 minutes and completely fixed the issue.

TLDR: [Code 10] My vent line was almost completely full of condensed water, so I opened the drain line that's capped, drained all the water, & the unit works fine again. Hey guys, had an Error 10 on my unit just yesterday (Model# RSC199iN - Rinnai Tankless "indoor" unit, installed inside my garage). I looked all over the internet & came across a plethora of possible causes & fixes; including this video. My unit is less than a yr old & I don't have problems with insects getting into places they don't belong, nor does the system share a vent/intake with my furnace. That said, I called my installer & he told me a possible cause was too low of gas psi entering the unit, which made sense due to the fact that here in the PNW we had a freak winter storm producing balmy temps of about 8. Because of the cold temps & my neighborhood is ran off nat. gas, the high demand could've dropped the supply psi to a point where ignition couldn't be achieved. I tested that by shutting down my running furnace & nat. gas fireplace - no luck. I noticed that when the unit attempted to fire, there was a bubbling sound within a black plastic manifold, that connects to the outer vent PVC (like if you were to blow in a straw in a glass of liquid). Since I wasn't present on 1st install/setup, I had no idea if this was normal or not, but I fixated on that noise. Though the unit has a drip/condensate line already, I noticed on the bottom of the unit, across from the already in-place drip line, _there's another capped line that has a stamped/extruded "DRAIN" on it. I opened it up, & a *ton of water came out. Restarted the unit & it's working perfectly again._ My installer said it's the 1st he's ever heard of such, & no write-up/video I came across mentioned trying that either. So if you hear percolating water in your unit on startup, try the drain line. Be sure to put a pale under it, as there was quite a bit of liquid in there. That caused the fan to run extremely hard to try to vent through that much water, & luckily the safety mechanisms of the unit caught the issue & shut it down before frying my fan. Hope this helps!

Great performance by the AUMB! 🙂 I just wish ESPN had telecast it in its entirety. It would've provided some consolation for Maryland walking away with the win. But, at least it wasn't a total mismatch like UGA's victory in the Sugar Bowl! Ah, well. Better luck next year, Tigers. Happy New Year, too, and...WAR EAGLE!

should we add a filter to the intake ?

Very helpful, thanks!

Install screen around the outside wall intake it makes a big difference in debris infiltration..

If you look at the area above the wires you unplugged, you will see Y for yellow, R for red, and I do believe BL for blue. It's printed on the silver plate above them. They give you cheats for putting wires back. Good video. You can also get the Code 10 for build-up in the vent itself. It's good to remove and check that.

I paid a lot of service techs a lot of money to fail to figure this out. Thank you for this video... this took me 20 minutes and it no longer error 11's

great video. Professionals from the Gas Company have been out 3 times and have not solved my problem with the exact same symptoms. I will try this over the weekend and hope to have the same success.

it poo’d on my head. still cool

Ausome Performance! God Bless our Military all over the world home and abroad! Warrr Eagle!!

lol a bunch of these have been in terrible accidents

Do you prefer Waymo or Uber?

Good job! Saved my bacon. My new tankless started throwing error code 10 when I had AirBnB guest in my barndo on a Saturday. T This video did the trick. One suggestion. The back of Your head is in the way of the camera at the start.

Nice video instructions. I have not installed my tankless yet, but I do wonder about the openings in the vent. Im thinking about placing some kind of window screen material over the vent opening to help keep the bugs out. Rinnai should have made the fan a little more accessible knowing this could happen.

After I cleaned out the fan, then I started getting an error code 10. I took it back apart, and I discovered that I didn’t properly seat the rubber boot to the fan. So there was an air leak . I properly seated the boot, and then it seems to run just fine now. The first time I took the squirrel cage off, the mistake I made is I didn’t seat the fan properly back in, there’s a small slot, that a tab fits into when it is properly seated. So there was a gap in the back, when I turned on the hot water too much, it would let out a big WHOOMP! So make sure that the fan is properly seated also. So in my experience, I had to make sure of two things on the fan, that it is properly seated, and the rubber boot that attaches to the fan is also properly seated. The last thing I did was peeked into the exhaust/intake on top. I should’ve done this the second to the last, however, when I did, they were dead yellow jackets on top of the piece of metal with small holes in it, and also a dead yellow jacket, on what looked like a heater core. so I blew them out with an airline, I might have to remove the fan and check for debris pretty soon. Runs great now, I got an error code 10 after I cleaned the fan. However, insects will plug up the intake along the way, so it’s a good idea to back blow it also from the bottom. Runs great now, good luck.

Thank you for your video, it is really helpful. However the water still cold during the shower after clean the fan. When I turn on the water, it comes hot water during the beginning, but turns to cold, and error code 10 comes again. May I ask what can I do after clean the fan? Thanks again!

Had the Code 10 on mine, found your video, and did what you did. Problem solved! Thank you!!!

Mr. Smith, Great video, you saved me $650 + tax service. To work on this. The water heater is back in business like a new one. I only want to know where we can find this fan as a backup as the fins on mine seem rusty due to a long time of 8+ years. Thanks, Model DR-8535-812D Above this it says u287-360-cw-2

Thank you so much for this! I fixed it myself!

This worked! Thanks for posting!

Good video! May want to be wearing safety glasses while using compressed air. Thanks for sharing!

Thanks for taking the time to make this video. Much appreciated!

Dude, PLEASE move the camera closer, and don't put yourself directly in the line of sight.

We have the same unit and it's been nothing but problems. We had a bad main board which took a bunch of sensors with it; then sensors started dying one by one after it was replaced (each one causing us to lose hot water until turning it off and back on again). Now we are getting Error 10, so it makes me believe there has always been a blockage and it's been overheating; or the blower is dying (The one thing they haven't replaced yet aside from the other motorized parts and valves)..

Thank you!!

I wasted $300 on a pro plumber who did nothing. This took me 30 minutes to pull out 4 moths and problem solved. Thanks for making this video!

Thank you. I dropped one of those screws that held the fan on and couldn't find it. I don't have any idea how to find a match for it at Walmart. What should I do? Would hate to call the plumber now that I cleaned out all those pesky moths! Oh! I have one more question. Is there a way to safely clean out all the debris that's just sitting inside the Rinnai housing? I've had it for 11 years, so quite a bit has accumulated. Is it a fire hazard or no big deal? Thanks again. I really appreciate you very much! SO helpful and informative!

Thank you your video was easy and precise. The hardest part was putting the screws back in.

Fabulous. Concise. Can only imagine what might have cost to have resolved professionally.

For those with the R94LS where the fan in sideways - I found another video showing how to remove the fan. - czcams.com/video/AHC2KlNj0GI/video.html

Thank you for making this video. Rinnai should have this in the manual. I was quoted $400 for a service call and a 6 week wait time. After watching the video it took me 15 minutes and I had about 25 moths in the fan cage. Once removed the problem was solved and the unit is much more quiet when it runs.

Lifesaver! The water heater tech had no idea how to fix it. We watched your video and got it done! We have hot water! 😊🎈

I watched both of your videos and attempted to fix the problem. I thought to myself "I really hope I have bugs in my fan" . . . This way I would be able to fix it. Your video saved me big $$$$$. I was able to pull out the fan and voila! A crusted on honey bee AND a lot of dust was all over the fan. I scraped off the honey bee and took a toothbrush and cleaned the fins of the fan. HELPFUL TIP #1: The plastic connector on the fan is difficult to pull apart. I decided to leave it connected. I saw another video (someone else) where they broke the tabs on it. TIP#2. Use a Sharpie to write 1, 2 and 3 on the three connectors TIP #3 Use a Sharpie and draw an up arrow on the fan before you remove it. There is only one way put it back on, but this makes it a little bit easier.

Thank you sir for this Video!

thanks!! similar fix needed for my rc98; a few small differences to get fan out but easy to figure out with a bit of patience. Used a dry tooth brush to clean fan